multi region input output analysis of co2 emissions embodied in trade the feedback effects energy related co2 emissions embodied in international trade have been widely studied by researchers using the environmental input output framework despite the increasing interest in using the multi regional input output mrio model by researchers few studies have looked into the mechanism of feedback effects we introduce a method called the stepwise distribution of emissions embodied in trade swd eet to reveal how the emissions embodied in trade are absorbed by a country s final demands through a series of allocation steps a country s indirect absorption patterns and its indirect trade balance of emissions from bilateral trade with other countries are also studied based on the proposed method an empirical study using the data of asian economies shows significant differences in the consumption based emission estimates for some economies due to feedback effects through international trade the differences can be largely captured by the first step or the first two steps of the adjustment procedure in the swd eet analysis other findings and some recommendations are also presented

a multi regional input output analysis of the pollution haven hypothesis from the perspective of global production fragmentation pollution haven hypothesis is an important debate on the environmental effects of international trade the pattern of which has been reshaped obviously by global production fragmentation recently the production process is distributed globally and the pollution haven effect of international trade is becoming more complicated for instance intermediate product trade corresponds to the largest share of embodied emissions and the share of emissions induced by the global value chain related trade is increasing gradually the aim of this paper is to make a comprehensive analysis on the pollution haven hypothesis in carbon emissions embodied in three different trade patterns from global bilateral and national perspectives we propose a method to parcel the pollution haven hypothesis in a multi regional input output analysis and discuss the contribution of production fragmentation for global emissions it is found that international production fragmentation generates global emissions savings the intermediate product trade has a negative balance of avoided emissions the final product trade becomes increasingly less environmentally effective during the period 1995 2009 there are significant differences in the environmental effects of different trade patterns for each country

co2 emissions embodied in china s exports from 2002 to 2008 a structural decomposition analysis abstract this study examines the annual co2 emissions embodied in china s exports from 2002 to 2008 using environmental input output analysis four driving forces including emission intensity economic production structure export composition and total export volume are compared for their contributions to the increase of embodied co2 emissions using a structural decomposition analysis sda technique although offset by the decrease in emission intensity the increase of embodied co2 emissions was driven by changes of the other three factors in particular the change of the export composition was the largest driver primarily due to the increasing fraction of metal products in china s total export relevant policy implications and future research directions are discussed at the end of the paper

china s balance of emissions embodied in trade approaches to measurement and allocating international responsibility international trade is characterized not only by the flow of capital and goods but also by the energy and emissions embodied in goods during their production this paper investigates the evolving role that chinese trade is playing in the response to climate change by estimating the scale of emissions embodied in china s current trade pattern and demonstrating the magnitude of the difference between the emissions it produces some of which are incurred to meet the consumption demands of the rest of the world and the emissions embodied in the goods it consumes estimating china s emissions on a consumption rather than a production basis both lowers its responsibility for carbon dioxide co2 emissions in 2006 from 5 500 to 3 840mtco2 and reduces the growth rate of emissions from an average of 12 5 per cent p a to 8 7 per cent p a between 2001 and 2006 the analysis indicates that a reliable consumption based accounting methodology is feasible and could improve our understanding of which actors and states are responsible for emissions for example recent emissions reductions by developed countries may lack credibility if production has merely been displaced to countries such as china moreover in the current institutional context production methodologies encourage leakages through trade that may do more to displace than to reduce emissions both equity and efficiency concerns therefore suggest that emissions embodied in trade should receive special attention in the distribution of post kyoto abatement burdens

examining the global environmental impact of regional consumption activities part 2 review of input output models for the assessment of environmental impacts embodied in trade this paper offers a detailed review of recently described single and multi region input output models used to assess environmental impacts of internationally traded goods and services it is the second part of a two part contribution in part 1 turner k lenzen m wiedmann t and barrett j in press examining the global environmental impact of regional consumption activities part 1 a technical note on combining input output and ecological footprint analysis ecological economics we describe how to enumerate the resource and pollution content of inter regional and inter national trade flows with the aim to illustrate an ideal accounting and modelling framework for the estimation of ecological footprints a large number of such environment economic models have been described but only in the last few years models have emerged that use a more sophisticated multi region multi sector input output framework this has been made possible through improvements in data availability and quality as well as computability we identify six major models that employ multi sector multi region input output analysis in order to calculate environmental impacts embodied in international trade results from the reviewed studies demonstrate that it is important to explicitly consider the production recipe land and energy use as well as emissions in a multi region multi sector and multi directional trade model with global coverage and detailed sector disaggregation only then reliable figures for indicators of impacts embodied in trade such as the ecological footprint can be derived

