四川白沙河流域生态经济系统可持续性能值分析

Energy Analysis of Sustainability of Eco-economic System in Sichuan Baisha River Valley

利用能值分析的方法,通过建立指标对2002～2006年四川白沙河流域的社会、经济和自然系统进行定量分析,并与新疆玛纳斯河流域以及四川省进行比较,从而评估白沙河流域的可持续发展情况,为白沙河流域今后的开发利用提供参考。结果表明:从经济系统能值投入的角度看,白沙河流域是典型的资源丰富待开发型生态经济区;从自然条件开发和生态资源利用的角度看,白沙河流域资源利用强度较弱,环境负荷率较低,能值产出水平有待提高;白沙河流域系统具有较强的可持续发展能力和较好的发展潜力。

Using emergy analysis method, I conduct quantitative analysis of social, economic and natural systems in Sichuan＇ s Baisha River val- ley 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 corre- spending 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 devel- opment of natural conditions and utilization of ecological resources, the resource utilization intensity of Baisha River valley is weak and the envi- ronmental loading rate there is low,thus the level of emergy output needs to be improved ; the system of Baisha River valley has enormous capacity for sustainable development and good potential for development.