Abstract:

Material flow analysis (MFA) is considered as one of the important tools and methods which are applicable to the evaluation of ecoefficiency.However,studies applying the MFA in regional ecoefficiency evaluation are still few.This paper established the three aspects of indicators for regional ecoefficiency derived from MFA account based on ecoefficiency theory and method of MFA.The indicators include regional direct ecoefficiency,regional total ecoefficiency and whole ecoefficiency.The regional ecoefficiency in three aspects of Jiangsu Province was evaluated on the basis of regional material flow analysis with the evidence from Jiangsu Province in 1995~2005.The results showed:(1)the regional direct ecoefficiency of Jiangsu Province was much higher than that of China in the same period.The regional total ecoefficiency and whole ecoefficiency was〖JP2〗 comparatively low,which was 15%~22% and 7%~8% of regional〖JP〗 direct ecoefficiency,respectively;(2)direct ecoefficiency increased significantly from 1995 to 2000 and then decreased.The reasons were that the material and resource productivity did not increased significantly and the proportion of heavy industry in the industrial structure increased in recent years;(3)the variation of whole ecoefficiency was similar with that of direct ecoefficiency because the import of material and resource significantly increased;(4)total ecoefficiency increased significantly from 1995 to 2000 and then increased slowly in recent years.Based on the thoroughly analysis and discussions on the results and their causes,authors thought that rapid development of the economic of Jiangsu Province also affected the resource and environment of Jiangsu Province and its import regions of material and resource.According to the development status of Jiangsu Province,the paper explored the potential solutions that will improve ecoefficiency in Jiangsu.

Key words: regional ecoefficiency/MFA (material flow analysis)/Jiangsu Province