左江流域农业生态经济系统健康评价方法研究  

An Approach to Agroecosystem Health Assessment in Zuojiang Basin

作　　者：王艳[1] 卢远[1] 华璀[1] 

机构地区：[1]广西师范学院资源与环境科学学院,广西南宁530001

出　　处：《广西师范学院学报（自然科学版）》2010年第1期70-76,共7页Journal of Guangxi Teachers Education University(Natural Science Edition)

基　　金：国家自然科学基金(47061027)

摘　　要：以生态系统健康为基础,提出了评价流域生态系统健康的方法体系、指标和健康指数.从结构、功能和响应3方面选取人均基本农田、人均水资源量、劳动力集约度、耕地占土地面积比例、经济作物播种面积比例等20个指标,构建了左江流域农业生态经济系统健康的评价指标体系.然后应用均方差法、多目标线性加权函数法等多种方法和手段,在流域尺度上对左江流域8个农业生态区进行农业生态系统健康评价.结果:处在"较健康"状态的是上思和凭祥;处在"亚健康"状态的是宁明、大新、龙州、扶绥、天等和江州区.左江流域农业生态经济系统健康综合评价结果的排名次序为:上思>凭祥>宁明>天等>大新>扶绥县>龙州>江州区.Based on the conception of ecosystem health, an approach and its indicators are brought for- ward in this paper. The indexes included average per person basic farmland, average per person water amount of resources, labor force collection measure, the farming accounts for the land area proportion, in- dustrial crop sown area. Then the paper used various methods and means such as mean square method of dif- ference, multi-objective linear weighting function method and so on to assess the healthy state of the eight agricultural eco-zones in Zuojiang basin. At last we got the following results. Agroecosystem in Shangsi and Pingxiang were＂healthy＂ ,Ningming, Daxin, Longzhou, Fusui, Tiandeng, Jiangzhou were＂sub healthy＂. The order from the best to the worst,among the eight agricultural cox〉zones in Zuojiang basin was Shangsi, Pingxiang, Ningming, Tiandeng, Daxin, Fusui, Longzhou, and Jiangzhou.

关 键 词：农业 生态经济系统 健康评价 指标体系 左江流域 

分 类 号：X22[环境科学与工程—环境科学]