an analysis of the driving forces of co2 emissions embodied in japan china trade abstract by using the latest china japan input output data sets and the index decomposition analysis ida approach this article analyzes the driving forces of co2 emissions embodied in trade between the two countries during 1990 2000 we found that the growth of trade volume had a large influence on the increase of co2 emissions embodiments in bilateral trade the dramatic decline in carbon intensity of the chinese economy is a primary cause in offsetting co2 emissions exported from china to japan over 1995 2000 we argue that a better understanding of the factors affecting co2 emissions embodied in international trade will assist in seeking more effective climate policies with wider participation in the post kyoto regime

emissions embodied in chinese exports taking into account the special export structure of china abstract quantification of co 2 emissions embodied in china s trade is important for an informed debate on whom to blame for the recent rise in chinese emissions or the calculation of border carbon adjustments applying input output io techniques we calculate these emissions in 1 a standard model 2 a regionally disaggregated model taking into account that export production is concentrated in more advanced and more emission efficient provinces and 3 in a model with export processing taking into account that almost half of the chinese exports rely on a large share of imported intermediates and little domestic value and emissions added we compare year 2007 emissions embodied in chinese exports in a unified framework we also report emissions embodied in chinese imports used for intermediate production of exports by combining calculations for china with data from global io models we find that both a model with 30 provinces 1730 mt co 2 and a model accounting for export processing 1630 mt yield lower chinese emissions embodied in exports compared to the standard model 1782 mt in the regional model emissions are even lower 1522 mt if interprovincial trade is not taken into account

from production based to consumption based national emission inventories abstract under the united national framework convention of climate change unfccc countries are required to submit national emission inventories nei to benchmark reductions in greenhouse gas ghg emissions depending on the definition and system boundary of the nei the mitigation options and priorities may vary the territorial system boundary used by the unfccc has been critiqued for not including international transportation and potentially causing carbon leakage to address these issues past literature has argued in favour of using consumption based nei in climate policy this article discusses several issues in moving from the standard production based nei to consumption based nei first two distinct accounting approaches for constructing consumption based nei are presented the approaches differ in the allocation of intermediate consumption of imported products second a consistent method of weighting production based and consumption based nei is discussed this is an extension of the previous literature on shared responsibility to nei third due to increased uncertainty and a wide system boundary it may be difficult to implement consumption based nei directly into climate policy several alternative options for incorporating consumption based inventories into climate policy are discussed

embodied carbon in china s foreign trade an online sci e and ssci based literature review abstract this paper systematically presents a survey of the empirical literature studying the embodied co2 emissions in china s foreign trade ecct based on the bibliometric method and the online version of science citation index expanded sci e and social sciences citation index ssci this study summarizes the latest publications regarding ecct in peer reviewed journals in terms of quantities most productive countries institutions authors citations and disciplines by using synthetic analysis of keyword frequency this study reveals the most popular methodologies applied in measuring ecct discusses the variation of numerical results in the literature and reasons and countermeasures for the results uncertainties continuous investigation of the literature releases the methodology employed for measuring ecct becoming more reasonable and the results more critical however the numerical results of ecct are of great discrepancies within given year by different considerations on methodology specification accounting principles and data sources and processing for instance the estimates of co2 embodied in china s exports changed from 478 mt to over 3000 mt and those of in china s imports ranged from 140 mt to over 1700 mt in 2007 therefore overcoming data inherent limitations and reducing discrepancies among available databases should be urgently considered the results imply that the prospective research tendencies on ecct are to 1 improve china s regional input output data and energy intensity data to more precise estimates under global perspective 2 estimate china s carbon emission at firm level by different firm ownerships in production and consumption worldwide 3 assess china s carbon emission from processing or non processing trade by compiling more detailed multi regional input output table 4 evaluate city level carbon mitigation capacity in china under global mrio model 5 explore new carbon management experience in china s carbon trading market and new trade expansion policy of one belt and one road in her new growth era

ghg emissions embodied in macao s internal energy consumption and external trade driving forces via decomposition analysis abstract as a member of the kyoto protocol macao faces the enormous challenge to tackle with energy conservation and greenhouse gas ghg emission reduction though many studies have been devoted to understanding macao s ghg emissions from energy consumption and external trade an investigation of the underlying driving forces is still absent therefore this study decomposed the energy related emissions change and imbalance in embodied emissions of external trade during 2000 2011 respectively by using the logarithmic mean divisia index lmdi method the economic scale effect and energy structure change were identified as the main driving factors of macao s increasing energy related emissions while trade structure and embodied emission intensity contributed to make macao a net importer of embodied emissions however some variations can be seen during the period concerned then the underlying reasons for the two decomposition results were further investigated on account of the results and analysis instructive policy implications can be put forward for macao to better proceed with energy conservation and emissions reduction

