水土保持研究2013，Vol.20Issue(3)：249-253,5.
湘潭农业生态系统的能值分析及其可持续性评价
Analysis on the Energy of Agro-ecosystem and Assessment of Sustainable Development in Xiangtan
摘要
Abstract
In order to improve agriculture productivity,promote agro-ecosystem sustainable development in Xiangtan,the input-output condition,work efficiency,and environmental load of the agro-ecosystem in Xiangtan were systematically assessed based on the theory and method of energy analysis from 2000 to 2008.The results showed that the renewable organic energy dominated over the majority of energy input in Xiangtan,the agro-ecolomic system in Xiangtan still stayed in the period shifting from traditional to modern agriculture,proportion dropped from 0.58 in 2000 to 0.49 in 2008,which mainly depended on man power.The majority of energy output was forestry,while crop cultivation and fishery had a relatively low percentage,especially the fishery,which didn't reach to 0.01％.Xiangtan had a low environment load ratio and the resources were not fully developed,thus the agroecosystem had a large development potential; the energybased sustainable index of agroecosystem in Xiangtan was in ascendant trend,the range varied from 0.03 to 0.11,which showed that the agroecosystem belonged to consumer economic system.To promote the virtuous cycle of agro-economic system in Xiangtan,we should gradually adjust the investment proportion of input and output energy.关键词
能值分析/能值投资率/环境负载率/可持续发展指数/农业生态环境Key words
energy analysis/ energy investment ratio/ environmental loading ratio/ development index/agro-ecosystem分类
管理科学引用本文复制引用
熊林金,周子英,徐邹华,杨君,朱玲瑶..湘潭农业生态系统的能值分析及其可持续性评价[J].水土保持研究,2013,20(3):249-253,5.基金项目
湖南省教育厅资助项目(CX2010B298) （CX2010B298）
湖南农业大学引进人才基金(07YJ17) （07YJ17）
