吉林省西部土地利用变化对生态系统服务价值的影响

Influence of the Western Jilin Province Land Utilization Change to Ecosystem Service Value

以1993年和2003年两期Landsat TM/ETM影像解译数据为基础,分析吉林省西部地区10年来的土地利用/土地覆被变化,并计算由此导致的生态系统服务价值(ESV)变化.结果表明:10年来,研究区水田、林地、未利用土地和建筑用地面积大幅增加,草地、湿地、水域和旱田面积大幅减少;ESV由1993年的988.45亿元减少到2003年的921.12亿元,年均递减率达0.68%;生态系统单项服务功能价值中,气体调节、土壤形成与保护、食物生产、原材料等服务价值在增加,气候调节、水源涵养、娱乐休闲、废物处理、生物多样性保护等服务价值在减少.

Based on the data of Landsat TM/ETM, we analyze land use/cover change and examineins their effects on ecosystem services value in the west of Jilin province from 1993 to 2003. The following results and conclusions are obtained：from 1993 to 2003, the area of rice paddy, woodland, unutilized and build-up land increased, while grassland, wetland, water area, dry farmland decreased; the total value of ecosystem services of the study area declined from 988.45 × 10^8 RMB in 1993 to 921.12 × 10^8 RMB in 2003, with the net decline of 67.33 × 10^8 RMB during the 10-year time period; the contribution of various ecosystem functions to the overall value of the ecosystem services mainly comes from the increase in gas regulation, soil formation and disposition, food production and raw materials, while climate regulation, water conservation, recreation, waste treatment and bio-diversity conservation had a decreased effect.