洞庭湖区20年生态损益估算  

Estimation on the ecological degeneration in Dongting Lake area for two decades

作　　者：梁守真[1] 李仁东[1] 朱超洪[1] 

机构地区：[1]中国科学院测量与地球物理研究所

出　　处：《华中师范大学学报（自然科学版）》2005年第3期414-418,共5页Journal of Central China Normal University：Natural Sciences

基　　金：中国科学院知识创新工程资助项目(KZCX2-SW-415)

摘　　要：利用Landsat TM遥感影像获取土地利用变化数据的基础上,参考Costanza 等人对全球生态系统服务价值的测算方法,估算了洞庭湖区生态系统服务价值及变化.结果表明,水域、建设用地面积增加,湿地、林地、耕地面积减少,草地面积变化不大;1980年洞庭湖区生态系统服务总价值为83.159×108美元,2000年的总价值为82.371×108美元,由于土地利用面积变化,导致了1980～2000年生态系统服务价值减少了7 880×104美元,而这主要是由湿地大面积减少引起的.Ecosystem services and the natural capital stocks that produce them are the Earth＇s life-supporting system. Valuing the ecosystem services is a necessary condition to make it to be a part of socio-economic system, and an important measure that makes environment and ecosystem protection regarded. Based on the data of land use change extracted by analyzing Landsat TM data, the paper, applying Costanza＇s method of evaluating the world＇s ecosystem services, evaluates the ecosystem services value and its change caused by land use change in the Dongting Lake area. The result shows that, the acreage of water body and build-up land are increasing, in contrast, that of wetland, forest and cultivated land are decreasing, While the acreage of grassland doesn＇t change. The ecosystem services value is 8. 3159 billion dollars in 1980 and 8. 2371 billion dollars. From the year 1980 to the year 2000 the value of the ecosystem services decreased 78.8 million dollars due to land use change. The dominating reason is that wetland area decreased largely.

关 键 词：洞庭湖 土地利用变化 生态系统服务 生态价值 

分 类 号：F223[经济管理—国民经济] F124.5