重庆市农业生态经济系统能值分析  

Energy Analysis of Agricultural Eco-economic Systems in Chongqing

作　　者：杨松[1] 孙凡[1] 刘伯云[1] 杜洋文[1] 李霞[1] 

机构地区：[1]西南大学三峡库区生态环境教育部重点实验室资源环境学院,重庆400715

出　　处：《西南大学学报（自然科学版）》2007年第8期49-54,共6页Journal of Southwest University(Natural Science Edition)

基　　金：重庆市自然科学基金资助项目(No:8992)

摘　　要：应用H.T.Odum的能值分析理论方法,对重庆市农业生态经济系统的能值流进行了分析.结果表明:2005年,能值投入量为327.42×1020sej,能值产出量为756.87×1020sej,净能值产出率为3.67,环境负载率为1.80,可持续发展指数为2.04.重庆农业处于传统农业向现代农业转变的转型期.为了促进重庆农业的可持续发展,应加强系统的能值投入和农业基础设施的建设,增大农业的科学技术研究和推广力度,优化系统的投能结构,调整农业产业结构.Based on the theory of emergy analysis created by H. T. Odum, this article investigates quantitatively the emergy flow of agricultural Eco-economic systems in Chongqing. The results indicate that the solar energy input , the solar energy output, the net energy output ratio, the environment loading ratio and the sustainability index are 327.42×10^20sej, 756.87×10^20 sej, 3.67, 1.80 and 2.04, respectively, in 2005. Chongqing is now in the stage of transformation from traditional agriculture to modern agriculture.In order to promote the sustainable development of agriculture in Chongqing, it is suggested that the energy input and infrastructure construction of agriculture should be reinforced, which need to increase the investment in agricultural science and technology, optimize the structure of the emergy input in the Eco-economic system and adjust the agricultural structure.

关 键 词：能值 能值分析 生态经济系统 可持续发展 重庆 

分 类 号：F062.2[经济管理—政治经济学]