natural resource accounting there is as yet no consensus on the most appropriate way to incorporate the degradation of environmental capital into national income accounting procedure net product is currently derived by deducting from gross product the depreciation of man made capital only deducting depreciation of natural capital in a similar manner will give a figure for true net product that provides a better indicator of that level of current income which is sustainable into the future the user cost and net price methods of calculating the value of natural resource depreciation are analysed and assessed on the basis of this assessment the net price method is then used to adjust the national accounts of zimbabwe for depletion of forests soils and mineral resources for the period 1980 to 1989 the results suggest that economic depreciation of natural resources represents approximately 2 of annual gdp although this is regarded as a significant underestimate the implications for integrating natural resource depletion into policy making within the current national political climate are then addressed

sustainability policy and environmental policy a theoretical representative agent economy with a depletable resource stock polluting emissions and productive capital is used to contrast environmental policy which internalises externalised environmental values with sustainability policy which achieves some form of intergenerational equity the obvious environmental policy comprises an emissions tax and a resource stock subsidy each equal to the respective external cost or benefit sustainability policy comprises an incentive affecting the choice between consumption and investment and can be a consumption tax capital subsidy or investment subsidy or a combination thereof environmental policy can reduce the strength of the sustainability policy needed more specialised results are derived in a small open economy with no environmental effects on utility

natural resources national income and economic growth in africa abstract because standard measures of aggregate income such as gross domestic product gdp do not account for natural resource depletion their use as gauges of economic performance tends to exaggerate the benefits of resource extraction accounting for natural resource depletion in 18 african countries indicates different patterns of growth than those suggested by gdp figures use of the revised measures in analyses of the link between exports and growth suggests that export expansion may generate increases in measured gdp without stimulating increased production in contrast real exchange rate alignment is correlated with growth in both conventional gdp and the revised accounts

progress along the path evolving issues in the measurement of genuine saving more than 10 years since a practical linkage between sustainable development and a measure of national wealth expanded to include natural and environmental resources was first posited the empirical estimation of adjusted net savings dubbed genuine saving has evolved considerably in this paper we take stock of both progress achieved and the challenges that remain we begin by recalling the key points made in pearce and atkinson 1993 ecol econ 8 103 which presented the first cross country estimates of savings rates adjusted to reflect depletion and degradation of the environment we then briefly summarise the evolution of the theoretical argument linking savings and sustainability however the main focus of this paper is an aspect that concerned david pearce greatly namely the evolution of the measurement of genuine savings we identify and consider the empirical evidence with regard to two particular measurement issues the valuation of exhaustible resources and environmental degradation common to the both issues are concerns about measuring changes in national wealth in real world economies

welfare equivalent nnp under distributional objectives abstract this note concerns social accounting when there are social objectives for the distribution of utility across consumers the most important result is that a suboptimal distribution across agents causes the net national product to fail as a welfare measure

a critical assessment of measures of central bank independence the methodology of measuring central bank independence suggested by bade and parkin three decades ago and inverse correlations between the measures and inflation have been widely accepted the measurement literature has made important contributions identifying elements of institutional design that establish the relationship between the central bank and the government and the measurements from an ordinal perspective provide some useful insights about the major institutional redesigns of central banks during the past several decades at the same time the measurement literature is problematic first a dummy variable bifurcating central banks into groups of independent and less independent central banks can duplicate the standard correlations suggesting the information content of the specific measures is limited second the correlations between inflation and measures of independence are not as stable as claimed and most important the measurements are subject to classification problems that have not been fully appreciated review of the institutional design and history of the bank of korea bank of japan and the federal reserve provide evidence the classification problems are important the measures of independence are more appropriately regarded as ordinal rankings of central bank independence rather than considered cardinal measures suitable for econometric modeling jel e50 e58 e65

the concept of natural capital the natural environment is now commonly viewed as a form of capital asset or natural capital also included are ecosystems that provide important goods and services to the economy managing natural capital has consequences for sustainable development however there are contrasting weak versus strong sustainability views which in turn have implications for green accounting natural resource based sovereign wealth funds have emerged as key financial instruments for compensating resource depreciation with greater economy wide investments recent scientific evidence recommends demarcating safe operating spaces to limit exploitation of critical global biophysical subsystems or processes these challenges suggest that the concept of natural capital is pivotal to sound policy

ecologically sustainable development and project appraisal in developing countries abstract this article examines how the concept of ecological sustainability may affect project appraisal for developing countries it is argued that three criteria should be applied viz efficiency equity and ecological sustainability operationalization of the sustainability criterion requires that policy makers set targets for natural resource use moreover they need to address new trade offs for instance between short term income objectives efficiency and long term environmental objectives sustainability the new issues raised by the sustainability criterion require a review of the applicability of project appraisal methods cost benefit analysis cba has been used most frequently but its usefulness in sustainability oriented project appraisal is shown to be limited despite some methodological problems multi criteria analysis mca should be regarded as an appropriate alternative or complementary appraisal tool mca does not require monetarization of effects nor does it exclusively focus on efficiency measurement these advantages apply particularly to developing countries where the data base is weak economic activities are directly dependent on natural resources and distribution concerns are strong mca may be applied to inter alia the estimation of scores on the sustainability criterion and to the integrated evaluation of scores on the three key criteria

