榆阳区土地利用和生态效应变化分析  

Relation between Land use/cover change and changes of ecological effect in wind drift sand region

作　　者：莫宏伟[1] 任志远[1] 谢红霞[1] 

机构地区：[1]陕西师范大学旅游与环境学院,陕西西安710062

出　　处：《陕西师范大学学报（自然科学版）》2005年第1期110-114,共5页Journal of Shaanxi Normal University：Natural Science Edition

基　　金：国家自然科学基金资助项目(40371003)

摘　　要：以榆阳区1988—2003年土地数据为依据,在分析研究土地利用的数量和结构变化特点的基础上,运用国内外学者在生态价值估算的方法与模式,结合该区的实际情况对估算方法进行修正,并对所研究时段内各年度的生态系统服务功能的经济价值进行了估算;以1988年土地数据为基准,测算了土地利用类型数量和结构变化所引起的生态系统服务功能的经济价值变化情况,分析了其变化的时段特点及变化原因,定量地揭示了在生态脆弱区环境与经济发展的关系.研究表明,1988—2003年,榆阳区土地利用变化所产生的环境响应总体来说是积极的,生态系统服务功能的经济价值年度总量在波动中提高;营造防护林、退耕还林及农用地内部结构调整政策的实施实现了经济和环境双赢的预期效果.Supported by the land use/cover change (LUCC) survey data, the authors have analyzed the feature of LUCC in Yuyang district during 1988—2003. After revising the parameters according to the concrete conditions of Yuyang district, the authors have used the method and mode about ecological value estimation put forward by domestic and international scholar to estimate the economic worth of ecosystem service function of Yuyang District during 1988—2003, analyze the feature and reason of the changes of the economic worth of the ecosystem service function in different periods, and explain the relation between the environment and economic development in ecological fragile district. Studies have shown: in Yuyang District, the environment respond to LUCC was positive and the economic worth of the ecosystem service function improved in general during 1988—2003. The implementation of policy about building the shelter forest, returning farmland to woodland and adjusting inside structure of agriculture, has made both economy and environment here a great progress.

关 键 词：土地利用变化 经济发展 榆阳区 农用地 年度 双赢 内部结构调整 经济价值 生态效应 生态系统服务功能 

分 类 号：N42[自然科学总论] F301[经济管理—产业经济]