基于RS、GIS土地利用及其生态服务价值变化的研究

Land use and its change in the value of ecosystem services based on RS and GIS

以遥感影像资料为依据,运用Costanza的生态服务价值计算方法,在RS和GIS的支持下分析1996～2000年哈尔滨市阿城区土地利用及其生态服务价值的时空变化特征。结果表明:土地利用类型以耕地为主,1996年面积比例为54.38%,2000年为54.55%;耕地、林地、草地、水域、建设用地均有较高的保留率,分别为99.68%、99.26%、99.34%、97.24%、97.73%;未利用地的保留率较低,为64.67%;生态服务价值2000年较1996年增加了9.6×106元,生态环境改善,草地、耕地、林地向水域的转移是生态价值增加的主要原因;生态环境增值区域,耕地到水域的转化贡献率最大,为15.96%;生态环境减值区域,林地转化为耕地的贡献率最大,为36.81%。

Based on remote sensing image data, using the method of the value of ecosystem services Costanza, the spatial and temporal changes of land use and its ecological services was analyzed in Harbin A Cheng district with the support of RS and GIS. The results shown that： cropland was major land use type, the area proportion was 54. 38% in 1996 , 54. 55% in 2000, cropland , forestland, grassland, water and built-up land had a higher preserving ratio, which were 99.68G, 99.26%, 99.34%, 97.24%, 97.73%, but the preserving ratio of unused land was lower, which was 64. 67%. The increase value of ecosystem services was 9.6X 106yuan （RMB）, it mean that the ecological environment improved , the reason fo- cused on the transfer from grassland, forest land , cropland and forestland to water, the conversion of cropland to water was greatest contribution in ecological value-increased region, which was 15.96G, the conversion of forestland to cropland was greatest contribution in ecological value-decreased region, which was 36. 81%.