紫色土区陈家湾流域农业生态经济系统的能值分析  

Energy Analysis on Agricultural Eco-economic System in Chenjiawan Watershed at Purple Soil Area

作　　者：靳雪艳[1] 朱首军[1] 高美荣[2] 

机构地区：[1]西北农林科技大学资源环境学院,陕西杨陵712100 [2]中国科学院成都山地灾害与环境研究所,四川成都610041

出　　处：《西北林学院学报》2010年第3期214-218,共5页Journal of Northwest Forestry University

基　　金：973项目专题"西南紫色土区水土流失综合调控原理与治理范式"(2007CB407207-01);北京林业大学优秀青年教师科技创新计划(BLYX200927)

摘　　要：运用能值分析的理论与方法,研究了四川紫色土区陈家湾流域农业生态经济系统的能值投入和产出结构,并通过计算、对比能值评价指标,分析了该流域农业生态经济系统的发展现状。结果表明:2007年该流域净能值产出率为3.94,能值投资率为1.85,环境负载率为0.34,人均能值用量1.76×1015sej,可持续发展指数为11.56,系统生产效率较高,但经济不发达,流域农业处于传统农业阶段。为了实现其可持续发展,应增加能值投入,尤其是加强对可更新有机能及生物资源的回收利用,增大农业科学技术的投入,调整农业产业结构。The structure of emergy input and output of agricultural eco-economic system in Chenjiawan small watershed,a case in purple soil area was investigated.Current developmental situations of agricultural eco-economic system in this area were analyzed by calculating and comparing the indices of energy assessment.The results showed that the net energy yield ratio was 3.94,energy investment ratio was 1.85,environment load ratio was 0.34,energy per person was 1.76×1015sej,and the sustainability index was 11.56 in 2007.The agricultural eco-economic system in Chenjiawan had a higher production efficiency,but economically underdeveloped,and it was in the stage of traditional agriculture.In order to achieve the sustainable development of agriculture,it was suggested that the input energy should be increased,particularly the recycling of renewable organic energy and biological resources should be reinforced,the investment in agricultural science and technology should be increased,and the agricultural structure should be adjusted.

关 键 词：紫色土 农业生态经济系统 能值分析 

分 类 号：F062.2[经济管理—政治经济学]