carbon dioxide emissions and governance a nonparametric analysis for the g 20 this paper applies nonparametric estimators to examine countries carbon dioxide co2 emissions and governance relationship by using data for the time period 1996 2010 of the twenty largest economies group of twenty g 20 the dynamics of the considered relationship are analyzed six governance measures are included in our analysis voice and accountability political stability and absence of violence government effectiveness regulatory quality rule of law and control of corruption as have been defined in world governance indicators from the world bank the empirical findings reveal a nonmonotonic relationship between countries co2 emissions and the examined governance measures in addition and with respect to the environmental policy makers a significant difference on the number of governance measures influencing countries carbon dioxide emissions which is subject to countries specific regional and development variations is recorded finally the carbon dioxide emissions governance relationship is highly nonlinear and appears that countries higher governance quality does not always result to lower carbon dioxide emission levels

watchdogs of the invisible hand ngo monitoring and industry equilibrium globalization has been accompanied by rising pressure from advocacy non governmental organizations ngos on multinational firms to act in socially responsible manner we analyze how ngo pressure interacts with industry structure using a simple model of ngo firm interaction embedded in an industry environment with endogenous markups and entry we explain three key empirical patterns in developing country industries under activist pressure the degree of exit under more intense activist pressure the differential response of industries to ngo activism and the general rise of ngo activism following globalization

growth deforestation and the efficiency of the redd mechanism this paper assesses the long term impacts of an international transfer called the reduced emissions from deforestation and degradation redd mechanism which aims at preserving tropical forests of the recipient economy this two sector economy faces a dilemma between economic growth and deforestation the rural sector can substitute reproducible capital for agricultural land whereas the manufacturing sector only requires capital the model shows that the redd mechanism has a non monotonic effect on steady state welfares for low transfer schemes the agricultural output increases with the transfer even though less land is under cultivation for high transfer schemes the increase in the transfer may not offset the decrease in the agricultural output the open loop symmetric nash equilibrium in a dynamic deforestation game predicts that redistributing the transfer among a finite number of producers is less efficient in reducing deforestation than in the social optimum

agricultural household models extensions applications and policy this book presents the basic model of an agricultural household that underlies most of the case studies undertaken so far the model assumes that households are price takers and is therefore recursive the decisions modeled include those affecting production and the demand for inputs and those affecting consumption and the supply of labor comparative results on selected elasticities are presented for a number of economies the empirical significance of the approach is demonstrated in a comparison of models that treat production and consumption decisions separately and those in which the decisionmaking process is recursive the book summarizes the implications of agricultural pricing policy for the welfare of farm households marketed surplus the demand for nonagricultural goods and services the rural labor market budget revenues and foreign exchange earnings in addition it is shown that the basic model can be extended in order to explore the effects of government policy on crop composition nutritional status health saving and investment and to provide a more comprehensive analysis of the effects on budget revenues and foreign exchange earnings methodological topics primarily the data requirements of the basic model and its extensions along with aggregation market interaction uncertainty and market imperfections are discussed the most important methodological issues the question of the recursive property of these models is also discussed

estimating temptation and commitment over the life cycle this paper estimates the importance of temptation gul and pesendorfer 2001 for consumption smoothing and asset accumulation in a structural life cycle model we use two complementary estimation strategies rst we estimate the euler equation of this model and second we match liquid and illiquid wealth accumulation using the method of simulated moments we nd that the utility cost of temptation is one quarter of the utility bene t of consumption further we show that allowing for temptation is crucial for correctly estimating the elasticity of intertemporal substitution estimates of the eis are substantially higher than without temptation finally our method of simulated moments estimation is able to match well the life cycle accumulation pro les for both liquid and illiquid wealth only if temptation is part of the preference speci cation our ndings on the importance of temptation are robust to the di erent estimation strategies revised july 2020

tenure security human capital and soil conservation in an overlapping generation rural economy we develop an overlapping generation model of rural agricultural households to examine whether tenure security and subsistence needs influence the choice between unexploited topsoil and investment in children s human capital as the mode of transfer of wealth a unique dataset from bangladesh finds that tenure security is associated with greater topsoil conservation and lower human capital investment therefore there exists a tradeoff between these two modes of transfer we suggest that increased public expenditure on schooling which substitutes private expenditure may lower the pressure on land and soil resources

agricultural expansion and deforestation modelling the impact of population market forces and property rights abstract this paper compares four different modelling approaches to agricultural expansion and deforestation and explores the implications of assumptions about the household objectives the labour market and the property rights regime a major distinction is made between population and market based explanations many of the popular policy prescriptions are based on the population approach assuming subsistence behaviour and limited market integration within a more realistic particularly for the long term effects market approach well intentioned policies such as agricultural intensification programmes may boost deforestation many forest frontier contexts are also characterized by forest clearing giving farmers land rights deforestation becomes an investment to the farmer and a title establishment strategy land titling and credit programmes may therefore increase deforestation