national product related welfare measures in the presence of technological change externalities and uncertainty the purpose of this paper is to discuss under what conditions welfare can be measured by observables related to the national product or hamiltonian along the optimal trajectory under nonattributable technological or environmental change welfare will depend on time itself meaning that the hamiltonian along the optimal trajectory will be a biased measure of welfare this result will also hold if we make the time dependence of welfare endogenous by replacing technological change will externalities that are not internalized during optimization on the other hand if we take the externalities fully into account then the hamiltonian will represent the appropriate measure of welfare similar results also hold in the case of uncertainty where we show that a generalized hamiltonian provides a welfare measure and that the deterministic measures are special cases of their stochastic counterparts

linking economic and ecological models for a marine ecosystem increasingly economists and ecologists have begun to recognize the value to public policy of combining information and results from each discipline into multidisciplinary studies here we present a methodological approach that links economic and ecological analyses we develop an economic ecological model by merging an input output model of a coastal economy with a model of a marine food web we describe distinct linear system sub models of the economy and the ecosystem and we develop a method for linking the two our method extends the work of earlier researchers by incorporating an ecosystem matrix into resource multipliers and by showing how these multipliers may be calculated we present a numerical example for the new england region using coastal economic and marine ecological data from the region for a restricted set of industry sectors and food web trophic levels we calculate resource multipliers for the example and we simulate the economic impacts of changes in primary production in the ecosystem on final demands for fishery products the results illustrate the effects of incorporating the impacts of habitat destruction and ecosystem structure on resource multipliers our approach can be extended to incorporate the full range of sectors in the economy and trophic levels in a linked ecosystem 2003 elsevier b v all rights reserved

flows of air pollution ill health and welfare we provide a theoretical framework for measuring welfare when pollution influences economic growth by impairing health and driving up defensive medical expenditures we demonstrate the usefulness of our framework in practice by applying it to data from swedish valuation studies designed according to the accounting principles suggested here we estimate that the negative health effects of nitrogen dioxide emissions amount to 0 6 of gdp in sweden we also show that a corrective pigouvian tax should internalize the direct disutility reduced labor productivity and increased healthcare expenditures caused by pollution according to our calculations harmful health impacts alone excluding ecosystem effects justify 65 of the current swedish tax on nitrogen dioxide

sustainability and technical progress a rigorous model connects together the following three basic concepts 1 sustainability meaning the generalized future power of an economy to consume over time 2 green nnp meaning a current measure of national income that subtracts off from gnp not just depreciation of capital but also more generally depletion of environmental assets evaluated at current efficiency prices 3 technological progress meaning a projection onto the future of the so called solow residual a simple general formula is derived some crude calculations suggest a possibly strong effect of the residual which hints that our best present estimates of long term sustainability may be largely driven by predictions of future technological progress

environmental valuation to use or not to use a comparative study of the united states and europe valuation methods have been used for five main purposes in environmental decision making cost benefit analysis cba of projects cba of new regulations natural resource damage assessment environmental costing and environmental accounting the relatively lower importance attached to economic efficiency in environmental decision making in most european countries compared to the u s a both legally and in practice might account for our general finding that there are very few valuation studies in europe which have served as a decisive basis for environmental policy and regulations however with eu s goal to establish environmentally adjusted national accounts and to apply cba to environmental policy and regulations time seems ripe for an increased use of valuation techniques in europe

air pollution and green accounts a simple model treating air emissions as cumulative pollutants is used to derive measures of green net national product the model implies that pollution emissions are properly valued at their marginal social costs in the measurement of green nnp the level of genuine savings net savings less the value of resource depletion and pollution emissions is shown to provide a useful indicator of sustainable development recent figures on the social costs of fuel cycles are used to derive genuine savings measures for the uk and other european nations several countries had negative genuine savings during the 1980s

net national product as a welfare indicator the question of whether changes in net national product nnp will measure changes in welfare is investigated in this paper m weitzman 1976 demonstrated that under specific conditions nnp is proportional to discounted consumption the result requires nnp to be measured in current prices in utility units changes in real nnp measured using given prices from a base year will not represent a complete account of welfare changes copyright 1994 by the editors of the scandinavian journal of economics

social accounting and welfare measurement in a growth model with human capital this paper addresses social accounting and welfare measurement in an economy where human capital is an important factor in the economic system human capital accumulation depends on the time consumers spend in education however human capital is also a separate argument in the production function facing firms which gives rise to a production externality in a command optimum where the externality is internalized we show that an augmented nnp measure is the appropriate welfare indicator we also discuss the taxtransfer system required for the decentralized economy to reach a command optimum

a note on social accounting and unemployment abstract this note concerns the implications of unemployment for social accounting the main result is that unemployment invalidates the welfare interpretation of static indices related to the net national product

