浙江省沿海地区耕地变化  

Cropland change analysis in Zhejiang coastal region

作　　者：丁菡[1] 王人潮[1] 

机构地区：[1]浙江大学农业遥感与信息技术应用研究所,浙江杭州310029

出　　处：《浙江大学学报（农业与生命科学版）》2006年第5期585-590,共6页Journal of Zhejiang University:Agriculture and Life Sciences

基　　金：中德部级合作项目([1999]0238);浙江省重点项目(011106226)

摘　　要：为了获取浙江省沿海地区1985—2001年的耕地变化情况,利用1985,1993和2001年的TM/ETM+数据,采用非监督分类、影像融合和目视解译相结合的混合分类法,并以土地利用详查图作为辅助数据,取得了85%左右的影像分类精度.对分类结果分析表明:该地区耕地面积16年共减少了264036 hm2;减少耕地主要是转变为了城市建设用地;大多数县市区在1993年到2001年耕地减少量明显高于1985年到1993年.总之,在不同时期和不同地区耕地变化情况不同,耕地减少的趋势不可避免,要借助土地利用总体规划为农业及其他部门持续发展提供用地保障.In order to detect the cropland changes and its drivers in Zhejiang Province coastal region, TM and ETM＋ images in 1985, 1993 and 2001 were used. A stratified unsupervised classification technique in conjunction with visual interpretation was performed, and an overall classification accuracy of 85% was achieved. The study presented cropland decreased 264036 hm^2 among the 16 years and the decreased cropland almost converted to urban or built up. The amount of decreasing cropland from 1993 to 2001 was more than that from 1985 to 1993 in the most towns of study area. All in all, cropland decreasing was different in different places and different times, and landuse of the agriculture and other department must be supervised by the total plan of landuse in order to sustainable development.

关 键 词：TM/ETM^+ 耕地变化 驱动因素 

分 类 号：F323.211[经济管理—产业经济]