以北京山区水土保持与生态环境建设的三道防线划分为对象,研究建立三道防线划分的指标体系,并运用遥感(RS)、地理信息系统(GIS)、空间多准则评价(SMCE)等技术手段和定量分析方法,对北京山区进行三道防线和3种类型区域的划分,为北京山区以及547条小流域的水土流失综合防治与生态环境建设工作提供科学决策依据。 Taking the three defenses of soil and water conservation and ecological environment construction in Beijing mountainous areas as objects, this paper studies the establishment of the index system of three lines of defense and uses the technologies of remote sensing (RS), geographic information system (GIS) and space multiple criteria evaluation (SMCE) Means and quantitative analysis method to divide the three defensive lines and three types of areas in Beijing’s mountainous areas and provide scientific decision-making basis for the comprehensive prevention and control of ecological environment and the construction of soil and water loss in Beijing’s mountainous areas and 547 small watersheds.