on the winner take all principle in innovation races what is the optimal allocation of prizes in an innovation race should the winner take all or is it preferable that the original inventor shares the market with subsequent independent duplicators some recent papers in law and economics have argued that the latter more permissive solution is socially preferable under mild conditions we re examine that issue arguing that a permissive regime may turn the innovation race into a waiting game reducing the power of incentives and may invite socially wasteful duplicative r d expenditures in a model that accounts for these effects the winner take all system turns out to be preferable in a broad set of circumstances especially in highly innovative industries jel k11 l1 o34

a renewable resource based ramsey model with costly resource extraction this paper derives the analytical solution of arenewable resource based ramsey economy withcostly resource extraction the goal is toascertain whether costly resource extractioncan induce nonlinear dynamical properties in the system we find that the solution for a model with constant technology can exhibit multiple steady states and the comparative statics effects for consumption utility and the stock of nature capital areambiguous in a number of different cases moreover thesolution for a model with exogenous technological progress exhibits unusual comparative dynamics andthe possibility of multiple balanced growthpaths an increase in the rate of technologicalprogress induces a long run growth rate in per capitaconsumption that depends on parameters of the productionfunction overall technological progress inthe model can be less beneficial than in the standardeconomic growth model in which resourceextraction is costless

on the intergenerational allocation of natural resources it is known hartwick and others that under standard assumptions a society that invests in reproducible capital the competitive rents on its current extraction of exhaustible resources will enjoy a consumption stream constant in time it is shown here that this result can be interpreted as saying that an appropriately defined stock of capital including the initial endowment of resources is being maintained intact and that consumption can be interpreted as the interest on that patrimony this seems like a useful rule of thumb for policy

sustainable development with extractive and non extractive use of the environment in production this paper considers an economy in which the environment plays a role both in welfare and production an endogenous growth model which allows for abatement activities is formulated in order to study the impact of pollution on welfare and long term growth conditions for optimal and balanced economic growth are discussed and a numerical example is given to provide some insight in the mechanisms at work in the model

valuing fisheries depreciation in natural resource accounting the pelagic fisheries in northeast peninsular malaysia in this paper an approach based onthe net present value method is used to account forthe changes in the value of fisheries resources changes in the value of fisheries resources can occurbetween successive years catch as well as betweencurrent and optimal levels of catch these changesneed to be accounted for in the national accountingsystem to reflect the true net national income thatis sustainable the approach outlined in this paper isdesirable as it allows the estimation of thedepreciation value of fisheries resource with limitedbiological information the application of theapproach to the pelagic fisheries in northeastpeninsular malaysia nepm showed that the resourcedepreciated in value over most years from 1982 to1993 these depreciations correspond to increasedfishing effort in addition pelagic catches in nepmfrom 1982 to 1993 were lower than the optimal levelsof catch due to overfishing thus policies aimed atreducing fishing effort can provide improvement inboth the potentially higher capital values of thefishery resource and the earning potentials of thefishing industry in nepm

macro economic analysis of forestry options on carbon sequestration in india the forestry sector provides a number of climate change mitigation options apart from this ecological benefit it has significant social and economic relevance implementation of forestry options requires large investments and sustained long term planning thus there is a need for a detailed analysis of forestry options to understand their implications on stock and flow of carbon required investments value of forest wealth contribution to gnp and livelihood demand management employment and foreign trade there is a need to evaluate the additional spending on forestry by analysing the environmental particularly carbon abatement social and economic benefits the biomass needs for india are expected to increase by two to three times by 2020 depending upon the forest types ownership patterns and land use patterns feasible forestry options are identified it is found among many supply options to be feasible to meet the demand based needs with a mix of management options species choices and organisational set up a comparative static framework is used to analyze the macro economic impacts forestry accounts for 1 84 of gnp in india it is characterized by significant forward industrial linkages and least backward linkage forestry generates about 36 million person years of employment annually india imports rs 15 billion worth of forest based materials annually implementation of the demand based forestry options can lead to a number of ecological economic and institutional changes the notable ones are enhancement of c stock from 9578 to 17 094 mt and a net annual c sequestration from 73 to 149 mt after accounting for all emissions a trebling of the output of forestry sector from rs 49 billion to rs 146 billion annually an increase in gdp contribution of forestry from rs 32 billion to rs 105 billion over a period of 35 years an increase in annual employment level by 23 million person years emergence of forestry as a net contributor of foreign exchange through trading of forestry products and an increase in economic value of forest capital stock by rs 7260 billion with a cost benefit analysis showing forestry as a profitable option implementation of forestry options calls for an understanding of current forest policies and barriers which are analyzed and a number of policy options are suggested c 1997 elsevier science b v

international trade and the sustainability footprint a practical criterion for its assessment a simple and minimal criterion for sustainability is that the value of natural capital plus manufactured capital be not decreasing on the basis of any individual country or region the above simple comparison may be misleading as it does not take account of the production of goods for consumption in other countries regions via international trade in other terms the full environmental footprint of a country may not be properly assessed a method of calculating a weak sustainability criterion has been established for both a closed economy approach and an open economy approach there are significant differences between the open and closed economies measures for several regions particularly the middle east overall global sustainability on this criterion has been positive and increasing using a difference equation approach a further analysis has been made of the average proportional rate of change of global sustainability between 1980 and 1990 and its various regional and structural components have been determined these indicate that most of global sustainability growth can be attributed to western europe other asia and japan particularly through high savings ratios the usa on the other hand has made a very small net contribution to the growth in global sustainability