input output analysis of carbon emissions embodied in china japan trade abstractenergy related co2 emissions embodied in international trade have been widely studied by researchers all over the world by using the bilateral trade input output btio approach this study investigates the co2 emissions embodied in china japan trade during 1995 2009 and attempts to identify the driving forces for the change in co2 emissions embodied in china s exports to japan during that period by using structural decomposition analysis sda result shows that co2 emissions embodied in china s exports increased by about 100 from 1995 to 2009 whereas those embodied in china s imports increased by about 500 during the same period result of this research also reveals that the scale effect had a large influence on the increase in co2 emissions embodied in china japan trade the technical effect greatly decreased co2 emissions embodied in china s exports to japan but obviously increased those embodied in imports the influence of the structural effect was relatively small and insignificant in

a review of recent multi region input output models used for consumption based emission and resource accounting abstract the interest in consumption based emission and resource accounting has grown significantly many studies juxtapose consumer emissions carbon footprint and producer territorial emissions of greenhouse gases in order to demonstrate the effects of trade on the national emission budget to this end a respectable number of studies have been undertaken worldwide in order to estimate emissions embedded in international trade of numerous countries and world regions input output approaches and increasingly multi region input output mrio models are commonly chosen as they provide an appropriate methodological framework for complete carbon footprint estimates at the national and supra national level with increasing processing capabilities of computers and a wider availability of economic accounts environmental accounts and trade data such models are now being implemented on a wide scale after a brief overview of salient single region input output studies i provide an in depth review of the most recent multi region input output models used for the purpose of consumption based environmental accounting the main methodological features and important results are described for around twenty studies covering the years 2007 to 2009 this is followed by a detailed review of studies dealing with uncertainty in mrio analysis an area which has not received a lot of attention so far i conclude that further research is mainly needed in two areas a improvements in data availability and quality and b improvements in the accuracy of mrio modelling

will economic restructuring in china reduce trade embodied co2 emissions we acknowledge the support of the national social science foundation of china project no project no 09 zd029 and the institute for energy environment and economy at tsinghua university which is supporting tianyu qi s doctoral research as a visiting scholar at the massachusetts institute of technology we further acknowledge the support of eni s p a icf international and shell international ltd initial sponsors of the china energy and climate project in the mit joint program on the science and policy of global change at mit none of the sponsoring organizations played a role in the study design collection analysis or interpretation of the data used for this study nor did they influence our decisions to submit the article for publication and all errors are our own we also acknowledge general industrial and government sponsors of the joint program on the science and policy of global change http globalchange mit edu sponsors all

embodied energy and intensity in china s normal and processing exports and their driving forces 2005 2015 abstract international trade has important impacts on a country s energy consumption this paper first uses the time series 2005 2015 extended input output database to study china s embodied energy and intensity in both normal and processing exports structural decomposition analysis sda is then applied to analyze the driving forces behind the embodiment changes the empirical results show that china s energy embodied in both normal and processing exports first increased in 2005 2008 dropped in 2009 due to the global financial crisis and then rose again after 2009 and finally dropped in 2014 2015 the embodied energy in trade as a percentage of total energy consumption in china was relatively stable before and after the global financial crisis at around 28 over the 2005 2008 period and 22 over the 2009 2015 period the contribution of the aggregate embodied intensity aei of exports to china s aggregate energy intensity dropped from 30 in 2005 to 21 in 2015 among china s trading partners the united states japan and korea together accounted for around half of china s embodied energy and aei in exports in 2005 but their shares dropped to only one third in 2015 energy efficiency improvement played the key role in reducing the embodied energy and intensity in china s exports similar analysis can be applied to other regions and indicators

china s provincial co2 emissions embodied in international and interprovincial trade trades create a mechanism of embodied co2 emissions transfer among regions causing distortion on the total emissions as the world s second largest economy china has a large scale of trade which results in the serious problem of embodied co2 emissions transfer this paper analyzes the characteristics of china s co2 emissions embodied in international and interprovincial trade from the provincial perspective the multi regional input output model is used to clarify provincial co2 emissions from geographical and sectoral dimensions including 30 provinces and 28 sectors two calculating principles production accounting principle and consumption accounting principle munksgaard and pedersen 2001 are applied the results show that for international trade the eastern area accounts for a large proportion in china s embodied co2 emissions the sectors as net exporters and importers of embodied co2 emissions belong to labor intensive and energy intensive industries respectively for interprovincial trade the net transfer of embodied co2 emissions is from the eastern area to the central area and energy intensive industries are the main contributors with the largest amount of direct co2 emissions the eastern area plays an important role in co2 emissions reduction the central and western areas need supportive policies to avoid the transfer of industries with high emissions

