基于投影寻踪法的城镇化质量与经济发展协调性研究——以西部城市群为例

Coordination between urbanization quality and economic development based on projection pursuit method——Taking the western urban agglomeration as an example

为克服现有城镇化质量与经济发展之间评价存在的主观性不强、不易处理高维数据等缺陷,本研究采用基于遗传算法的投影寻踪模型、耦合协调模型和空间自相关模型等方法,通过构建西部城市群内37个地级及以上城市城镇化质量与经济发展水平之间的综合评价指标体系,分析2005—2019年西部城市群内各城市城镇化质量与经济发展之间的耦合协调程度.研究结果表明:(1)2005—2019年期间,西部城市群内各城市城镇化质量、经济发展水平以及两系统间耦合协调度呈上升趋势;(2)两系统间耦合协调度的空间分布格局为南北方向上由南向北平滑上升和东西方向的“U型”;(3)全局莫兰指数呈“V型”态势演变.西部城市群城镇化质量与经济发展水平在市域之间的差异呈现出收敛的态势,两系统间耦合协调度在空间分布上表现出显著的正相关性,但局部地区并未表现出集聚特征.

In order to overcome the shortcomings of the existing evaluation between urbanization quality and economic development,such as the weak subjectivity and the difficulty in handling high-dimensional data,the projection tracing model based on genetic algorithm,the coupling coordination model and the spatial autocorrelation model are used to analyze the urbanization quality and economic development level of 37 cities at prefecture level and above within the western urban agglomeration from 2005 to 2019 by constructing a comprehensive evaluation index system between the urbanization quality and economic development level of these cities.The coupling and coordination degree between urbanization quality and economic development of each city in the western urban agglomeration.The results of the study show that(1)the urbanization quality,economic development level and the coupling coordination degree between the two systems of cities in the western urban agglomeration show an increasing trend during the period from 2005 to 2019.(2)The spatial distribution pattern of the coupling coordination degree between the two systems forms a smooth increase from south to north in the north-south direction and a“U-Shape”in the east-west direction.(3)The global Moran index evolves in a“V-Shaped”trend.The differences between the urbanization quality and economic development level of the western urban agglomerations show a convergence trend;the coupling coordination degree between the two systems shows a significant positive correlation in spatial distribution,but the local areas do not show the characteristics of agglomeration.