an index of sustainable economic welfare isew for chile abstract chile has experienced a period of strong economic growth the gross domestic product gdp has doubled in the past 12 years however income inequality remains relatively the same as in the 1960s the economic growth is primarily attributed to the exports of natural resources which accounts for 80 of total exports however the gdp fails to account for the loss of natural capital and non marketed services the objective of this paper is to more clearly indicate the status of the chilean economy in terms of welfare using the index of sustainable economic welfare isew designed by daly and cobb 1989 the isew provides corrections to the gdp that includes income inequalities household labor and damage to natural capital this index has been applied in several case studies for developed countries in general the results show that isew runs parallel with gdp until the 1970s when a decline in welfare occurs due to a loss in natural capital this study is the first attempt to utilize the isew for the purpose of analyzing whether or not similar trends exist for chile a developing country the isew for chile grew at a much slower annual rate over the past 30 years compared with gdp 0 16 vs 2 9 the chilean isew parallels the gdp until the 1980s a decline in the isew then occurs showing that chile is not on a sustainable path and that there is a strong link between economic growth and the depletion of natural resources

assessing sustainability a comprehensive wealth accounting prospect an application to mozambique we estimate the wealth of mozambique in 2000 and 2005 in order to assess the sustainability of its development path our methodology builds on arrow et al 2010 we show that mozambican wealth increases through human and physical capital accumulation while the pressure on natural capital remains low the growth of total factor productivity enhances the outcome of the different capital assets but population growth has a strong downward effect on wealth per capita results suggest that mozambican development was sustainable between 2000 and 2005 but these remain ambiguous and are highly sensitive to data and assumptions used

simulated exchange values and ecosystem accounting theory and application to free access recreation abstract this paper discusses the simulated exchange value method a practical method to estimate values for goods and services currently outside of the market in a manner consistent with the market based figures considered in national accounts the method proposes to simulate in a partial equilibrium context the price that would occur if a good or service outside of the market such as free access recreation in forests were internalized the method takes into account the demand estimated using non market valuation techniques the supply and the market structure the discussion covers the case of a linear demand and the case in which the demand is estimated using discrete choice methods this paper applies the method to free access recreation in the forests of andalusia in the south of spain and compares the results to those obtained using hicksian variations

valuing nature from environmental impacts to natural capital abstract economic valuation of natural and environmental assets is now a well established practice economic analysis provides several methods for discovering the impact on social welfare associated with changes in the ability of these assets to provide different goods and services in general terms these valuation exercises have been performed in the framework of environmental impact assessment or more generally cost benefit analysis there is however an increasing demand nowadays to go beyond this framework and to value natural capital natural resource stocks land and ecosystems as such there are two main reasons for this new demand on the one hand sustainability requires that proper account should be taken of capital depreciation and therefore there is a need to value natural capital changes this valuation process nevertheless only makes sense when some kind of substitution between natural and other forms of capital is allowed on the other hand there is also an increasing tendency to demand that the stock of natural capital present in a given territory be valued either to discover one of the main components of social wealth or to help adequately plan changes in land use yet whereas conventional valuation methods are probably adequate to fulfill the first task this is less true in the case of the second while even more difficulties arise in connection with the third one even if at first sight the process appears conceptually identical these tasks are of a different order of magnitude as the experience of both the world bank and the statistics division of the united nations in this respect clearly shows

aggregate estimate of environmental degradation for zimbabwe does sustainable national income ensure sustainability abstract standard measures of economic growth do not adequately reflect changes in aggregate welfare over time sustainable national income is therefore defined as net national product with adjustments for the degradation of renewable and non renewable capital productivity loss rather than replacement cost is the most theoretically correct way to value resource depletion modified net product is estimated for the agriculture and forestry sectors of zimbabwe by valuing the loss of forest stock and soil erosion the results show that traditional measures overstate the value of the agricultural sector s product by approximately 10 in 1989 it is argued that indicators of sustainable national income do not ensure sustainable development as with all macroeconomic indicators they do not account for distributional and equity issues which are at the crux of sustainable development nor do they point to mechanisms that would ensure sustainable resource management rising sustainable income over time is therefore a necessary but not sufficient condition for the achievement of sustainable development

accounting for india s forest wealth in this paper we account for forest wealth in india changes in the timber and carbon wealth embodied in these forests are related to important green national accounting aggregates such as genuine saving and the change in wealth per capita important accounting issues include the timing of carbon releases that occur when forests are disturbed as well as the valuation of these releases our empirical findings suggest that while india s forest wealth is substantial net changes in this wealth are arguably not so large at least in relation to gnp however when viewed in the context of the wealth diluting effects of population growth this implies a far larger additional savings effort is required to cover the net loss in forest values than otherwise appears to be the case finally we examine ways in which the accounting approach that we adopt can be reconciled with approaches which stress conserving forest wealth

