Journal
ECOLOGICAL ECONOMICS
Volume 70, Issue 1, Pages 10-18Publisher
ELSEVIER
DOI: 10.1016/j.ecolecon.2010.08.016
Keywords
Emissions embodied in trade; Input-output analysis; Spatial aggregation
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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 (C) 2010 Elsevier B V All rights reserved
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