基于遥感的土地利用与退耕还林时空变化研究——以延河流域下游地区为例  

Landuse Changes Based on CBERS Data in Lower Reaches of Yanhe River in the Loess Plateau of China

作　　者：卫建军[1] 李新平[1] 杨勤科[1] 梁伟[1] 

机构地区：[1]西北农林科技大学资源与环境学院,陕西杨凌712100

出　　处：《水土保持通报》2007年第2期87-90,共4页Bulletin of Soil and Water Conservation

基　　金：黄河水利委员会治黄专项目(2004SZ01-04);中国科学院知识创新工程重要方向项目(KZCX3-SW-421)

摘　　要：随着退耕还林草政策的实施,我国的退耕还林工程取得了很大的成效。利用中巴卫星数据CBERS对陕北延河流域下游近10a的土地利用变化进行动态监测,并对其空间结构的变化进行了量化。研究结果表明,延河下河地区林地面积增加了8%,草地增加了20%,耕地减少了38%,并且有1.03%的耕地变为林地,57.49%的耕地变为草地。实现了对区域生态环境变化的动态监测,为黄土丘陵地区退耕还林还草、生态环境调查及动态监测提供了可行的方法。With the implementation of the policy of converting slope farmland into forest and grassland, the project has achieved great successes in China. Satellite data of CBERS are used to monitor landuse change for nearly 10 years in the lower reaches of .Yanhe River in northern Shaanxi Province, and the change in the spatial structure are quantified as well. Results show that forest was increased by 8 %, grassland was increased by 20 %, and farmland was decreased by 38 %. 1.03 % of farmland was converted into woodland, and 57.49 % of farmland, into grassland. Dynamic monitoring of changes in the region＇ s ecological environment has been achieved, and a viable way to monitor and survey ecological environment and converting slope farmland into forest and grassland in the loess hilly and gully area has been provided.

关 键 词：遥感 CBERS 土地利用变化 退耕还林草 时空变化 

分 类 号：F301.24[经济管理—产业经济] S725[农业科学—林木遗传育种]