environmental degradation in developing countries households and the reverse environmental kuznets curve abstract we propose an alternative explanation for the inverted u shape relationship between income and environmental degradation in developing countries production and consumption patterns of rural households are the main cause of environmental damage with a conventional household model we demonstrate that the so called environmental kuznets curve may arise when the restrictive assumption of a set of perfect markets for factors and commodities is relaxed depending on the criterion or indicator that is used to represent environmental pressure however we demonstrate that the reverse may also hold this finding highlights the importance of selecting the appropriate dependent variable in regression analyses

economic growth and environmental degradation the environmental kuznets curve and sustainable development abstract in this paper we critically examine the concept of the environmental kuznets curve ekc it proposes that there is an inverted u shape relation between environmental degradation and income per capita so that eventually growth reduces the environmental impact of economic activity the concept is dependent on a model of the economy in which there is no feedback from the quality of the environment to production possibilities and in which trade has a neutral effect on environmental degradation the actual violation of these assumptions gives rise to fundamental problems in estimating the parameters of an ekc the paper identifies other econometric problems with estimates of the ekc and reviews a number of empirical studies the inference from some such ekc estimates that further development will reduce environmental degradation is dependent on the assumption that world per capita income is normally distributed when in fact median income is far below mean income we carry out simulations combining ekc estimates from the literature with world bank forecasts for economic growth for individual countries aggregating over countries to derive the global impact within the horizon of the bank s forecast 2025 global emissions of so 2 continue to increase forest loss stabilizes before the end of the period but tropical deforestation continues at a constant rate throughout the period

is there an environmental kuznets curve for deforestation abstract this paper examines the relationship between deforestation and gross domestic product gdp per capita in particular whether an inverted u relationship indicative of worsening then improving deforestation exists between them we note that previous work has used models with restrictive assumptions and recommend a more flexible random coefficients specification which allows for a greater degree of cross country heterogeneity empirical results using data for 76 developing countries between 1961 1992 suggest that the inverted u shaped relationship observed in other studies does not appear to be an empirical regularity with our less restrictive specification statistical tests indicate that this specification is supported by the data we argue that such results are not surprising in view of the wide diversity of physical and social characteristics that exist across countries

the interaction of population growth and environmental quality an important question for policy is whether holding constant per capita income and other relevant factors population pressures have a significant effect upon environmental degradation the authors examine the effect of population pressures upon deforestation in 64 developing countries in an attempt to provide relevant empirical findings data on deforestation were drawn from the food and agriculture organizations production yearbook results suggest that a relationship exists between per capita income and deforestation and that for africa rural population density shifts the relationship upward the increase in the rate of deforestation levels off as income increases the rate of growth in per capita income also has a significant negative impact upon deforestation although the magnitude of the effect is small the authors close in stressing that reducing the rate of population growth is not necessarily the best way to reduce the rate of deforestation deforestation in developing countries is really a problem of market failure since property rights are often neither defined nor enforced there is essentially no private cost of deforestation with no long term stake in the land people have no incentive to use land efficiently this situation must be addressed in conjunction with the problems of poverty and population growth

optimal soil conservation and the reform of agricultural pricing policies abstract soil degradation is often blamed for the poor performance of agriculture in developing economies so too are policies which keep the prices of both outputs and inputs artificially low some economists have argued that pricing reforms will encourage soil depletion others say that such reforms will encourage soil conservation to evaluate these claims this paper develops models of the optimal control of soil erosion and soil fertility it is shown that the effect could go either way but that there are strong reasons for suspecting that pricing reforms will not affect soil conservation dramatically

peasant household behaviour with missing markets some paradoxes explained a model of peasant household behavior under varying degrees of household specific food and labor market failures is constructed to show that these structural features can explain several well known patterns of peasant response which have often been attributed to peculiar motives presumed specific to peasants the model explains sluggish response to cash crops prices and high instability in perceived food and labor scarcities the key role of manufactured consumer goods prices in stimulating peasants effort in cash crops production the effectiveness of taxation as opposed to incentives in stimulating cash crops production and the key role of technological change in food production to enhance cash crop production results are obtained analytically in the case of one market failure and by numerical simulation with more than one

