成渝经济区土地利用与生态服务价值动态分析  

Dynamic analysis of land use and ecosystem services value in Cheng-Yu Economic Zone,Southwest China

作　　者：袁兴中[1,2] 肖红艳[1,2] 颜文涛[3] 李波[1,2] 

机构地区：[1]重庆大学资源及环境科学学院,重庆400044 [2]煤矿灾害动力学与控制国家重点实验室,重庆400044 [3]重庆大学建筑城规学院,重庆400045

出　　处：《生态学杂志》2012年第1期180-186,共7页Chinese Journal of Ecology

基　　金：环境保护部"区域和行业重大发展战略环境评价"财政专项(2110203)资助

摘　　要：成渝经济区是长江上游的生态屏障,其生态环境脆弱,维持和提高该区域的生态系统服务功能非常重要。基于2000和2007年遥感影像数据,利用GIS和RS工具定量分析了成渝经济区2000—2007年土地利用的时空变化特征,并运用改进的生态服务价值系数,评价了土地生态系统服务功能的动态变化。结果表明:研究期间区域内建设用地以5.3%的年增长率增加,增加面积1044.5km2;林地面积增加最大(2908.7km2),年变化率为0.5%;耕地、草地,水体和未利用地分别以-0.3%、-2.0%、-0.7%和-2.9%年变化率减少,其中耕地减少面积最大,为2388.9km2;2000—2007年土地生态系统服务功能有所上升,总价值由3188.4亿元增加到3211.5亿元;林地转入以及耕地和草地转出是导致总价值增加的主要原因,生态系统服务功能降低主要是由于林地转出所致。为维持区域生态系统服务功能,应加强对林地和湿地等生态系统服务价值高的土地类型的保护。Cheng-Yu Economic Zone is an ecological barrier of the upper reaches of Yangtze River, but its eco-environment is fragile. It is of significance to maintain and improve the ecosystem services of the Zone. Based on the satellite images taken in 2000 and 2007, and with the help of RS and GIS techniques, this paper quantitatively analyzed the spatiotemporal variations of land use in the Zone, and by using modified ecosystem services value coefficient, evaluated the dynamic changes of land ecosystem services, aimed to understand the responses of the ecosystem services to land use change and to provide useful information for policy maker concerned with the sustainable development of the Zone. In 2000-2007, the constructive land showed the fastest increase （1044.5 km^2）, with an annual increasing rate 5.3%, forestland had the largest increase （2908.7 km^2）, with an annual increasing rate 0.5%, grassland, water body, and unused land decreased with an annual rate of -2.0%, -0.7%, and -2.9%, respectively, while cropland shrank largest （2388.9 km^2）, with an annual rate -0.3%. Owing to the land use change, the total land ecosystem services value had somewhat increase, with the total value increased from 318.84 billion Yuan in 2000 to 321.15 billion Yuan in 2007. The increase of the total value was mainly contributed to the conversion from other land use types to forestland and from cropland and grassland to other land use types, while the decrease of the ecosystem services function was mainly due to the conversion from forestland to other land use types. To maintain the land ecosystem services function and sustainable development of the Zone, it would be necessary to protect the land use types with high ecosystem services value （e.g, forestland and wetland）.

关 键 词：动态分析 土地利用 生态系统服务功能 成渝经济区 

分 类 号：F301[经济管理—产业经济] X171[环境科学与工程—环境科学]