摘要
基于ArcGIS空间分析平台和ERDAS空间建模平台,利用水土流失综合指数法,分别以坡度、植被覆盖度和土地利用类型为主要背景因子,分析了北京市妫水河流域水土流失的空间背景特征.结果表明,妫水河流域水土流失的空间背景特征是缓坡、低植被覆盖度和疏林灌草地,而这些特征正是妫水河流域山前洪冲积扇地区的主要特点,缓坡、低植被覆盖度(不考虑城市建成区)和疏林灌草地也主要集中在流域内山前洪冲积扇地区.并提出防治妫水河流域水土流失的有效措施.
On the platform of ArcGIS analysis and ERDAS spatial modeler, the spatial characteristics of soil erosion in Guishui River watershed were analyzed. The factors of slope, vegetation coverage and land use are selected as main ecological background factors and the soil erosion intensity index （SEI） is chosen as the integrative method. The results show that mild slope, low vegetation coverage and sparse forest, which are exactly the characteristics of the piedmont alluvial fan areas, are the spatial background of the soil erosion. The mild slope, low vegetation coverage （excluding urban constructed areas） and sparse forest are mainly within the piedmont alluvial fan areas in the watershed. The effective protection measures were finally put forward.
出处
《环境科学研究》
EI
CAS
CSCD
北大核心
2006年第3期52-55,共4页
Research of Environmental Sciences
