中原经济区城市化与生态环境空间耦合分析

Analysis of Spatial Coupling of Urbanization and Ecological Environment in Central Plains Economic Region (CPER)

城市化系统与生态环境系统是城市经济发展的重要组成要素,二者之间存在着复杂的耦合关系.基于中原经济区32个地级市的城市化相关数据及生态环境指标,运用"PSR"模型构建了城市化与生态环境耦合评价指标体系,利用城市化与生态环境耦合度函数模型及耦合协调度模型,对中原经济区城市化与生态环境空间耦合度及耦合协调度进行了分析.结果表明:1)大部分地市城市化与生态环境空间耦合度处于磨合和高水平耦合阶段;空间耦合协调度分别为:低度协调耦合占21.88%,中度协调耦合占65.62%,高度协调耦合占12.5%.2)城市化与生态环境空间耦合强度和空间耦合协调度情况为:高强度中协调性的城市占31.25%,中强度中协调性城市占34.38%.3)城市化与生态环境耦合度与各地市的经济发展水平存在一定的空间对应关系,而耦合协调度与各地市的经济发展水平没有明显的对应关系.

The systems of urbanization and ecological environment are important components in urban eco-nomic development, and the two have interaction relationship. Based on relevant data of 32 cities in CPER, in-dex system of integrated Index about urbanization and ecological environment is established. Coupling and cou-piing coordinative degree of urbanization and ecological environment of CPER are evaluated by coupling modeland coupling coordinative degree model of urbanization and ecological environment are constructed. The resultsare shown as follows ： 1. Most spatial coupling of urbanization and ecological environment of CPER is in breakingin stage and high - grade stage ; and spatial coupling coordinative degree is that 21.88 percent is coupling of low- grade coordinating, 65.62 percent coupling of moderate - grade coordinating, 12.5 percent of them is high -grade coordinating. 2. Coupling and coupling coordinative degree of urbanization and ecological environment areto a certain extent corresponding： 31.25 percent of them is high strength and moderate - grade coordinating ,and 34.38moderate strength and moderate - grade coordinating. 3. There is obvious relationship between cou-piing of urbanization and ecological environment and economic development , but there is no obvious relationshipbetween the coupling coordinative degree and economic development.