wAbstract
@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.
Keywords: Input-output analysis; Emergy/dollar ratio; Structural
decomposition analysisx
1. Introduction
2. Methods and data
@2.1. Input-output analysis
@2.2. CO2 emission intensity
@2.3. CO2 emission embodied in international
trade
@2.4. Structural decomposition analysis
@2.5. Data sources
3. Results and discussion
@3.1. Sector CO2 emission intensities
in China
@3.2. Total and sector CO2 emissions embodied
in China-US trade
@3.3. SDA results
4. Uncertainties
5. Conclusions
Acknowledgements
References