net national product as an indicator of sustainability net national product nnp can potentially serve several objectives among others to measure value added and to be an indicator of welfare in the aftermath of the world commission on environment and development however it also seems important to investigate whether the concept of nnp can serve as an indicator of sustainability my point of departure following hicks 1946 ch 14 is therefore to require that nnp should measure what can be consumed in the present period without reducing future consumption possibilities and in line with this to argue that the nnp should equal the maximum per capita consumption level that can be sustained if sufficiently many facilitating assumptions are made then a concept of nnp that serves as an exact indicator of sustainability can easily be constructed for instance for a closed economy with a constant population a stationary technology and with only one capital good it follows that the present does not reduce future consumption possibilities if and only if it does not decrease the stock of the single capital good hence under the assumption that the one capital good k is identical to the one consumption good x nnp defined as y x k measures the maximal sustainable consumption at time t because then x y is equivalent to k the purpose of this note is to establish that with multiple capital goods it is not in general possible to construct an exact indicator of sustainability on the

opportunity cost of environmental conservation in the presence of externalities application to the farmed and wild salmon trade off in norway estimation of the opportunity cost is necessary for the economic assessment of environmental conservation policies this paper considers the case where an environmental good is negatively affected in the process of the production of marketable goods in the presence of externalities conservation implies the undertaking of abatement measures by polluters a relevant measure of opportunity cost in these settings is the abatement cost required to preserve or restore a unit of the environmental good in question current economic literature lacks an established methodology for deriving such measures as it commonly focuses on pricing pollutants rather than the natural stocks affected by them this paper uses a non optimal valuation approach suggested by fenichel and abbott jaere 1 1 2 1 27 2014 as a point of departure and develops a framework for deriving the opportunity cost of conservation as the cost of externality abatement per unit of environmental good an empirical illustration is provided for the case of the farmed and wild salmon trade off in norway in light of the current pollution control regulations

sustainable development the hartwick rule and optimal growth defining sustainable development as non declining utility the consistency of this concept with the hartwick rule and optimal growth is explored when resources are exhaustible a simple proof that a generalized hartwick rule is necessary and sufficient for constant consumption is derived the existence of a maximal constant consumption path is shown to depend critically on the elasticity of substitution if this is less than 1 consumption declines if it is greater than 1 then consumption is not maximal if it is equal to 1 the cobb douglas case then existence is proved consumption can increase along an optimal path if the pure rate of time preference is 0 if it is non zero then consumption declines

national accounts and environmental resources in the paper optimal growth theory is used to derive the appropriate definition of the net national product concept when there are environmental resources and environmental damage to take into account the basic conclusions are that conventional defined np should be corrected by deducting environmental damage and adding the value of the net change of all resources

re thinking economic progress the call for countries to pursue sustainable development and in doing so place the environment at the heart of policy making was established notably in the report of the brundtland commission in 1987 wced 1987 and at the earth summit meeting between world leaders in rio de janeiro in 1992 many national governments have now pledged a commitment to this goal and the transformation of these pledges into policy is a formidable challenge faced by decision makers it also raises fundamental questions regarding the design of indicators needed to construct suitable policy responses and furthermore to monitor progress towards stated goals allied to this is a feeling of dissatisfaction with the way in which economic progress is currently evaluated in particular this unease has found a focus in often trenchant criticism of the perceived emphasis of policymakers on changes in gross domestic product gdp this has led over the past decade to a view that unless the way in which progress is currently evaluated is changed or at least augmented commitments to sustainability or environmental goals will be largely meaningless of particular interest in this respect are proposals for the construction of green alternatives to gdp

on the welfare significance of national product under interest rate uncertainty abstract this paper examines the effects of uncertainty on the relationship between comprehensive nnp and sustainable equivalent consumption it is shown that the classical identity continues to hold in expectations when the discount factor is a stochastic diffusion process taking the form of geometric brownian motion with drift such a result may be useful as a point of departure for classifying the effects that various forms of uncertainty have on the welfare significance of national product

discount rates natural resources and the measurement of aggregate economic growth in africa abstract over the last decade there has been a growing interest in depreciation of natural capital in national income accounts within this literature there has been limited discussion of the sensitivity of measurement to the choice of discount rate and the effect of using depreciated measures of growth in empirical analyses without attempting to estimate or justify a specific discount rate this paper presents alternative sets of growth data for 18 african countries based on different assumptions of the appropriate discount rate to apply to natural capital the data sets are then used in a statistical test of the causes of economic growth results of the statistical analysis indicate sensitivity to the choice of discount rate

nonmarket benefits of nature what should be counted in green gdp abstract green gross domestic product green gdp is meant to account for nature s value on an equal footing with the market economy several problems bedevil green gdp however one is that nature does not come prepackaged in units like cars houses and bread even worse green gdp requires measurement of the benefits arising from public goods provided by nature for which there are no market indicators of value so what should green gdp count that is the subject of this paper ecological and economic theories are used to describe what should be counted and what should not if green gdp is to account for the nonmarket benefits of nature

