摘要
通过对2000TM影像进行解译，采用GIS技术，将DEM生成坡度与坡向图，对三江源并流区土地利用／覆被分布现状格局进行了研究。结果表明：本区草地占主导地位，其次是林地，耕地与建设用地面积只占很少比例；耕地主要分布在海拔2900～3400m的平地；林地主要分布在海拔3400～4200m、大于25°的阴坡，草地主要在海拔3800～4500m范围内均匀分布；建设用地主要分布在海拔3400～4200m的平地；未利用地主要分布在海拔3400m以上、大于25°的区域。
Based on GIS technique, the pattern of land use and land cover in three parallel areas is analyzed, using the interpretation result of 2000＇s TM images and the slope and aspect maps derived from DEM. The result indicates., grassland is dominated in this area and woodland is in the second place, but the area of cultivated land and construction land only take few proportions. The cultivated land is mainly distributed in northern slope of mountains at the altitude of 2 900 to 3 400 m above sea level and the meadow is distributed evenly within the range of 3 800 to 4 500 m above sea level. At the same time,construction land is mainly located in plain land at the level between 3 400 and 4 200 m above sea level and unused land mostly lies in the place with the slope more than 25 degrees and elevation above 3 400 m.
出处
《水土保持研究》
CSCD
北大核心
2006年第6期156-158,162,共4页
Research of Soil and Water Conservation
基金
科技部攻关项目:(k003020282)
