奎屯河流域土地利用/覆被及生态系统服务功能变化

【目的】分析25年来奎屯河流域土地利用/覆被与生态系统服务功能的变化,以期为该区域资源管理和生态经济协调发展提供理论基础。【方法】在3S技术的支持下,以1975年和2000年的TM图像解译数据为基础,采用谢高地的评价方法分析了25年来奎屯河流域土地利用/覆被与生态系统服务功能的变化特征。【结果】1975~2000年,奎屯河流域耕地、城乡建设用地、盐碱地和沙地有所增加,其他林地、草地、水域和沼泽的面积均减少;区域生态系统服务功能从1975年的3 108.68×106元减少到2000年的2 953.91×106元,减少量为154.77×106元,减少率为4.98%;【结论】生态系统服务价值降低说明该区域生态环境趋于恶化,将来区域发展必须加强生态环境保护力度。

Land Use/Cover Change and Ecosystem Service Function in Kuitun River Basin

【Objective】The purpose of this article was to analyze the change of land use/cover change and ecosystem service function in Kuitun River Basin over the past 25 years to provide the theoretical basis for the resource management and ecological economical development in Kuitun region.【Method】based on 3S technology and the interpreting data from the Land sat TM images in 1975 and 2000,this paper adopted the valuating method of XIE Gao-di to analyze the change in land use and ecosystem service values over the past 25 year in the Kuitun River basin.【Result】The results showed that the area of farmland,cultivated land,kaline soil,sand land increased and other categories decreased in 1975 to 2000;The total ecosystem service function decreased slightly by 3 108.68×106 Yuan to 2 953.91×106 Yuan.The regional total decreased quantities was 154.77×106 Yuan with 4.98% decreased rate 【Conclusion】The decrease of total ecosystem service values indicated the ecosystem inclined to deteriorate.So,protecting regional ecological environment was the important factors to the establishment of regional sustainable development strategy.