CO2 emissions embodied in China-US trade: Input-output analysis based on the emergy/dollar ratio
CO2 emissions embodied in China-US trade: Input-output analysis based on the emergy/dollar ratio
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DOI：
10.1016/j.enpol.2011.06.060
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发表时间：
2011-10-01
期刊：
影响因子：
9
通讯作者：
Wang, Yuan
中科院分区：
文献类型：
--
作者：
Du, Huibin;Guo, Jianghong;Wang, Yuan
为了解中美贸易中隐含的CO2排放变化，采用基于能值/美元比率的投入产出分析方法估算了2002-2007年中国对美出口隐含的CO2排放量，采用结构分解分析方法分析了中国对美出口隐含的CO2排放量变化的驱动因素。投入产出分析结果表明，2002 - 2005年净出口CO2排放量增长较快，2005 - 2007年净出口CO2排放量呈下降趋势。这些趋势是由于CO2总排放强度的降低、汇率的下降以及少量的隐含CO2排放。SDA的结果表明，出口总量是2002-2007年期间隐含CO2排放量增加的最大驱动因素，其次是中间投入结构。直接CO2排放强度对隐含CO2排放量的变化有负面影响。研究结果表明，中国应建立排放责任分配框架，提高能源效率，改善中间投入结构。(C)2011爱思唯尔有限公司保留所有权利。
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 CO(2)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 CO(2)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. (C) 2011 Elsevier Ltd. All rights reserved.