国土资源遥感Issue(4)：115-120,6.
基于RS与GIS的LUCC生态服务功能价值动态核算
Dynamic Evaluating Regional Land- cover Changes and Associated Ecosystem' s Service Value Based on RS and GIS
摘要
Abstract
The exploration and calculation of the eco - environment response to LUCC in Cuanzhong area constitute the basis for the study and application of ecological compensation and for the realization of regional sustainable development. In this paper, the method for decision tree - based multi - layer information extraction and supervised classification was employed to extract the information of land cover in Cuanzhong area in 1990,2000 and 2007. Then the different kinds of general service values of ecosystems in Guanzhong area in 1990,2000 and 2007 were evaluated respectively using the method of ecological economics. Some conclusions have been drawn: ① In 1990, 2000 and 2007, the total service values of Cuanzhong area's ecosystems were 55.739 billion yuan ,50.729 billion yuan and 53.377 billion yuan respectively, which further demonstrated that the regional service values of ecosystems decreased abruptly due to local serious degradation and deterioration of forest and grass from 1990 to 1998,and were increasing significantly after 1998 due to implementation of returning cultivated farmland to grassland and forest land. ②The index of ecosystem's capacity to support economy in Guanzhong area rose from 0.436 9 in 1990 to 6.430 2 in 2007, which indicated that pressure on ecosystem is increasing continuously with the development of economy,and the task of ecosystem restoration and construction remains a key link in keeping the sustainable development of regional economy.关键词
关中地区/土地利用/覆盖变化(LUCC)/生态服务功能价值/生态经济承载指数/遥感(RS)/地理信息系统(GIS)Key words
Cuanzhong area/ Land use/land cover change ( LUCC ) / Service value of ecosystem/ Index of ecosystem' s capacity for supporting economy/ RS/ GIS分类
信息技术与安全科学引用本文复制引用
郝慧梅,郝永利,田党生..基于RS与GIS的LUCC生态服务功能价值动态核算[J].国土资源遥感,2011,(4):115-120,6.基金项目
国家自然科学基金项目“西北河谷平原土地生态安全动态与可持续发展途径”(编号:40771019)资助. （编号:40771019）