the global co2 emissions growth after international crisis and the role of international trade in this paper we decompose the driving forces of global co2 emissions for the post crisis era 2008 2011 from both production based and consumption based aspects the results suggest that non oecd economies have become the major drivers for the rapid global growth of co2 emissions after the crisis more specifically the increasing consumption and investment of non oecd economies as well as stagnation of their emission intensity reductions have largely contributed to global growth of co2 emissions after 2009 on the contrary oecd economies have a less carbon intensive life style coupled with a decrease in investment and stagnation of consumption the oecd economies have successfully reduced both their production based and consumption based emissions however the magnitude of their reduction is much lower than the increase led by non oecd economies in addition both oecd and non oecd economies have started to increase their purchases of intermediate and final products from non oecd economies such changes of international trade caused an additional 673 mt of global emissions from 2008 to 2011 the results of our decomposition provide both worries about and insights into future global climate change mitigation

border flow rights and contracts for differences of differences models for electric transmission property rights in this paper a property rights model for electric transmission is proposed and its properties analyzed the proposed rights called border flow rights support financial hedging of transmission risk and merchant transmission expansion through associated financial rights called contracts for differences of differences these financial rights allow for forward trading of both energy and transmission by a unified exchange avoiding the bifurcation in current markets between decentralized long term energy trading and centralized long term transmission trading such long term trading can help to support the financing of both generation and transmission assets we consider incentive properties of such a right in the absence of lumpiness economies of scale and market power

economic gains and environmental costs from china s exports regional inequality and trade heterogeneity abstract as the world s factory processing exports comprise a remarkable share of china s total exports by fully taking the special characteristics of processing trade into account this paper comprehensively investigates the unbalanced distribution of trade related economic benefits and environmental costs across different regions in the years of 2007 and 2012 we find a serious regional mismatch between trade related pollutions and economic gains with the coastal region gaining more economically but emitting less whereas the inland regions gain less but emit more we also conclude that trade related value added and air pollutions would be overestimated significantly if trade heterogeneity was not correctly captured processing exports are cleaner but result in greater regional inequality in terms of trade related economic gains and environmental costs although the regional inequality induced by processing exports presented a decreasing trend over the period 2007 2012 the electricity generation sector plays a dominant role in this outcome coastal regions should transfer more trade related economic gains to help sustainable development in inland regions

promises and pitfalls in environmentally extended input output analysis for china a survey of the literature abstract as the world s largest developing economy china plays a key role in global climate change and other environmental impacts of international concern environmentally extended input output analysis ee ioa is an important and insightful tool seeing widespread use in studying large scale environmental impacts in china calculating and analyzing greenhouse gas emissions carbon and water footprints pollution and embodied energy this paper surveys the published articles regarding ee ioa for china in peer reviewed journals and provides a comprehensive and quantitative overview of the body of literature examining the research impact environmental issues addressed and data utilized the paper further includes a discussion of the shortcomings in official chinese data and of the potential means to move beyond its inherent limitations

the responsibility for carbon emissions and carbon efficiency at the sectoral level evidence from china this work reviews benefit based principles to measuring responsibility for carbon emissions at the sectoral level using environmental input output analysis several new emissions multipliers are proposed to measure sectoral carbon efficiency these principles are used in an empirical analysis of carbon emissions in china and differences between the principles are compared the results indicate that all principles considered can prevent double counting of emissions but that different principles may lead to significantly different attributions of responsibility for carbon emissions and to different multiplier values for particular sectors electricity and heat supply is found to be the sector with the highest emissions responsibility under all but the consumer responsibility principle as well as the highest carbon multiplier under all principles however this sector s responsibility under producer responsibility principles is greater than that under other principles basic metals and transportation and post and telecommunication are among the top five sectors with the greatest responsibilities under all but the consumer responsibility principle whereas construction has the highest consumer responsibility among all sectors the pros and cons and policy implications of each principle are also discussed

input output analysis of co2 emissions embodied in trade and the driving forces processing and normal exports in recent years energy related co2 emissions embodied in international trade and the driving forces have been widely studied by researchers using the environmental input output framework most previous studies however do not differentiate different input structures in manufacturing processing exports and normal exports using china as an example this paper exemplifies how implications of results obtained using different export assumptions differ the study posits that the utilization of traditional i o model results in an overestimation of emissions embodied in processing exports and an underestimation in normal exports the estimate of co2 emissions embodied in china s exports drops by 32 when the extended i o model is used the choice of export assumption has more impact on the decomposition results for processing exports the study further highlights that for a country with an export structure similar to china it is meaningful to look into the impact of export assumption in embodied emission studies