the welfare economic theory of green national accounts this paper takes a critical look at the literature on green national accounts the problem studied is to find a linear index of economic variables that responds to perturbations in the same direction as social well being the thesis of a large literature that net national product which is a flow is that index in closed economies is shown in some interpretations to be simply false and in others to suffer from deep estimation problems it is argued that capital depreciation using shadow prices should certainly be included in national accounts but that the right welfare index is a comprehensive measure of wealth defined as the shadow value of an economy s stock of all capital assets it is shown that comprehensive wealth is usable as a criterion for policy evaluation as well as for determining sustainable economic development

towards an ecological economics of sustainability abstract persistent disagreement both as to the interpretation to be given to sustainability and as to the relation between ecological and economic sustainability has hindered the development of an ecological economics of sustainable resource use this paper identifies the main concepts of sustainability deriving from the two disciplines in order to explore the difference implied by an ecological approach to the problem it is argued that present economic and ecological approaches are largely disjoint and that they address basically different phenomena by combining the efficiency requirements of what is usually thought of as economic sustainability with the stability requirements of an ecological approach it is shown that an intertemporally efficient allocation of resources that satisfies the conditions for constant levels of consumption is not necessary to assure ecological sustainability ecological sustainability requires that the allocation of economic resources should not result in the instability of the economy environment system as a whole

adjusting green nnp to measure sustainability weitzman provides a foundation for nnp as the stationary equivalent of a wealth maximizing path when there is a constant interest rate and no exogenous technological progress here the implications of weitzman s foundation are explored in a case encountered in resource models i e the case of non constant interest rates in a setting that allows for exogenous technological progress an expression for nnp is obtained that adjusts green nnp for anticipated capital gains and interest rate effects to produce a measure that indicates sustainability this result is important when measuring the relative sustainability of resource rich and resource poor countries i introduction how should net national product nnp be adjusted for the depletion of natural and environmental resources a prerequisite for examining this problem is to decide on an underlying notion of income at the personal level hicks 1946 defines income as the consumption that if kept constant would yield the same present value as a person s actual future receipts since market prices are not influenced by any single person this notion of income equals a person s maximal sustainable consumption at the national level national income can likewise be defined as the consumption that if kept constant would yield the same present value as the actual future consumption path unless the nation is a small open economy faced with given international prices this notion of national income will exceed

wealth from optimal health abstract recently much research has been devoted to the question of how the conventional net national product measure should be augmented so as to cover changes in the stocks of natural resources this paper investigates the treatment of health capital and the risk of doomsday caused by pollution in such welfare measures our problem is not a standard optimal control problem because the survival probability depends on state variables we show how to handle this complication the resulting welfare measure is contrasted with the conventional net national product measure finally we address the matter of how to design a subsidy on health investment such that a market economy provides the optimal level of health

a contribution to the theory of welfare accounting a kind of unified theory is proposed as a dynamic generalization of the standard consumer surplus methodology for evaluating welfare changes the unified theory allows rigorous dynamic welfare comparisons to be inferred between any two economic situations from just knowing current incomes and observing a short run market demand schedule essentially the change in present discounted future utility is exactly captured by the formula difference in current income plus consumer surplus this well known formula is thereby shown to cover a far wider class of welfare comparisons than is customarily treated in the textbook static case

intertemporal valuation in an unpredictable environment abstract the inherent unpredictability of ecological systems is a vital feature for the development of theories at the interface between economics and ecology such unpredictability is caused by instabilities that are intrinsic parts of ecosystem function succession and evolution the complexity of ecological dynamics undermines the simple probabilistic treatment of uncertainty based on the equilibrium paradigm common in traditional environmental economics we investigate an important alternative by representing the dynamics of the biogeophysical system as an infinite sequence of instabilities this leads to a stochastic process exhibiting an exponentially growing variance our analysis is carried out in a macroeconomic setting in a situation where the value system here formalized in terms of risk averse social welfare functions contains at least two distinct aspects consumption rate and the state of the environment the central variables for intertemporal valuation i e the time dependent expected values of the two welfare function components are calculated using the probability distribution describing the environmental dynamics one result is that if the unpredictability of the environmental dynamics is taken into account then the social discount rate for environmental existence values may well be negative

incorporation of risk in regional forest resource accounts abstract to be an appropriate indicator of sustainability a net income measure projected into the future should consider risk several authors have demonstrated how risk can be formally incorporated into welfare measures like green net national product nnp however the resulting measure can be considerably more complex than its deterministic counterpart a practical alternative to formally incorporating risk is to use simulations of the type outlined in this paper to provide information about the expected impact of risk this information can be used to apply a stochastic version of a sustainability rule that requires that the expected value of net income be non declining this paper discusses the importance of risk and uncertainty to welfare measurement and more specifically the measurement of net income from forest services in a region of northern alberta two different approaches to valuing resource extraction are compared the depreciation approach and the wealth based approach provide very different projections of net income we demonstrate that when a renewable resource is subject to risk the wealth based approach provides a more appropriate measure of the influence of resource use on future consumption possibilities and the sustainability of net income

