1996—2008年广东省城市化进程与生态环境的协调性分析

Study on coordinative development between urbanization and eco-environment in Guangdong Province

在构建城市化和城市生态环境评价指标体系、并对广东省城市化发展水平与城市生态环境质量分别进行综合评价的基础上,将模糊数学中的隶属度引入到城市化与市生态环境协调度的计算中,并对两者协调发展程度的变化趋势进行了分析。结果发现,1996-2008年间,广东省城市综合发展与城市环境的协调度具有明显的阶段性和波动性特征,总体均呈现下降趋势;静态协调度可大体上划分为两个阶段,其中前9年均处于总体协调阶段,以1998年的静态协调度为最高,但自2005年后,两者的静态协调度逐年降低,处于不协调阶段;与静态协调发展度相比较,广东省的城市化发展与城市生态环境的动态协调度变化略为平滑。说明广东省生态环境对城市化的响应较为明显,但生态环境质量发展指数的上升滞后于城市化发展的进程。随着城市化进程的不断发展,城市化与生态环境的矛盾逐渐加剧,生态环境对城市化的约束作用逐渐增加,系统的协调性也有所下降。

AbBased on the established evaluation index systems, and corresponding comprehensive assessment of urbanization development level and ecoenvironment quality, membership function of fuzzy sets were employed to measure the coordinative degree of urbanization and ecoenvironment, and to probe its tendency. The results showed that during the year 1996-2008, coordinative degree of urbanization and ecoenvironment exhibited apparent phases and fluctuations with upward trend on the whole. Static coordinative degree might be divided into two phases： one began from 1996 to 2004, characterized by a general coordinative development stage, with a highest level in 1998; the other one started liom the year of 2005, during which static coordinative degree between urbanization and eco-environment reduced gradually till to an incongruously quality. Compared with the static coordinative degree, fluctuation of dynamic coordinative degree was smoother. It might be concluded that ecoenvironment responded to urbanization, while its evaluation index enhancement lagged behind the urbanization development. With accelerating urbaniTation, the conflict between urbanization development and ecoenvironment will intensify and constraints effects of eco-environment will be increased gradually, which may result in a decline of coordinative degree between them.