生态与农村环境学报2016，Vol.32Issue(6)：887-894,8.DOI:10.11934/j.issn.1673-4831.2016.06.004
三峡库区（重庆段）地表起伏度及其对生态系统服务价值的影响
Surface Relief Degree and Its Effects on Ecosystem Service Value in the Chongqing Section of the Three Gorges Reservoir Region, China
摘要
Abstract
Relief degree of ground surface ( RDGS ) is closely related to magnitude of the ground surface and hence to land use patterns, which consequently affects service value of the ecosystem in the region. The objective of the study is to examine effect of RDGS on ecosystem service value in the Chongqing Section of the Three Gorges Reservoir Region, China. The ASTER GDEM V2 dataset was used to extract RDGS of the region by means of window analysis. Based on the land use data available, ecosystem service value in the section was worked out using Costanza′s method and the modified ecosystem service value coefficients. Then correlation between the RDGS and land ecosystem services value was quantitatively ana⁃lyzed. Results show that:(1) The landform is complicated and the RDGS varies sharply in the region. As a whole, RDGS is higher in the east than that in the west, and the highest in Wuxi (1�360 3),and the lowest in Yuzhong(0�289 0). (2) Per capita ecosystem service value distributed unevenly in space. The value is high in the eastern part, for it is com⁃posed of natural forest reserves and water conservation and low in the western part, for it consists mainly of key develop⁃ment zones of cities and new urban development areas. ( 3) A positive relationship is observed between RDGS and per ca⁃pita ecosystem service values. In terms of effect of RDGS on ecosystem service values, the services display a decreasing or⁃der of raw material production> food production> gas regulation> climate regulation> total value> hydrological regulation>soil conservation>provision of aesthetic landscape> maintenance of biodiversity> waste disposal. The study reveals that strengthening the protection of natural forest reserves and water conservation zones in the areas high in RDGS is an effective way to protect and improve the ecosystem service values in the Three Gorges Reservoir Region.关键词
三峡库区(重庆段)/地表起伏度/生态系统服务/价值Key words
the Three Gorges Reservoir Region (Chongqing Section)/relief degree of ground surface/ecosystem service/value分类
资源环境引用本文复制引用
郭晓娜,苏维词,李强,潘真真..三峡库区（重庆段）地表起伏度及其对生态系统服务价值的影响[J].生态与农村环境学报,2016,32(6):887-894,8.基金项目
国家自然科学基金（41261038）；贵州省科技创新人才团队（黔科合人才团队［2014］4014）；贵州省财政厅重点课题 （）
