基于CA非均质性邻接关系的城市扩张模拟

发布时间：2018-04-24 22:05

本文选题：元胞自动机 + 空间依赖性　；参考：《浙江大学学报(工学版)》2017年11期

【摘要】：针对传统元胞自动机(CA)均质性邻接关系的假设条件,提出非均质性CA模型(HA-CA),通过引入基准地价等要素将邻域元胞的空间异质性融入模型.研究采用Python脚本语言分别构建了传统CA与HA-CA模拟算法,实例研究显示:基准地价的引入使得模拟精度等到提升,且HA-CA模拟的城市用地扩张更趋近于中心城区周边分布,布局更加符合城市的发展方向,而仅考虑数量而不考虑城镇建设用地质量差异的传统CA模型,在面临多等级城市扩张模拟时会面临"失效"的可能.此外,不同建设用地类型转换机制上的差异是CA模拟结果与实际情形存在出入的重要原因,基于基准地价的HA-CA更适用于模拟住宅和商业用地扩张.
[Abstract]:Aiming at the hypothetical condition of the homogeneity adjacency of traditional cellular automata (CA), a heterogeneous CA model (HA-CAA) is proposed. The spatial heterogeneity of neighborhood cells is incorporated into the model by introducing elements such as standard land price and so on. The traditional CA and HA-CA simulation algorithms are constructed by using Python script language. The example shows that the introduction of benchmark land price makes the simulation accuracy to be improved, and the HA-CA simulation of urban land expansion is closer to the peripheral distribution of the central urban area. The layout is more in line with the development direction of the city, and the traditional CA model, which only considers the quantity and does not consider the difference in the quality of urban construction land, will face the possibility of "failure" in the face of multi-grade urban expansion simulation. In addition, the difference in conversion mechanism between different construction land types is an important reason for the discrepancy between the CA simulation results and the actual situation. The HA-CA based on the standard land price is more suitable for simulating residential and commercial land expansion.
【作者单位】：浙江大学土地管理系;
【基金】：国家社会科学基金重点资助项目(14AZD124) 国家自然科学基金资助项目(41671533) 中央高校基本科研业务费资助项目
【分类号】：F299.27

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