economic gains and environmental losses from international trade a decomposition of pollution intensity in china s value added trade abstract based on a multi regional input output model this study explores the temporal changes and driving forces of china s environmental losses relative to its economic gains from international trade with each of its 45 trading partners from 1995 to 2015 we find that china suffered larger environment losses per us value added through exports than almost all of its trading partners over time the environmental losses paid by china declined quicker than that of its bilateral trading partners the decomposition results of our research further show that the technology effect played a dominant role in this decline moreover the phenomenon that developed economies have outsourced dirty intermediate production stages to emerging economies via trade in intermediate goods has led to the emerging economies suffering greater environmental losses over time for certain economic gains from international trade

firm ownership china s export related emissions and the responsibility issue abstract china s co 2 emissions and those embodied in its exports have been extensively studied one often neglected aspect is the prevalence of foreign invested enterprises fies in china s exports for which a substantial portion of benefits return to the investing countries in this paper we revisit china s export related co 2 emission responsibilities by viewing them from a new gross national income perspective using a recently developed environmental input output framework one which distinguishes firms by ownership and trade mode we find that china s co 2 emissions responsibility for each yuan of national income from fie exports is actually higher than that attributable to chinese owned enterprise coe exports the result has a somewhat surprising implication it suggests another source of conflict between china s and global interest in reducing co 2 emissions from a purely chinese as opposed to global standpoint a higher share of exports by coes rather than fies is favorable even though coes emit more co 2 when producing each unit of exports this finding should sound an additional warning to those who still think that global climate change mitigation can be effectively pursued by allocating country by country emissions responsibility

the effects of direct trade within china on regional and national co2 emissions curbing national carbon emissions and clarifying regional carbon reduction responsibility are two challenges faced by china both of which are influenced by interregional trade to exclude the influence of trade balance this paper proposes a methodology to parcel the pollution haven hypothesis into a multi regional input output model applies it to a longer time gap which is made up of two representative periods of chinese economy 1997 2002 and 2002 2007 and clarifies the provincial and sectoral contributions to national emissions we find that 1 embodied co2 emissions first remain relatively stable and then increase sharply for the two periods and the changing trends are mainly determined by the decreasing carbon intensity and the expanding trade scale respectively 2 with the secondary industry as the main contributor regional carbon spillover is mainly concentrated in the coastal provinces but it contributes to an increase of co2 emissions in the central and western regions 3 the coastal and inland provinces contribute to the increase of national carbon emissions through interregional imports and exports respectively but the pollution haven hypothesis is not obvious and is only observed in 2002

upgrading or downgrading china s regional carbon emission intensity evolution and its determinants one of china s major national targets is to environmentally upgrade its economy in this paper we define environmental upgrading as lowering the carbon intensity the disparities among china s regions suggest to examine china s carbon emission performance at the regional level for this purpose we use inter regional input output tables for 2002 2007 and 2012 that distinguish processing exports from ordinary exports the regional emission intensities eis show environmental downgrading in the period 2002 2007 and upgrading during 2007 2012 to identify the determinants of the evolution of regional eis we have employed a multiplicative structural decomposition analysis changes in direct emission coefficients and changes in production technology are found to be the major determinants however next to these standard determinants we also evaluate the effects on the changes in regional eis of changes in inter regional trade and changes in inter regional spillovers changing inter regional trade is found to have increased the ei significantly in western and central regions this suggests that more dirty production was shifted from coastal to inland regions our study yields clear policy recommendations for achieving china s transformation to a low carbon economy c 2020 elsevier b v all rights reserved

driving factors of carbon embodied in china s provincial exports in this paper we use the multi regional input output model mrio and logarithm mean divisia index approach to analyze the changes in china s carbon embodied in exports cee at the national and provincial levels the results indicate that the total cee and the cee of 17 provinces including all eastern provinces decreased between 2007 and 2010 the largest decrease in total cee is caused by an input structural effect which decreases the cee of most of the provinces the technique effect arising from changes in provincial carbon intensities causes the second largest decrease in total cee and it effectively reduces the cee of most of the provinces especially the eastern provinces changes in the export composition of most of the provinces also decrease the provincial cee a change in the provincial distribution of exports decreases the cee in 11 provinces on the one hand and increases the cee in 19 provinces on the other hand a change in export volume increases the cee of each province and the whole country but its total effect is evidently lower than the input structural effect and the technique effect c 2015 elsevier b v all rights reserved

input output analysis of co2 emissions embodied in trade competitive versus non competitive imports energy related co2 emissions embodied in international trade have been widely studied by researchers using the environmental input output framework in the literature two different approaches to deal with emissions embodied in a country s imports can be found one of the approaches is based on the assumption of competitive imports while the other is based on the assumption of non competitive imports we show that the implications of the results obtained using different imports assumptions are not the same the approach using the competitive imports assumption gives estimates larger than those obtained using the non competitive import assumption the differences between the two embodiment estimates come from the transition of embodied emissions in china s imports for intermediate consumption to those in china s exports this explains why relatively high estimates of co2 emissions embodied in china s exports are reported in several recent studies appearing in energy policy

