Emergy Analysis of Sustainability of Eco-economic System in Sichuan's Baisha River Valley
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Using emergy analysis method, I conduct quantitative analysis of social, economic and natural systems in Sichuan's Baisha River valley during the period 2002-2006, through the establishment of indicators. I compare the emergy of Baisha River valley, with that of Xinjiang's Manas River valley and Sichuan Province, and evaluate the sustainable development conditions in Baisha River valley, in order to provide corresponding reference for the development and utilization of Baisha River valley in the future. The results show that from the perspective of emergy input of economic system, Baisha River valley is a typical ecological and economic zone with rich resources to be developed; in terms of the development of natural conditions and utilization of ecological resources, the resource utilization intensity of Baisha River valley is weak and the environmental loading ratio there is low, thus the level of emergy yield needs to be improved; the system of Baisha River valley has enormous capacity for sustainable development and good potential for development.