环巢湖流域土地利用变化对生态服务价值的影响

Effect of Land Use Change on Ecosystem Service Value in the Watershed Surrounding Chaohu Lake

以环巢湖流域快速城市化阶段即1999年到2009年期间的土地利用动态数据为基础,探讨了土地利用变化及其对生态系统服务价值的影响。结果表明,1999年到2009年研究区耕地显著减少而建设用地显著增加。快速城市化阶段,耕地主要转为建设用地,部分生态系统服务功能都出现不同程度的衰退。生态系统服务价值也从1999年的109.29亿元减少到2009年的107.07亿元,净减少2.23亿元。在快速城市化的进程中,环巢湖流域区域更要关注耕地的保护来维持其正常的生态系统服务功能以促进流域可持续发展。

Effect of land use change on ecosystem service value in the watershed surrounding ChaohuLake between 1999 and 2009 was investigated in this paper using data deriving from LANDSAT TM images. Results showed that in the rapid urbanization period, the most notable changes of land use were the decrease of cropland and the increase of build- up land. With the development of urbanization, increasingly changing lands were occupied for the construction purpose. The total ecosystem service values of the study region reduced from 10.929 billion Yuan in 1999 to 10.707 billion Yuan in 2009, with the net decline of 0.223 billion Yuan. Local ecosystem service functions and sustainable development in the watershed surrounding Chaohu Lake have been severely influenced due to rapid urbanization. More attention should be paid on the conservation of cropland in the process of urbanization of watershed surrounding Chaohu Lake.