co2 emissions per value added in exports of china a comparison with usa based on generalized logarithmic mean divisia index decomposition abstract this study first analyzes co 2 emissions per value added epv in exports of china during 1995 2009 and compares it with that of usa second a generalized logarithmic mean divisia index glmdi method is proposed to decompose the epv gaps between china and usa into five effects this method generalizes existing lmdi methods and makes the multiplicative decomposition of a sum of several terms possible then attribution analysis on value added coefficient effect is conducted results show that aggregate epv of china s exports is 4 20 mt billion us dollars in 1995 which decreases to 2 48 in 2009 for usa it is 0 66 0 33 respectively epv of china s exports is several times greater than that of usa at sectoral level industrial sectors and transport sectors are top sectors with large epv in china s exports which corresponds to the case of usa epv gaps of the service sectors between china and usa have become increasingly prominent since 2000 decomposition results show that emission coefficients value added coefficients and input output structure are the main driving factors of the expanding epv gaps between china and usa attribution analysis on value added coefficient effect the fastest growing effect shows that electrical and optical sector has been the largest contributor to epv gaps between china and usa resulting from value added coefficient effect since 1998 and its effect sharply increases during 1995 2009 policy implications derived are finally discussed

input output analysis of co2 emissions embodied in trade the effects of sector aggregation abstract energy related co2 emissions embodied in international trade have been widely studied by researchers using the environmental input output analysis framework it is well known that both sector aggregation and spatial aggregation affect the results obtained in such studies with regard to the latter past studies are often conducted at the national level irrespective of country or economy size for a large economy with the needed data studies may be conducted at different levels of spatial aggregation we examine this problem analytically by extending the work of su et al su b huang h c ang b w zhou p 2010 input output analysis of co2 emissions embodied in trade the effects of sector aggregation energy economics 32 1 166 175 on sector aggregation we present a numerical example using the data of china and by dividing the country into eight regions it is found that the results are highly dependent on spatial aggregation our study shows that for a large country like china it is meaningful to look into the effect of spatial aggregation

china s emissions embodied in exports how regional and trade heterogeneity matter abstract trade facilitates the shifts of emissions from one place to another although studies have shown that regionally disaggregated model and model that distinguishes processing exports at national level are necessary to estimate the embodied emissions in china s exports no study evaluates this issue by simultaneously taking both regional and trade heterogeneity into account to fill this gap we re estimate the co2 emissions embodied in china s exports at both regional and industrial level by using the newly developed inter regional input output iriop model that distinguishes processing trade from other trade at regional level results show that comparing to the iriop model the traditional multi regional input output mrio model has overestimated the environmental loss from exports by 14 25 in 2002 and 7 20 in 2012 for different regions the largest bias is found in regions and industries with the highest processing export shares therefore the iriop model gives more accurate accounting on the regional environmental loss due to national exports and thus is important for establishing effective emission mitigation policies

china s foreign trade and climate change a case study of co2 emissions abstract the globalization of trade has numerous environmental implications trade creates a mechanism for consumers to shift environmental pollution associated with their consumption to other countries carbon leakage exerts great influences on international trade and economy applying an input output approach the paper estimates the amount of carbon dioxide co2 embodied in china s foreign trade during 1997 2007 it is found that 10 03 26 54 of china s annual co2 emissions are produced during the manufacture of export goods destined for foreign consumers while the co2 emissions embodied in china s imports accounted for only 4 40 1997 and 9 05 2007 of that we also estimate that the rest of world avoided emitting 150 18 mt co2 in 1997 increasing to 593 mt in 2007 as a result of importing goods from china rather than manufacturing the same type and quantity of goods domestically during 1997 2007 the net additional global co2 emissions resulting from china s exports were 4894 mt then the paper divides the trade embodied emissions into scale composition and technical effect it was found that scale and composition effect increased the co2 emissions embodied in trade while the technical effect offset a small part of them finally its mechanism and policy implications are presented

the effect of trade between china and the uk on national and global carbon dioxide emissions we estimate the amount of carbon dioxide embodied in bi lateral trade between the uk and china in 2004 developing and applying the method of shui and harriss 2006 tile role of co2 embodiment in us china trade energy policy 34 4063 4068 the most recently available data on trade and co2 emissions have been updated and adjusted to calculate the co2 emissions embodied in the commodities traded between china and the uk it was found that through trade with china the uk reduced its co2 emissions by approximately 11 in 2004 compared with a non trade scenario in which the same type and volume of goods are produced in the uk in addition due to the greater carbon intensity and relatively less efficient production processes of chinese industry china uk trade resulted in an additional 117 mt of co2 to global co2 emissions in the same one year period compared with a non trade scenario in which the same type and volume of goods are produced in the uk this represents an additional 19 to the reported national co2 emissions of the uk 555 mt y in 2004 and 0 4 of global emissions these findings suggest that through international trade very significant environmental impacts can be shifted front one country to another and that international trade can but does not necessarily result in globally increased greenhouse gas emissions these results are additional to the environmental consequences of transporting goods which are not robustly quantified here c 2008 elsevier ltd all rights reserved

