黄土丘陵沟壑区退耕还林(草)工程的经济效应--以安塞县为例  

Analysis on economical effect of project of "returning farmland to forest and grassland" in the Loess Hilly and Gully Area: a case study in Ansai County

作　　者：刘志超[1] 杜英[2] 徐丽萍[2] 杨改河[1] 冯永忠[1] 

机构地区：[1]西北农林科技大学农学院 [2]西北农林科技大学资源环境学院

出　　处：《生态学报》2008年第4期1476-1482,共7页Acta Ecologica Sinica

基　　金：国家重大基础预研资助项目(2005CCA05300)~~

摘　　要：退耕还林(草)工程的经济效应关系到人工重构生态系统的稳定性,研究退耕区农村经济的发展情况,对科学评价退耕还林(草)工程经济效应具有十分重要的意义;本研究以安塞县退耕还林(草)试点工作为对象,采用参与性农村评估(Participatory Rural Appraisal,PRA)为调查方法,对安塞县实行退耕还林工程以来农村经济效应的变化情况进行调查;采用主成分析法对6个经济指标与退耕还林(草)经济效应的关系进行分析;用聚类分析法对8个模式的经济效应进行分类。主成分分析结果表明:6个经济效应指标可以简化为特色农业收入因子、粮食收入因子和非农业收入因子,并对各因子对经济效应的贡献作了详细分析。聚类分析结果表明:8个退耕模式可分成4个经济效应发展类型:经济效应增效型、经济效应稳步型、经济效应迟缓型和经济效应滞后型;从而进一步验证经济效应与农业结构调整、后续产业的发展、剩余劳动力转移的关系,为退耕还林(草)的顺利开展提供研究依据。Economical effect of Project of ＂Returning Farmland to Forest and Grassland＂ was related to stability of manmade ecological systems. It was very important to research the development condition of rural economy in areas of Grain for Green for scientific evaluation economical effect of the Project; A case study of Ansai County, a survey was carried out on change of rural economic effect after put in practice the Project though Participatory Rural Appraisal （PRA）; The grain income factor and the non-agricultural income factor, and it analyzes the detail of contribution of various factors to the economical effect. With the clustering analysis divided 8 patterns of take back from agriculture into 4 economical effect development types： synergize, level off, slow and detain. The research further confirms the relationship among the economical effect, the agricultural structure adjustment, the following industrial development and the surplus-labor shift, provides study basis for successfully development of the project.

关 键 词：退耕还林(草) 经济效应 主成分分析 聚类分析 黄土丘陵沟壑区 

分 类 号：S721[农业科学—林木遗传育种]