清水河流域1978—2010年土地利用变化时空特征  

Spatial-temporal characteristics of land use changes in Qingshui River basin from 1978 to 2010

作　　者：周秋文[1] 韦小茶 许幼霞 周旭[1] 张继[1] 梁建方 

机构地区：[1]贵州师范大学地理与环境科学学院,贵州贵阳550001

出　　处：《测绘工程》2016年第11期12-17,共6页Engineering of Surveying and Mapping

基　　金：国家"十二五"科技支撑计划课题(2012BAB02B00);贵州省科学技术基金(黔科合J字[2015]2118号);贵州师范大学博士科研启动基金

摘　　要：通过对1978年、1998年和2010年3期遥感影像目视解译获得3期土地利用数据,分析清水河流域1978-2010年土地利用变化时空特征。研究表明:清水河流域1978-2010年期间,农用地、难利用地面积持续减少,林地、建设用地面积持续增加,草地面积先有所减少后增多,除林地以外其它土地类型变化幅度后期都较前期大;流域土地利用转移方向主要是农用地转为低、中、高覆盖度草地、林地和建设用地,中覆盖度草地转为低、高覆盖度草地和林地,低覆盖度草地转为中、高覆盖度草地、林地。结果表明,近年来清水河流域水土保持措施效果明显。Land use data of three periods are interpreted from remote sensing images in 1978,1998and2010,and the spatial and temporal variation of land use in QingShui basin is analyzed.The results show that：（a）the area of arable and unused land keeps on decreasing,while forest and construction land keeps on increasing.The area of grassland decreases firstly and then gradually increases.Except for the forest land,the variation rates of all the other land use during 1998-2010 were higher than 1978-1998.（a）From 1978 to 2010,the directions of land use change in Qingshui basin have been mainly as follows：cultivated land mainly converts to low,middle,high coverage grassland,forest and building land;middle coverage grassland converts to low,high coverage grassland and forest land;and low coverage grassland converts to middle,high coverage grassland,forest and cultivated land.Results show the soil and water conservation in Qingshui Rive remains effective.

关 键 词：土地利用 水土保持 遥感 时空特征 清水河流域 

分 类 号：TP753[自动化与计算机技术—检测技术与自动化装置]