关中平原城市群土地集约利用与生态文明建设耦合性研究

Research on Coupling of Intensive Land Use and Ecological Civilization Construction of Urban Agglomeration in Guanzhong Plain

土地集约利用和生态文明建设的协调发展对促进城市土地合理利用和可持续发展具有重要意义。采用熵权法——PSR模型对2009—2018年关中平原城市群的土地集约利用水平及生态文明建设程度构建指标体系并对指数进行计算,在此基础上,分别运用耦合协调度模型和ESDA模型,分析了耦合协调度的时空格局及空间关联格局的变化趋势。结果表明:(1)土地集约利用水平呈平稳上升趋势,多数城市出现波动;生态文明建设程度总体呈波动上升趋势,2014年有所下降;(2)时间上耦合协调度经历了"基本协调发展→良好协调发展"的过程,空间分布格局总体朝着协调方向发展,每个城市都有所提升;(3)全局自相关表明耦合协调度在2009年和2018年存在显著的正相关,局部自相关显示空间分布有明显的聚集特征,整体显著性较强,主要表现为"H-H"和"L-L"两种类型。该研究为实现关中平原城市群的可持续发展提供理论依据。

The coordinated development of intensive land use and ecological civilization construction is of great significance for promoting the rational use and sustainable development of urban land. The entropy weight method— PSR model was used to build an indicator system and calculate the index for the intensive land use level and ecological civilization construction level of the urban agglomeration in Guanzhong Plain from 2009 to 2018. On this basis, the coupling coordination degree model and the ESDA model were respectively used to analyze the coupling coordination degree changes in the spatiotemporal pattern and spatial correlation pattern. The results show that:(1) the level of intensive land use had a steady upward trend, and most cities had fluctuations;the degree of ecological civilization construction generally fluctuated and had declined in 2014;(2) in time, the coupling coordination degree had undergone the process of ‘basic coordinated development → good coordinated development’, the spatial distribution pattern was generally developing in the direction of coordination, and each city had improved;(3) the global autocorrelation indicated that the coupling coordination degree existed significant positive correlation in 2009 and 2018, local autocorrelation showed that the spatial distribution had obvious aggregation characteristics, and the overall significance was strong, mainly manifested as ‘H-H’ and ‘L-L’. These results can provide the theoretical basis for realizing the sustainable development of the urban agglomeration in Guanzhong Plain.