松嫩平原生态脆弱区生态系统服务功能价值变化

Dynamics of the Ecosystem Service Values of the Ecotone in Songnen Plain

在遥感和地理信息系统技术支持下,以1986～2000年的1∶100000LandsatTM图像解译数据为基础,全面分析了1986～2000年该区土地利用/覆被的动态变化特征,运用Costanza等人对全球生态系统服务价值的计算方法,对松嫩平原西部生态脆弱区土地利用/土地覆被变化(LUCC)引起的生态环境质量变化进行了评估。计算结果表明:在1986～2000年间,由于土地利用面积的变化而使该地区的生态系统的生态价值减少,松嫩平原西部耕地和城乡建设用地有所增加,其他林地、草地、水域和未利用地的面积均减少。耕地面积增加的比例为9.80%、城乡建设用地增加0.66%;林地、草地、水域和未利用地面积减少的比例分别为1.10%、6.80%、1.20%和1.20%,15年的时间里松嫩平原西部生态脆弱区生态系统总价值减少7000.15×104美元,使生态系统服务价值损失9.74%。

Using RS and GIS, based on the data of 1：100 000 Landsat TM, the paper analyzes briefly land use/ cover change in the ecotone of Songnen Plain from 1986 to 2000.Thus the dynamics of eco-environmental quality caused by LUCC were evaluated by using Costanza＇s method of evaluating the world＇s ecosystem service. The results indicate： during 1986-2000, the ecosystem service values in this area have been diminished due to land use change. The area of cultivated land, city and town land have a little increase, while the area of woodland, pasture, water body and unuseland have decrease. The increase ratio of cultivated land is 9.80%, city and town land is 0.66%;the decrease ratio of woodland, pasture, water body and unuseland is 1.10%,6.80%,1.20% and 1.20% in difference. Values of the ecotone in the west part of Songnen Plain＇s ecosystem service lost 7 000.15× 10^4US$, with the decrease of 9.74% in Ecosystem service values .