2000-2012年中国地级以上城市空间弹性分析

发布时间：2018-08-25 15:15

【摘要】：中国快速城镇化进程中土地城镇化与人口城镇化的不协调导致城市土地蔓延、集约程度低,研究城市土地的扩张速度和程度,并进行城市间的横向对比分析,对于城市增长边界划定、统筹城市空间规划具有重要意义。城市在发展过程中,城市用地面积、人口数量变化表现为城市人口密度随时间变化,一定程度上反映了城市土地的扩张程度和内部发展潜力,称之为城市空间弹性。以中国263个地级以上城市为样本,以2000-2012年间城市人口密度及其变化率为基础,采用位序评分法构建计算简便、横向可比的城市空间弹性指标。根据弹性计算结果将城市划分为高弹性、较高弹性、中等弹性、较低弹性和低弹性5个等级。中国东部地区高弹性城市占比较高、中部地区以较高弹性和中等弹性城市为主、西部地区城市弹性主要为中等以下水平。研究期内绝大多数样本城市人口密度降低,城市空间弹性增加,在2000-2006年间尤为明显。进一步结合中国五大城市群分析看出,总体上经济发达地区城市空间弹性较大,但是城市群中的核心城市弹性中等或较小。根据城市空间弹性计算结果可以更加合理确定城市增长边界划定的优先次序以及进行刚性和弹性边界的程度控制。
[Abstract]:The incoordination between land urbanization and population urbanization in the process of rapid urbanization in China leads to the spread of urban land and low intensity. The paper studies the expansion speed and degree of urban land, and makes horizontal comparative analysis among cities. It is of great significance to delimit the boundary of urban growth and coordinate urban spatial planning. In the process of urban development, the change of urban land area and population number is the change of urban population density with time, which to some extent reflects the degree of urban land expansion and internal development potential, which is called urban spatial elasticity. Based on the population density and its change rate of 263 cities in China from 2000 to 2012, a simple and comparable index of urban spatial elasticity was constructed by using the method of sequence scoring. According to the results of elastic calculation, the cities are divided into five grades: high elasticity, medium elasticity, low elasticity and low elasticity. In the eastern part of China, the urban elasticity is relatively high, the central region is dominated by the high elastic city and the medium elastic city, and the urban elasticity in the western region is mainly below the medium level. During the study period, the population density of most sample cities decreased and the urban spatial elasticity increased, especially from 2000 to 2006. The further analysis of the five urban agglomerations in China shows that the spatial elasticity of cities in the economically developed areas is large, but the elasticity of the core cities in the urban agglomerations is medium or small. According to the results of urban spatial elastic calculation, the priority of urban growth boundary delineation and the degree control of rigid and elastic boundary can be determined more reasonably.
【作者单位】：武汉大学资源与环境科学学院;
【基金】：国家自然科学基金项目(41571385)
【分类号】：F299.2

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