地理环境下的克鲁格曼式城市体系模拟分析

发布时间：2018-06-18 11:47

本文选题：克鲁格曼城市体系模型 + 地理空间构造　；参考：《地理科学》2013年03期

【摘要】：采用层次分析法和模糊集方法,以浙江省为研究区,构造一种能刻画地理影响程度的空间异质性的地理空间,修正克鲁格曼城市体系模型的均质空间假设,以期观察城市体系模型在经济和地理环境下的不同表现。模拟结果显示:1地理环境对模拟城市数目的波动具有持续、稳定的推动效应,但波动幅度不大,说明即使存在外生差异,城市体系演化仍旧主要靠经济系统的内生力量。2在经济或地理环境下,模拟城市的空间分布具有均衡结构,均呈现近乎对称的六边形格局。但纳入地理环境,能明显提高模拟结果与实际结果的吻合程度。3在地理环境下,4种权重模式的模拟结果各不相同。其中模拟城市的空间分布对经济权重占优模式的反应结果与真实环境比较一致,说明经济地理因素对浙江城市体系演化有较大的影响。
[Abstract]:Using the analytic hierarchy process (AHP) and fuzzy set method, taking Zhejiang Province as the study area, a kind of spatial space which can describe the spatial heterogeneity of geographical influence degree is constructed, and the homogeneous spatial hypothesis of Krugman urban system model is modified. In order to observe the different performance of the urban system model in the economic and geographical environment. The simulation results show that the geographical environment of 1: 1 has a continuous and stable driving effect on the fluctuation of the number of simulated cities, but the fluctuation is not large, indicating that even if there is an exogenous difference, The evolution of urban system still mainly depends on the endogenous force of economic system .2 in the economic or geographical environment, the spatial distribution of simulated cities has a balanced structure, and all of them show a nearly symmetrical hexagonal pattern. However, the integration of geographical environment can obviously improve the degree of agreement between the simulation results and the actual results .3 in the geographical environment, the simulation results of the four weight models are different. The response results of the spatial distribution of simulated cities to the dominant economic weight model are consistent with the real environment, indicating that the economic geographical factors have a great impact on the evolution of urban system in Zhejiang Province.
【作者单位】：河海大学地球科学与工程学院;
【基金】：国家自然科学基金(41071347) 地理空间信息工程国家测绘局重点实验室经费资助项目(201005)资助
【分类号】：K902

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