基于空间区位条件的城市扩展生态阻力面模型及应用

从土地供给角度建立城市扩展模型,可以为城市扩展模拟研究提供有效补充。城市扩展生态阻力面模型是这一领域的新进展,在最小累积阻力面模型的基础上增加了绝对生态约束和扩展源等级的改进。在城市扩展生态阻力面模型的基础上,进一步加入了城市空间区位条件因素,包括城市间空间相互作用和道路交通条件两项因子,以反映其对城市空间扩展的影响。从而构建了综合考虑城市扩展的推力、阻力和外部吸引力的城市扩展模型。以新疆玛纳斯县城及其周边区域为例,利用构建的模型进行实证研究。结果表明,改进的模型取得了较好的应用效果,反映了城市扩展的推力、阻力和外部吸引力的综合作用,为城市扩展模拟提供了新方法。

The urban expansion ecological resistance surface model incorporated with spatial locational conditions and its application

Urban expansion modeling from the perspective of land supply is an effective supplement to the research field of urban expansion simulation. A recent progress in this field is the urban expansion ecological resistance surface model, which improves the classical minimum cumulative resistance model by incorporating absolute ecological constraints and multi-level expansion sources. In this study, the urban expansion ecological resistance surface model is further incorporated with two types of spatial locational conditions, i.e. the inter-city spatial interaction and road condition. In this way, the impacts of the spatial locational conditions on urban expansion can be integrated into the simulation. The model is applied in a case study of the county seat and surrounding area of Manas county in Xinjiang. The results show that the improved urban expansion ecological resistance surface model performs well in empirical application. The results reflect the comprehensive impacts of the driving forces, resistance forces, and external attraction forces on urban expansion. The improved model proves to be a scientific method for urban expansion simulation from the perspective of land supply.