agriculture natural resources and environmental accounting in this paper we develop atheoretically consistent framework to incorporate theenvironmental effects of agricultural production andthe depletion of natural capital caused byagricultural production into the existing incomeaccounts we apply the framework and adjust theincome attributed to the agricultural sector andeconomy wide net national product nnp for the unitedstates estimated adjustments to the incomeattributed to agriculture are in the range of 4billion and have declined as a percentage of net farmincome since 1982

green accounting in imperfect market economies the idea of measuring the national welfare level by using the green nnp net national product has gained much attention lately this paper summarizes the research on social accounting in imperfect market economies by putting the results into a unified framework the main contribution of the paper is to relate the form of the national welfare measure to the functioning of the economic system and therefore to explicitly address the informational requirements implicit in social accounting

renewable resources and economic sustainability a dynamic analysis with heterogeneous time preferences abstract in recent years there has been increasing interest in the study of economic sustainability and its relationship with natural resources this paper attempts to shed some light on the issue by taking into account the individual variations in time preferences for consumption and resource amenity we characterize the long run steady state analyze its asymptotic stability and explore the transational dynamics from any initial state the welfare implications of the optimal path are also discussed

constant utility paths and irreversible global warming this paper shows that the hartwick rule for sustainable utility with depletable resources still applies to the case of the greenhouse effect from fossil fuel carbon emissions although a carbon tax is necessary for sustainable utility it is sufficient that the sum of net energy rents and carbon tax revenues is invested in reproducible capital examination of recent savings rates and energy cost shares suggests that this may be difficult to achieve with current global savings rates jel classification q32

a conceptual exploration and critical inquiry into the theoretical foundation s of economic welfare measures abstract economic welfare measures ewm such as the isew and the gpi are often argued to lack a sound theoretical foundation however we observe that the initial ewm were jointly inspired by hicksian and fisherian income welfare s experiential nature is fisherian inspired whereas seeing the consumption of community capital e g the ecosystem as a cost is hicksian inspired as most scholars do not recognize this double theoretical foundation two distinct welfare interpretations with different time and boundary dimensions are often conflated ewm can be seen as either capturing the benefits and costs experienced or as reflecting the benefits and costs of present economic activities bcpa the former interpretation excludes future costs costs shifted abroad and capital changes as they are not experienced in the present while the latter includes them recent developments reveal that ewm are converging toward the ex post established experiential fisherian foundation formulated by lawn 2003 yet this is not the only way forward as the bcpa view offers an alternative to account for for instance the costs of present activities shifted abroad or to the future whether they are experienced or not to avoid inconsistencies ewm s standardization would greatly benefit from making explicit in future studies which interpretation is taken

accounting for the wealth of nations the net versus gross output controversy and its ramifications there has been a longstanding controversy over the use of net versus gross measures of national product in accounting for economic growth most recently reflected in several papers which have examined the role of environmental variables it is argued in this paper that the two measures are not substitutes but complements which reveal different aspects of the growth process gross product is the correct output concept for estimating the structure of production while net product is the correct concept for measuring the welfare consequences of economic growth an alternative to the conventional solow growth accounting framework is then presented in which the change in national wealth is decomposed into its component elements copyright 1992 by the editors of the scandinavian journal of economics

national account of timber and forest environmental resources in sweden this paper outlines an extension of the national account of income from forest resources in sweden 1987 incorporating changes in timber inventories production of nonmarketed timber and nontimber goods and depletion or improvement in vital environmental stocks such as soil nutrients biodiversity and carbon sinks the total net value added provided by forest resources and forestry labour 1987 is estimated to 22 billions sek this is one third more than the contribution of forestry to ordinary gnp

an operative framework for total hicksian income measurement application to a multiple use forest a methodology for estimating total hicksian income in multiple use forests is presented the approach consistently incorporates commercial as well as non commercial economic values and enables the measurement of national accounting aggregates taking into account variation in man made and natural capital innovative solutions are developed i for the estimation of non market values such as recreation where an attempt to determine exchange values has been made simulating markets ii for timber where standing timber valuation methods have been extended to cover uneven stands and iii for carbon fixation valuation where only permanently fixed carbon after 1990 has been taken into account the methodology is applied to a multiple use pinewood in the guadarrama mountains near madrid spain timber cattle grazing hunting recreation carbon fixation and conservation values are measured and integrated in the accounting system using primary microeconomic data from the case study results indicate the importance of non commercial income which accounts for 51 of the total income and the social relevance of the analysed forest implying that only 31 of the total income generated is appropriated by the forest owner

spatial aggregation and the value of natural capital abstract location matters for the value of capital assets the value of changes in natural capital wealth can depend on whether natural capital asset prices are measured locally and then aggregated or whether average values are applied over aggregate representative areas spatial heterogeneity of resource characteristics and institutions impact approximations of the intertemporal welfare function and accounting price function because when spatial aggregation precedes valuation it implies greater arbitrage opportunities leading to more inelastic shadow accounting price functions than when valuation is done locally and then aggregated aggregation of observed values across varying resource and institutional characteristics can lead to omitted variables bias we illustrate these results in the context of groundwater in the kansas high plains aquifer and demonstrate that the accounting price function is less elastic when the accounting price is measured locally failure to measure locally and then aggregate could lead to undervaluing scarce resources and overvaluing plentiful ones which biases wealth accounts in favor of passing the non declining wealth sustainability test

