摘要
基于遥感(RS)和地理信息系统(GIS)技术,以Landsat TM图像为基本数据,运用生态系统服务价值的计算公式以及谢高地等人的中国陆地生态系统单位面积生态服务价值表,研究了天津市滨海新区1990—2010年土地利用变化对生态系统服务价值的影响。结果表明:研究期内,建设用地和耕地面积明显增加,湿地和水体面积变化不大,草地和裸地面积则明显减少。研究区内生态系统服务价值从1990年的31.525亿元减少到2010年的28.817亿元,各类生态系统服务价值的变化情况大致与土地利用类型的变化情况相同。各单项服务价值中,除食物生产外,其它单项服务类型价值均呈持续减少趋势,主要原因是价值比例系数相对较高的草地面积大量减少所致。土地利用结构变化使环境压力呈持续增大趋势。
Based on the remote sensing images （RS） and geographic inform action system （GIS） technique and the Landsat TM data, the effects of land use change on ecosystem service value in Binhai New Area from 1990 to 2010 were studied by applying the table of Chinese land ecosystem service value （ESV） of unit area and the ESV computing fomula. Result showed that the estimated area of pasture land and unuesd land decreased but that of cultivated land and construction land increased, while the cover of wet land and water area nearly kept the same during the research period. The total ecosystem service value dropped from 31. 525 × 10^8 yuan in 1990 to 28. 817× 10^8 yuan in 2010. The changes of different ecosystem service value were similar with the change of land use. Except food production, the value of single ecosystem service function all decreased for the reduction of pasture land and its high ecosystem coefficient. Land use change made the environmental presure continuously increase.
出处
《城市环境与城市生态》
CAS
2013年第1期5-8,共4页
Urban Environment & Urban Ecology
基金
天津市自然科学基金重点项目(11JCZDJC24500)
