西安城区土地利用/覆被变化及生态效应测评研究

利用两期遥感影像,以ArcGIS9.0和ERDAS8.5为平台分析了西安市2000~2007年间土地利用时空变化过程；并对研究区2000~2007 年间土地利用变化引起的生态效应变化进行了测评；结果表明：7 a间西安城区土地利用/覆被变化显著，综合土地动态度为1.9%，建设用地面积逐年增加，年变化率为3.1%；耕地、未利用地、园地、水体面积有所减少，西安城区的生态系统服务价值从2000年的259.8 ×106元减少到2007年的233.6×106元，共减少了26.2×106元；经证实用遥感与地理信息系统技术研究因土地利用/覆被变化引起的生态响应是一种有效的方法。

Research on Land Use/Cover Change and Ecological Effects Evaluation in Xi'an Urban Area

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The land use change process in Xi’an form 2000 to 2007 was analyzed by using ArcGIS9.0 and ERDAS8.5 as the platform and the ecological effects change caused by LUCC from 2000 to 2007 was also calculated.The results show:Xi’an land use/cover change was great during the past 7 years,the comprehensive land dynamic degree was1.9%,construction land area increased year by year,the rate of change per year achieved 3.1%; The Xi’an city ecosystem services values reduced during 7 years from 259.8 ×106 Yuan to 233.6×106 Yuan,totally reduced 26.2×106 Yuan; This article proved study the land use/cover change caused by ecological effects by GIS and RS was an effective method.