在利用NOAA/AVHRR数据得到海河流域农牧交错带土地利用变化数据的基础上,采用Costanza等人对全球生态系统服务价值的测算方法,评估了海河流域上游农牧交错带地区土地利用变化引起的生态环境质量变化。研究结果表明:在过去10年海河流域上游农牧交错带区域,土地利用的变化损害了该区域生态系统的生态服务功能,使生态系统服务价值损失2.5%～2.7%,达到4.18×107～4.90×107美元。

The land use changes of farming-pastoral zone along the upper reaches of Haihe Ri-ver were obtained by analyzing NOAA/AVHRR data.Thus the dynamics of eco-environmental quality caused by land use changes were evaluated by using Costanza's method of evaluating the world's ecosystem service.The results indicate,the ecosystem service values of farming-pastoral zone along the upper reaches of the Haihe River have been diminished due to the land use change in the past10years.The loss of ecosystem service values is around2.5%～2.7%,equa-ling to4.18×10 7 ～4.90×10 7 US$.