Abstract: The research seeks to develop a land use ecological security pattern for the Jungar Banner in Ordos, which is a typical farming-pastoral zone with great vulnerability. The spatial-temporal dynamic change of land use during the past 30 years is analyzed firstly with physical geographical information, socio-economic statistics and multi-year land use data. Then the Minimum Cumulative Resistance (MCR) model is employed to build the suitability map of curial land use forms with GIS technology. Through judging the suitability for different land use forms from one land use unit to another, regional land use ecological security pattern is developed, which provides the basis for the management. This research extends the application of MCR models as well as its result is significant for regional sustainable land use.

Key words: land use pattern, ecological security, MCR, farming-pastoral zone, Jungar Banner

摘要： 选择位于农牧交错带的鄂尔多斯市准格尔旗, 基于自然地理情况、社会经济统计及多年土地覆被数据, 在对研究区近30年来土地利用时空动态变化进行分析的基础上, 运用GIS空间分析技术, 借用最小累积阻力模型, 对区域内关键土地利用类型进行分析与模拟, 判断各土地单元针对关键土地利用类型的适宜度, 据此构建区域土地利用生态安全格局, 进而提出土地利用安全格局实施和管理的建议。研究结果对区域土地资源的持续利用具有重要的指导意义, 并对最小累积阻力模型的应用进行了扩展。

关键词: 土地利用格局, 生态安全, 最小累积阻力模型(MCR), 农牧交错带, 准格尔旗