are there increasing returns to pollution abatement empirical analytics of the environmental kuznets curve in pesticides abstract according to the environmental kuznets curve ekc hypothesis economic growth and the reduction of environmental degradation are compatible goals an inverted u shaped relationship between economic performance and environmental pollution suggests that empirically an economy is associated with smaller levels of pollution after some threshold income point one potential explanation for the empirical evidence of an ekc is increasing returns to pollution abatement where the abatement efficiency rises with an increase in the scale of abatement doubling the clean up efforts more than doubles the abatement of pollution as this efficiency gain makes abatement less expensive pollution might fall as more abatement is undertaken this study tests the hypothesis that there are increasing returns to abating pollution empirical evidence on environmental risks in the us agricultural sector since 1970 support the existence of increasing returns in addition i estimate the productivity of pollution abatement using refined empirical productivity measurement methods and explicitly control the level of technology the results show the importance of including an environmental productivity variable in the ekc framework

are there limits to growth a simple theoretical model of pollution is developed that generates an inverted u shape relationship between per capita income and environmental quality this model is then used to study long run growth the same inverted u shape is shown to appear in time series and the prospects for sustained growth are shown to hinge on whether increasingly strict environmental regulation is compatible with a constant rate of return on capital implementation is also studied tax and voucher schemes are shown to have an advantage over direct regulation because they provide the correct incentives for capital accumulation copyright 1998 by economics department of the university of pennsylvania and the osaka university institute of social and economic research association

agricultural intensification common property resources and the farm household this paper evaluates the impact of agricultural price and intensification policies for common property resources and welfare of rural communities in developing countries in doing so we develop a new model for the farm household that has analytical advantages over the traditional one and that has significant potential for empirical application the major findings are technical assistance that increase productivity of land intensive agricultural outputs cereals livestock etc cause degradation of the communal resources and may cause immiserization policies that increase the prices of these goods cause identical effects by contrast similar policies applied to labor intensive outputs vegetables tubers etc contribute to improve the common resources and to increase the welfare of the rural communities

economic growth and co2 emissions in malaysia a cointegration analysis of the environmental kuznets curve this paper attempts to establish a long run as well as causal relationship between economic growth and carbon dioxide co2 emissions for malaysia using data for the years from 1980 to 2009 the environmental kuznets curve ekc hypothesis was tested utilizing the auto regressive distributed lag ardl methodology the empirical results suggest the existence of a long run relationship between per capita co2 emissions and real per capita gross domestic product gdp when the co2 emissions level is the dependent variable we found an inverted u shape relationship between co2 emissions and gdp in both short and long run thus supporting the ekc hypothesis the granger causality test based on the vector error correction model vecm presents an absence of causality between co2 emissions and economic growth in the short run while demonstrating uni directional causality from economic growth to co2 emissions in the long run

a note on soil depth failing markets and agricultural pricing abstract due to implementation of structural adjustment programs prices of agricultural products have increased in many developing countries from an environmental point of view it is an open question whether these price increases stimulate sustainable agriculture in the context of a simple model that includes labour intensive investments in soil conservation it is demonstrated that rising prices for agricultural outputs unambiguously increase soil conservation in the steady state with imperfect labour markets the reverse effect may occur giving rise to a conflict between agricultural reform programs and soil conservation

a model of shifting cultivation can soil conservation reduce deforestation shifting cultivators manage soil not only by adjusting soil use on already cleared lands as in continuous cultivation but also by clearing forests to obtain new fertile soils this study examines the crucial link between on farm soil conservation and deforestation in shifting cultivation by modeling forest clearing as an investment in soil for a private farmer more generally by doing so the study attempts to integrate deforestation and soil conservation models which have been separately developed in the literature our policy goal is to arrest tropical deforestation as destruction of global commons caused by land degradation in shifting cultivation while improving the well being of poor shifting cultivators our integrated approach enables joint policy analyses of deforestation and land degradation three welfare enhancing policies are considered the first is agricultural and nonagricultural subsidies affecting farm and nonfarm income opportunities the second is fiscal and tenure policies affecting discount rates our question is whether the link between forest clearing and soil fertility alters the outcomes of these two standard macroeconomic policies commonly found in the literature the third policy or program is various soil conservation measures affecting soil regeneration and erosivity on already cleared lands this article examines a very important question which has received little attention in previous theoretical works can soil conservation reduce deforestation this study confirms anti deforestation effects of the promotion of nonfarming activities a common and often emphasized finding in previous works among shifting cultivators more importantly it also demonstrates that improving various soil conservation measures not only discourages forest clearing among shifting cultivators but also tends to have greater effects on forest protection than promoting nonfarming activities contrarily agricultural price subsidy or technological progress gives rise to the opposite outcome and lowering the farmer s discount rate or improving tenure security encourages him her to clear more forests just to accumulate soil