粤港澳大湾区城市群城镇用地扩张时空演变特征分析

【作者】 王佳煜； 陈天；

【机构】 天津大学；

【摘要】 新型城镇化背景下,厘清城镇用地扩张模式与特征对于城市群的高质量发展具有重要意义。由于长期粗放型的城镇空间高速扩张模式,城市群往往面临复杂的人地矛盾,一方面因追求城市群经济高速增长而不断向外拓展城镇用地,另一方面囿于紧张的土地资源,城镇用地不断挤占生活、生态空间。本文以粤港澳大湾区城市群为例,对城市群2000-2020年的城镇用地扩张演变特征进行分析。通过对城市群整体扩张强度、扩张形态以及城市群各城市间扩张强度差异与综合引力的分析,总结粤港澳大湾区城市群近二十年的城镇用地扩张规律,结果表明:(1)2010-2020年,粤港澳大湾区进入城镇化高速发展阶段,但不同城市间的扩张强度存在较明显差异,总体呈现不均衡的城镇用地扩张格局;(2)粤港澳大湾区城镇用地扩张形态符合"扩散-集聚"的城市增长理论,由多样化的用地扩张形态转变为以边缘扩张型为主导的扩张形态;(3)粤港澳大湾区的综合引力在空间分布上存在着明显的短板,广-佛与深-港两大核心增长极的辐射带动作用并未能发挥至外圈层城市,亟待探索优势互补的城市群一体化发展路径。更多还原

【Abstract】 Under the background of new urbanization,clarifying the mode and characteristics of urban land expansion is of great significance for the high-quality development of urban agglomerations.Due to the long-term extensive and rapid expansion of urban space,urban agglomerations are often faced with complex conflicts between people and land.On the one hand,urban agglomerations continue to expand the urban land in pursuit of rapid economic growth.On the other hand,construction land constantly crowding out living and ecological space.Taking the urban agglomeration of Guangdong-Hong Kong-Macao Greater Bay Area(GBA) as an example,this paper analyzes the evolution characteristics of urban land expansion in the urban agglomeration from 2000 to 2020.Through the analysis of UEI,UEDI,LEI and CGI,the law of urban land expansion in the GBA urban agglomeration in the past two decades is summarized.The results show that:(1) 2010-2020,the GBA entered a stage of rapid urbanization development,but there are obvious differences in the expansion intensity among different cities,and the overall pattern of urban land expansion will be unbalanced;(2) The form of urban land expansion in the GBA in line with the urban growth theory of "diffusion-aggregation",it has changed from a diversified land use expansion pattern to an expansion pattern dominated by marginal expansion;(3) The comprehensive gravity of the GBA has obvious short board in spatial distribution.The two core growth poles of Guangzhou-Foshan and Shenzhen-Hong Kong have not been able to play their leading role in the radiation and driving of the outer circle of cities.It is urgent to explore the integrated development path of urban agglomerations with complementary advantages.更多还原