Zhou De-Cheng, Luo Ge-Ping, Xu Wen-Qiang, Feng Yi-Xing
Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China.
Ying Yong Sheng Tai Xue Bao. 2010 Feb;21(2):399-408.
By using GIS-RS techniques and the table 'Equivalent weight of China terrestrial ecosystems services value', in combining with the local grain yield and grain purchasing price, this paper analyzed the changes of ecosystem services value in Aksu River watershed in 1960-2008, and explored the responses of ecosystem services value change in arid trans-boundary river watershed to land use/cover change. Overall, the ecosystem services value in Aksu River watershed in 1960-2008 changed slightly, with the total value increased after an initial decrease. The main cause of the initial decrease was the area decrease of wetland, woodland, and grassland. The area increase of cropland and water body partly offset the loss of the total value, but the loss was still larger than the gain. The contribution of each ecosystem service value to the total ecosystem services value had less change, and the service value from soil formation and protection together with waste treatment contributed most. There was a significant spatial heterogeneity in the magnitude and the variation of ecosystem services value, with the downstream of the watershed changed significantly. Sensitivity analysis indicated that the estimated total ecosystem services value in the study area was inelastic to the services value coefficients, and the results shown in this paper were robust.
利用地理信息系统-遥感（GIS-RS）技术和“中国陆地生态系统服务价值当量”表，结合当地粮食产量和粮食收购价格，分析了1960—2008年阿克苏河流域生态系统服务价值的变化，并探讨了干旱跨界河流域生态系统服务价值变化对土地利用/覆盖变化的响应。总体而言，1960—2008年阿克苏河流域生态系统服务价值变化较小，总值先下降后上升。初期下降的主要原因是湿地、林地和草地面积减少。耕地和水体面积增加部分抵消了总值的损失，但损失仍大于增益。各生态系统服务价值对生态系统服务总值的贡献变化较小，土壤形成与保护及废物处理的服务价值贡献最大。生态系统服务价值的大小和变化存在显著的空间异质性，流域下游变化显著。敏感性分析表明，研究区生态系统服务总值对服务价值系数缺乏弹性，本文结果具有稳健性。
