广西城市土地集约利用与生态文明建设耦合时空分异

Spatiotemporal Differentiation of Coupling the Intensive Use of Urban Land and the Construction of Ecological Civilization in Guangxi

为了分析广西城市土地集约利用与生态文明建设耦合协调程度及其时空规律,以广西为研究对象,采用TOPSIS模型开展2008-2017年城市土地集约利用与生态文明建设综合评分,并利用耦合协调模型测度了两者耦合协调水平。结果表明:(1)广西城市土地集约利用水平与生态文明建设成效综合评分呈波动式上升趋势,城市之间差异明显;(2)广西城市土地集约利用与生态文明建设耦合协调性逐渐提高,各市由中低度协调发展转向中高度协调发展并以中度协调发展为主,协调类型呈现由片状分布向线性排列的空间演变特征;(3)广西各市城市土地集约利用与生态文明建设之间以同步发展型为主,部分城市两个子系统之间发展差异呈逐步缩小态势;(4)广西城市间的协调性呈弱相似随机分布状态,空间集聚效应不断减弱,空间分异愈加突出,桂林市和梧州市成为区域极化两翼。协同推进城市土地集约利用和自然生态修复工作是实现城市土地集约利用与生态文明建设高水平耦合协调发展的重要路径。

In order to analyze the degree of coupling and coordination between the intensive use of urban land and the construction of ecological civilization in Guangxi and its spatiotemporal law,we took Guangxi as the research sample,TOPSIS model was used to evaluate the relationship between the two from 2008 to 2017,and coupling coordination model was used to measure their coupling coordination level.The results show that:(1)a fluctuating upward trend was shown in the comprehensive scores of urban land intensive use and ecological civilization construction with obvious differences among cities;(2)the coupling degrees of cities was mainly moderate coordination changing from low-level coordination to medium-highly coordinated development,with the characteristics of spatial evolution from sheet distribution to linear arrangement;(3)the intensive use of urban land and the construction of ecological civilization in the cities of Guangxi,in which the differences between the two subsystems were gradually narrowing,were mainly the synchronous development type;(4)the coordination showed a somewhat similar random distribution state,the spatial agglomeration effect was weakening,and the spatial differentiation become more prominent,Guilin City and Wuzhou City became the wings of regional polarization.Collaborative promotion of urban land intensive use and natural ecological restoration are important ways to achieve high-level coupling and coordinated development of urban land intensive use and ecological civilization construction in Guangxi.