基于移动窗口与MCR模型的建设用地适宜性评价——以武汉市江夏区为例

Suitability Evaluation of Urban Construction Land in Jiangxia District of Wuhan City Based on Moving Window and MCR

在快速城市化的背景下,城市建设用地持续增长,但是城市土地资源的有限性要求城市土地必须合理利用与开发.以武汉市江夏区为研究对象,基于Arc GIS、Fragstats软件平台,采用移动窗口与MCR模型相结合的方法,将景观指标与建设用地适宜性评价因子相融合,较为科学地为为MCR模型提供建设用地扩展源地,并对研究区2006、2013年建设用地适宜性进行评价,采用叠加分析对结果进行有效性分析并生成扩展预警点,最后利用Hydrology扩展模块生成建设用地适宜扩展路径、生态隔离带以及生态关键点,为城市建设用地发展方向提供科学依据.研究结果表明:将景观指标与MCR模型有效地结合,从点、线、面出发进行建设用地适宜性评价,尝试用更为科学的方法引导出城市建设用地合适的扩展方向,可为城市建设用地的科学发展与合理规划提供参考依据.

In the context of rapid urbanization, urban construction land continues to grow, but the limited nature of urban land resources requires that urban land should be rationally utilized and exploited. Based on the ArcGIS and Fragstats software platform,this paper combines the moving window and the MCR to integrate the landscape index and the evaluation factor of construction land suitability, and provide a sci-entific basis for MCR construction Land use,and evaluate the suitability of construction land in the study area in 2006 and 2013.The superposition analysis is used to analyze the result and generate the extended warning point.Finally,The hydrology extended module is used to determine suitable expansion paths,eco-logical isolation zones and key points of ecology that can provide the scientific basis for the development direction of urban construction land.The results of the study show that the method proposed in this paper can provide reference for scientific development and reasonable planning of urban land use, for it com- bines the landscape index with MCR to evaluate the suitability of the construction land from the point, line and surface and tries to use the more scientific method to guide the suitable extension direction of ur-ban construction land.