长江中游城市群三生功能分异性研究--基于地理探测器模型

A Study on the Differentiation of the Production-living-ecological Function of the Urban Agglomeration in the Middle Reaches of the Yangtze River-Based on the Geo-detector Model

面对快速城镇化带来的资源环境压力,促进三生功能均衡协调发展、优化国土空间布局成为经济可持续发展的重要课题。文章利用国土空间三生指标评价体系测度长江中游城市群31个城市2014年和2017年的三生功能值,探讨三生功能时空分异特征,并用地理探测器模型分别研究三生功能空间分异的驱动因素及其动态变化,得出如下结论:(1)长江中游城市群三生功能具有明显的空间分异特征,生产功能高值区呈现出由点状分布向集群分布的发展趋势;生活功能高值区南移;生态功能值分布呈现出南高北低的空间特征,但南北差距在缩小。(2)研究期内,影响生产功能分异的主导因素由经济总量指标变为对外贸易指标;影响生活功能分异的主导因素由宏观经济质量指标转化为微观生活质量指标;自然因素对生态分异的影响作用在减弱。(3)任何两种因素对三生功能空间分布的交互作用都要大于一种因素的单独作用;有些自身对分异没有显著影响的因子,在交互作用之后影响力显著增强。

Facing on the pressure of resources and environment brought by rapid urbanization,promoting the balanced and coordinated development of the production-living-ecological function,and optimizing the layout of the territorial space have become important issues for the economic sustainable development.This article uses the production-living-ecological index evaluation system of territorial space to measure the production-living-ecological function values of 31 cities of the urban agglomeration in the middle reaches of the Yangtze River in 2014 and 2017,also,this article discusses the characteristics of the spatial and temporal differentiation of the production-living-ecological functions,and uses the geo-detector model to study the the driving factors and dynamic changes of spatial differentiation of the production-living-ecological functions,the results show that:(1)the production-living-ecological function of the urban agglomeration in the middle reaches of the Yangtze River had obvious spatial differentiation characteristics,and the high-value areas of production functions showed a development trend from dotted distribution to cluster distribution;the high-value areas of living functions moved to the south;the distribution of ecological function value presented a spatial characteristic of high in the south and low in the north,but the gap between the north and the south was narrowing.(2)During the study period,the dominant factor affecting the differentiation of production functions changed from economic aggregate indicators to foreign trade indicators;the dominant factors affecting the differentiation of living functions were transformed from macroeconomic quality indicators to micro life quality indicators;the influence of natural factors on ecological differentiation was weakening.(3)The interaction of any two factors on the spatial distribution of the production-living-ecological function was greater than the single effect of one factor;some factors which had no significant effect on differentiation,however,after the interaction,the influence was significantly enhance.