multiplicative structural decomposition analysis of aggregate embodied energy and emission intensities abstract aggregate intensity indicators such as the ratio of a country s energy and emissions to its gdp are often used by researchers and policymakers to study energy and environmental performance this paper analyzes the relationship between energy or emissions and value added or gdp from a different viewpoint namely from the demand rather than the production perspective using the input output i o framework the aggregate embodied intensity aei defined as the ratio of embodied energy or emissions to embodied value added can be defined at the aggregate final demand category and sectoral levels the total aggregate intensity can be presented as a weighted sum of the aeis at the final demand category or sectoral level changes of the aei at different levels can be decomposed to identify the driving forces using multiplicative sda a study using the latest 2007 and 2012 datasets of china indicates that a its aggregate intensity of co 2 emissions was mainly determined by the aei in investment and b the emission intensity effect generally contributed the most to the aei ratio changes at different levels the proposed framework can be applied to other aggregate intensity indicators and extended to multi country region analysis

information technology and efficient pricing providing a competitive edge for electric utilities abstract electricity has traditionally been generated and sold as a homogeneous commodity with a single price this practice has less to do with the nature of electricity than with the lack of technology to distinguish among each kilwatthour based on what and when it is used this article argues that with the recent advances in information and communication technologies the time has arrived to market electricity as something other than a homogeneous commodity by pricing electricity according to its time of use for example electricity will be more efficiently utilized benefitting both the customers and the electric companies

revisiting drivers of energy intensity in china during 1997 2007 a structural decomposition analysis the decline of china s energy intensity slowed since 2000 during 2002 2005 it actually increased reversing the long term trend therefore it is important to identify drivers of the fluctuation of energy intensity we use input output structural decomposition analysis to investigate the contributions of changes in energy mix sectoral energy efficiency production structure final demand structure and final demand category composition to china s energy intensity fluctuation during 1997 2007 we include household energy consumption in the study by closing the input output model with respect to households results show that sectoral energy efficiency improvements contribute the most to the energy intensity decline during 1997 2007 the increase in china s energy intensity during 2002 2007 is instead explained by changes in final demand composition and production structure changes in final demand composition are mainly due to increasing share of exports while changes in production structure mainly arise from the shift of chinese economy to more energy intensive industries changes in energy mix and final demand structure contribute little to china s energy intensity fluctuation from the consumption perspective growing exports of energy intensive products and increasing infrastructure demands explain the majority of energy intensity increase during 2002 2007

recalculating co2 emissions from the perspective of value added trade an input output analysis of china s trade data abstract using traditional trade statistics to calculate co 2 emissions embodied in international trade results in significant miscalculations and a deeper divide between countries the aim of this research is to provide a reasonable estimate of carbon emissions to help policymakers in each country address their actual share of responsibility this study employs the world input output database and the gross export decomposition methodology to recount the co 2 emissions embodied in china s international trade from the perspective of value added trade the result shows that reliance on traditional statistics caused a significant overestimation of china s imports and exports us 398 77 billion and us 504 46 billion for china s imports and exports respectively our findings suggest that 177 24 million tons of carbon emissions embodied in imports and 907 636 million tons of carbon emission embodied in exports were over calculated the result obtained with traditional calculation methods has artificially increased the responsibility share of china in the global emissions reduction we also compare the co 2 emission coefficients of china with those of other countries our findings suggest that the high emission coefficients of most chinese industrial sectors determine the carbon emissions embodied in china s exports to be higher than in its imports

input output and structural decomposition analysis of singapore s carbon emissions singapore is an island city state it lacks conventional energy resources and is alternative energy disadvantaged in the past decade 2000 2010 its energy related carbon emissions increased from 37 8 to 44 4 million tonnes of co2 this paper analyses the city state s carbon emissions from the demand perspective using the input output i o method and investigate the drivers of emission changes using structural decomposition analysis sda it is the first comprehensive analysis of singapore s emissions using the i o framework the results obtained show that exports accounted for nearly two thirds of its total emissions and growth in its emissions in the last decade was largely export driven emissions increased as export oriented industries and export volume expanded fuel switching and energy efficiency however helped to lower growth in emissions besides exports household related emissions accounted for about a quarter of singapore s total emissions the emissions related to different household groups remained fairly stable as increases in embodied indirect emissions were offset by decreases in direct emissions the high income household group registered the largest increase in direct emissions while the middle income household group registered the largest increase in embodied emissions the policy implications of our findings are discussed

