喀斯特地区城镇化质量与土地利用系统健康协同演化关系研究

Co-evolution Relationship Between the Quality of Urbanization and the Health of Land Use System in Karst Regions

在城镇化过程中,城镇化质量与土地利用系统健康存在着相互联系、相互影响的耦合关系,只有当两者协调发展,才能进一步促进城镇化的协调发展。以喀斯特地区贵阳市为研究对象,在构建了城镇化质量和土地利用系统健康的评价指标体系后,分别计算了两者的综合指数,并采用耦合度模型与耦合协调模型以及剪刀差方法对两者的协调关系进行分析。研究表明:(1)城镇化质量和土地利用系统健康的综合指数大体上呈逐年上升的趋势,其中土地利用系统健康先后经历了从亚健康到初级健康再到中级健康的状态;(2)城镇化质量与土地利用系统健康的耦合度在研究期内一直处于拮抗水平,耦合协调水平先后经历了从濒临失调到勉强协调再到初级协调的状态;(3)城镇化质量与土地利用系统健康演化速率的剪刀差较为稳定,波动趋势比较平缓,贵阳市城镇化质量与土地利用系统健康这两个系统发展演化速率的差异基本维持在稳定水平。在未来应当采用促进城镇化质量与土地利用系统健康双向提升的优化路径以提高两个系统之间的耦合关系。

In the process of urbanization,there is a coupling relationship between the quality of urbanization and the health of land use system. Coordinated development between those two systems will further promote the sustainable development of urbanization. This paper takes the Karst region,Guiyang city as a case study,we calculated the composite index after building the evaluation index system of urbanization quality assessment and health of land use system,and then analyzed the coordinative relationship by using the coupling coordination model and the scissors difference method. The results showed that：（ 1） The composite index of the urbanization quality and the health of land use system showed an upward trend year by year from 2005 to 2014,which the health of land use system changed from sub-health to elementary health to intermediate health.（2） The coupling degree between urbanization quality and the health of land use system was in antagonism status during the study period,the coupling coordination had experienced the status of nearly disorder,constrainedly harmony,and primary harmony.（3） The scissors difference of evolution rate between urbanization quality and land use system health was stable,the fluctuation tendency was gentle,which showed that those two systems maintained at a steady level. Thus,it is necessary to promote the coupling relationship between those two systems by optimizing routes.