黑河流域土地利用变化对生态系统服务价值的影响

Effect of land-use change on ecosystem services value in Heihe river basin

利用1987年和2000年1∶100000LandsatTM图像解译数据分析了黑河流域土地利用变化,在此基础上,采用中国陆地生态系统服务价值的测算方法,评估了黑河流域土地利用变化引起的生态环境质量变化。结果表明,在过去的13年间,黑河流域土地利用变化总的趋势是森林、草地、河流冰川面积大幅减少,耕地、盐碱地和建筑用地迅速增加。这一变化损害了该区域的生态系统服务功能,使生态系统服务总价值(人民币)从404.22亿元/a下降到370.3亿元/a,损失率达到了8.39%。

Based on the data of 1:100000 Landsat TM in the Heihe River Basin, China in 1987 and 2000, this paper first analyzed the land-use and land coverage change. Then the dynamics of ecosystem services value caused by land-use changes were evaluated. The results indicate that the forest, grass and glacier land were greatly decreased from 1987 to 2000. On the other hand, the farming land, salina and land used for construction were increased rapidly. These changes impaired the function of ecosystem services in Heihe River Basin. The value of ecosystem services had decreased from 404.22×108 yuan (RMB) to 370.3×108 yuan (RMB), and the loss rate of ecosystem services value is 8.39%.