wealth natural capital and sustainable development contrasting examples from botswana and namibia theoretical work has demonstrated that sustainable development requires non declining per capita wealth where wealth is defined to include produced natural human and social capital several studies have attempted to measure total national wealth or changes in wealth but have been seriously hampered by a lack of data especially for natural and human capital to address this problem the un and other international statistical agencies developed a standardized framework for environmental accounts the system of integrated environmental and economic accounts seea using the newly available asset accounts for natural capital national wealth accounts are constructed and used to assess the contrasting development paths of botswana and namibia botswana with an explicit policy of reinvestment of resource rents has roughly tripled per capita wealth and national income over the past two decades namibia with no explicit policy to use natural capita to build wealth has seen per capita wealth and income decline

capital gains and net national product in open economies it is shown within a given framework that with the world economy following an egalitarian path the aggregate capital gains being positive is equivalent to the interest rate tending to decrease this result is of importance for the concept of net national product in open economies in particular with positive aggregate capital gains an open economy cannot sustain consuming the return on its capital stocks since some part of the return must be used to augment the country s national wealth it is established that a country s share of world wide sustainable consumption equals its share of worldwide wealth

accounting for cultural heritage a theoretical and empirical exploration with focus on swedish reindeer husbandry the aim of this paper is to explore some of the theoretical and empirical aspects of an economy which includes cultural capital we use a simple dynamic growth model and the concept of a social acc

resource depletion and sustainability in small open economies abstract exogenous price changes affect the amount that a small country exporting natural resource commodities must invest to sustain its consumption level the necessary amount is given by the difference between hotelling rent and the discounted sum of future terms of trade effects capital gains the latter term is found to be large relative to the former in the case of petroleum depletion in indonesia this suggests that resource rich countries will need to invest more than previously expected to sustain their consumption levels if natural resource prices continue their long term historical decline

measuring the trade off between economic growth and a clean environment this article surveys various aspects of the measurement of environmental quality from the view point of national accounting and welfare economics it focuses on the question whether gnp or nnp should be corrected for environmental change green or eco gnp or whether physical accounts provide sufficient information for an assessment of the trade off mentioned above we conclude that valuation of services from environmental capital cannot be avoided for such assessment but can only be made using a model based approach statistical agencies should continue to collect data on environmental quality and to value changes in environmental capital in the context of national resource accounting however official statisticians should refrain from correcting gnp or nnp for environmental change as this correction implicitly contains a political judgment and cannot be based on mere technical knowledge

on the role of green taxes in social accounting this paper addresses social accounting numerically in a dynamic generalequilibrium model the main purposes are to study i whether emissiontaxes based on static willingness to pay information can be used to improvethe welfare level and ii whether these taxes provide close enoughapproximations of the correct pigouvian emission tax to be useful in thecontext of social accounting the results indicate that if environmentalquality is relatively linear with respect to pollution the approximation ofthe pigouvian emission tax will bring the economy close to the sociallyoptimal solution and at the same time provide a close approximation of thevalue of net investments in environmental capital

corruption and the political economy of resource based development a comparison of asia and sub saharan africa we model how the supply and demand for bribes affects resource use by an economy and the reinvestment of resource rents in other assets this requires adjusting the world bank s measure adjusted net savings for any rent dissipation due to corruption the impacts of corruption on long run changes and periodic growth in the adjusted net savings rate are estimated across african and asian economies from 1970 to 2003 corruption rather than resource dependency per se affects negatively the ability of african countries to reinvest resource rents in the short term but for asian countries corruption is less important than point resources corruption influences long run growth in adjusted net savings rates in all countries and is also the pathway through which this growth is affected by patterns of resource use trade and abundance

integrating the valuation of ecosystem services into the input output economics of an alpine region traditional economic accounting mostly ignores the benefits provided by nature and thus falls short in giving incentives for improving the way the economy uses natural resources in this study we develop a general framework for integrating the value of ecosystem services into an input output table in particular we integrate regionally valued ecosystem services on the supply side of an input output table to quantify what natural resources offer to economic development using several different indicators we show the benefits of the ecosystem services under the status quo and a scenario for regional development our results suggest that economic activities should be encouraged to use the ecosystem services more intensively while landscape development should aim at providing the required services we conclude that such an approach can provide a platform for decision makers to learn quantitatively about the dependency of the regional economy on natural services

choices and the value of natural capital sustainability requires maintaining opportunities for future generations so they can meet their needs opportunities are passed to future generations through a set of capital assets nature provides an important class of these assets but markets seldom reveal the marginal value of natural capital rather the marginal social worth or asset price must be imputed based on intertemporal exchange in the context of assessing whether intertemporal allocation rules lead to sustainable development appropriate asset prices must be based on the actual allocations and trade offs society makes therefore measuring economic programmes that enable the measurement of asset prices is an important empirical task we review the theory of measuring natural capital asset prices and discuss the key elements of measuring economic programmes that enable the measurement of natural capital asset prices we place the measurement of economic programmes and natural capital asset prices in the context of wealth based sustainability metrics