土地利用效益与城市化水平耦合协调时空关系研究——以云南省为例

Study on Spatial Temporal Relationship of Coupling Coordination between Land Use Efficiency and Urbanization Level——A Case of Yunnan Province

选取云南16个州市作为研究样本,利用熵权法构建土地利用效益与城市化水平综合评价体系,并利用相对发展度、耦合协调度模型测算土地利用效益与城市化水平的发展水平,利用空间自相关模型分析各州市土地利用效益与城市化水平关联程度,得到以下主要结论:(1)云南省各州市土地利用效益综合得分呈上升趋势,其中昆明市增幅最高,土地利用效益大幅提高;城市化水平综合得分呈波动上升趋势,且差异较大,其中昆明的波动幅度最大,曲靖的增幅最大。各州市相对发展度差异较大,2008~2015年除昆明市外,其他州市相对发展度均<1,2018年仅曲靖、丽江、普洱、怒江和迪庆相对发展度<1,其他地区均>1。(2)云南省绝大数州市土地利用效益与城市化水平的耦合度均处于高水平耦合阶段,而协调程度的变化差异较大。2018年仅昆明、曲靖、玉溪3个州市分别处于良好协调、中级协调、勉强协调阶段,其他各州市均处于濒临失调阶段。(3)云南省各州市土地利用效益与城市化水平具有一定的全局空间关联性。不同州市、不同时间的局部空间自相关差异显著类型不同,昆明、昭通、丽江、楚雄、红河、文山、德宏表现在不同时间段显著聚集,其他州市在4个时间段协调度的局部空间自相关均表现为聚集不显著。并提出云南省各州市要加大推动土地利用效益与城市化进程的均衡发展,优化耦合关系,精准施策,推进云南省各州市整体协调发展。

16 prefectures and cities in Yunnan Province were selected as the research samples,the comprehensive evaluation system of land use efficiency and urbanization level was built using the entropy weight method,the development level of land use efficiency and urbanization level were calculated using the model of relative development degree and coupling coordination degree, and the correlation degree between land use efficiency and urbanization level in each prefecture and city was analyzed using spatial autocorrelation model. The results showed that the comprehensive score of land use efficiency of each prefecture and city in Yunnan Province was on the rise,and Kunming has the highest growth rate,and the land use efficiency increased significantly. The comprehensive score of urbanization level showed a fluctuating upward trend,and the difference was large,in which Kunming had the largest fluctuation and Qujing had the largest increase. From 2008 to 2015,except Kunming, the relative development degrees of other prefectures and cities were less than 1. In 18 years,the relative development degrees of Qujing, Lijiang,Pu’er, Nujiang and Diqing were less than 1, while those of other regions were more than 1. The coupling degree of land use efficiency and urbanization level in most prefectures and cities was in a high coupling stage, but the change of coordination degree was quite different. In 2018,only Kunming,Qujing and Yuxi were in the stage of good coordination,intermediate coordination and barely coordination,while other prefectures and cities were on the verge of imbalance. There was a certain global spatial correlation between land use efficiency and urbanization level in Yunnan Province.Kunming,Zhaotong,Lijiang,Chuxiong,Honghe,Wenshan and Dehong showed significant aggregation in different time periods,while the local spatial autocorrelation of other prefectures and cities showed no significant ag-gregation in four time periods. In order to promote the overall coordinated development of Yunnan Province,it is necessary to promote the balanced development of land use efficiency and urbanization process,optimize the coupling relationship,and accurately implement policies.