京津冀城市群环境规制强度与城镇化质量的协调性分析

城镇化与生态环境之间存在复杂的非线性耦合关系,而环境规制作为人类对环境的主动调节行为,能够对城镇化与生态环境间的协调关系产生积极影响。论文以京津冀城市群13个地级以上城市为例,以成本-效益理论和效率-水平理论为基础,分别构建环境规制强度和城镇化质量评价指标体系,结果发现：京津冀城市群环境规制强度和城镇化质量在时空格局上呈现高度吻合,两者均以京津为双峰值点,并向南北两翼梯度递减。之后,采用象限图分类识别方法对京津冀城市群环境规制强度和城镇化质量协调类型进行划分,从而判断两者协调性状况及时空演变特征,结论如下：1）京津冀城市群环境规制在一定程度上促进了城镇化质量的提升,两者相关系数为0.82,但环境规制强度和城镇化质量不协调状态同样显著,两者基本协调的样本数仅占样本总数的13%,说明正处于初级协同阶段;2）京津冀城市群环境规制强度和城镇化质量整体水平偏低,达到高水平的城市仅有北京市和天津市,但两者整体水平增强态势显著,石家庄市、唐山市等次级中心城市,以及秦皇岛市、沧州市等经济较发达城市已由低水平步入中等水平;3）京津冀城市群环境规制强度和城镇化质量协调性呈现圈层状空间格局,主要分为核心圈层、中间圈层和外围圈层3个圈层,且核心圈层协调性优于中间圈层,再优于外围圈层。

Coordination between Environmental Regulation Intensity and Urbanization Quality: Case Study of Beijing-Tianjin-Hebei Urban Agglomeration

There is a complex nonlinear coupling relation between urbanization and ecological environment. As an active human behavior to regulate the environment, environmental regulation can have a positive impact on the coordination between urbanization and the ecological environment. Therefore, calculating the coordination of environmental regulation intensity and urbanization quality can provide a scientific basis for the coordinated development between them. Based on the theory of cost-benefit and theory of efficiency-level, this paper constructs the evaluation system of environmental regulation intensity and urbanization quality, taking 13 cities of Beijing-Tianjin-Hebei Urban Agglomeration as an example. The result shows that environmental regulation intensity and urbanization quality of Beijing-Tianjin-Hebei Urban Agglomeration are highly consistent in the spatio-temporal pattern that has double peak of Beijing and Tianjin and decrease to the north and south. Then, we use quadrant method to classify the relationship between environmental regulation intensity and urbanization quality, so as to judge the coordination and space-time pattern of them. Finally, we get the following conclusions: 1) To a certain extent, environmental regulation has promoted the improvement of urbanization quality in Beijing-Tianjin-Hebei Urban Agglomeration, and the correlation coefficient between them is 0.82. However, environmental regulation intensity and urbanization quality are uncoordinated that the basically coordinated samples only account for 11% of the total samples, so it is currently in the primary phase of coordination. 2) The overall level of environmental regulation intensity and urbanization quality is low in Beijing-Tianjin-Hebei Urban Agglomeration that only Beijing and Tianjin reach a high level. However, the overall level of environmental regulation intensity and urbanization quality is increasing. Some cities have evolved from low level to medium level, such as Shijiazhuang, Tangshan, Qinhuangdao and Cangzhou. 3) The coordination of environmental regulation intensity and urbanization quality in Beijing-Tianjin-Hebei Urban Agglomeration shows a circle pattern, which is divided into the core, the middle circle and the outer circle. We can find that the coordination in the core is better than that in the middle circle and that in the middle circle is better than that in the outer circle.