Greenhouse Gas Emissions by Chinese Economy:An Assessment Based on EIO-LCA Model

The authors investigate greenhouse gas(GHG) emissions of the Chinese economy by producing sectors from production-based and consumption-based perspectives.A sectoral GHG emissions matrix is built based on Chinese Economic Input-Output Life Cycle Assessment(EIO-LCA) Model 2007 to incorporate the two perspectives in the same analysis framework.This matrix provides a better understanding of the relationship between GHG emissions from production and final demand.The results show that electric and heat power sector contributes the most direct emissions,36.24% of total emissions,of which 93.91% are due to the production for other sectors,especially construction sector.Final demand for construction sector acounts for the highest embodied emissions,29.79% of total emissions,of which 97.10% are emitted in other sectors of the supply chain,especially electric and heat power sector.Electric and heat power sector holds the top embodied emission intensity of 9.88 ton CO2-eq/104 yuan,of which direct emission intensity contributes 89.70%.