bi lateral co2 emissions embodied in australia china trade abstract this paper quantifies the co 2 emissions embodied in bi lateral trade between australia and china using a sectoral input output model the results revealed 1 that china performs lower than australia in clean technology in the primary manufacturing energy sectors due to their overuse of coal and inefficient sectoral production processes and 2 that china had a 30 94 mt surplus of bi lateral co 2 emissions in 2010 2011 and 3 overall global emissions were reduced by 20 19 mt through australia china trade in 2010 2011 the result indicates that the greater the energy efficient a country among the trading partners the lower will be the overall global co 2 emissions global emissions decreased mainly because china consumed australian primary products rather than producing them australia is an energy efficient producer of primary products relative to china the bilateral trade compositions and trade volume played an important role in lowering global emissions and therefore one can view proposed china australia free trade agreement positively in reducing global emissions however for the sustainable development china should strengthen clean energy use and both countries should adopt measures to create an emission trading scheme in order to avoid protectionism in the form of future border price adjustments

co2 emissions embodied in china us trade input output analysis based on the emergy dollar ratio to gain insight into changes in co2 emissions embodied in china us trade an input output analysis based on the emergy dollar ratio edr is used to estimate embodied co2 emissions a structural decomposition analysis sda is employed to analyze the driving factors for changes in co2 emissions embodied in china s exports to the us during 2002 2007 the results of the input output analysis show that net export of co2 emissions increased quickly from 2002 to 2005 but decreased from 2005 to 2007 these trends are due to a reduction in total co2 emission intensity a decrease in the exchange rate and small imports of embodied co2 emissions the results of the sda demonstrate that total export volume was the largest driving factor for the increase in embodied co2 emissions during 2002 2007 followed by intermediate input structure direct co2 emissions intensity had a negative effect on changes in embodied co2 emissions the results suggest that china should establish a framework for allocating emission responsibilities enhance energy efficiency and improve intermediate input structure

impact of inter sectoral trade on national and global co2 emissions an empirical analysis of china and us abstract this paper attempts to discuss the co2 emissions embodied in sino us international trade using a sector approach based on an input output model established in this study we quantify the impact of sino us international trade on national and global co2 emissions our initial findings reveal that in 2005 the us reduced 190 13 mt co2 emissions through the consumption of imported goods from china while increasing global co2 emissions by about 515 25 mt similarly china reduced 178 62 mt co2 emissions through the consumption of us goods while reducing global co2 emissions by 129 93 mt sino us international trade increased global co2 emissions by 385 32 mt as a whole of which the chemical fabricated metal products non metallic mineral products and transportation equipment sectors contributed an 86 71 share therefore we suggest that accelerating the adjustment of china s trade structure and export of us advanced technologies and experience related to clean production and energy efficiency to china as the way to reduce the negative impact of sino us trade on national and global co2 emissions this behavior should take into account the processing and manufacturing industries as a priority especially the chemical fabricated metal products non metallic mineral products and transportation equipment sectors

the role of co2 embodiment in us china trade abstract this study examines the influence of us china trade on national and global emissions of carbon dioxide co2 the three basic questions are as follows 1 what amount of co2 emissions is avoided in the us by importing chinese goods 2 how much are co2 emissions in china increased as a result of the production of goods for export to the us and 3 what are the impacts of us china trade on global co2 emissions our initial findings reveal that during 1997 2003 1 us co2 emissions would have increased from 3 to 6 if the goods imported from china had been produced in the us 2 about 7 14 of china s current co2 emissions were a result of producing exports for us consumers and 3 us china trade has increased global co2 emissions by an estimated 720 million metric tons we suggest that the export of us technologies and expertise related to clean production and energy efficiency to china could be a win win strategy for both countries for reducing their trade imbalance and mitigating global co2 emissions improved international accounting methodologies for assigning responsibility for co2 emissions must be designed to account for the dynamic nature of international trade

the embodied energy in trade what role does specialization play abstract many industrialized countries are net importers of embodied energy and emissions while many developing countries are net exporters we examine the role of specialization in driving these trade patterns by conducting a spatial index decomposition analysis on the embodied energy in net exports for 41 economies the results reveal that industrialized countries have generally offshored energy intensive production which many developing countries specialize in we find that specialization on average makes the biggest contribution accounting for roughly 50 of a country s embodied energy in net exports however other factors namely energy intensity and the trade balance combine to make an equally important contribution in summary specialization despite its significant role is not the only cause of the embodied energy trade patterns observed between industrialized and developing countries