四川省资源型城市新型城镇化发展水平与生态环境压力测度及其脱钩关系研究

Study of the new-type urbanization development level and ecological environment stress measurement and the decoupling relationship between them in resource-based cities of Sichuan Province

为研究四川省资源型城市新型城镇化与生态环境压力之间的脱钩关系,本文基于熵值法和线性加权法分别测度2005—2020年四川省8个资源型城市新型城镇化发展水平与生态环境压力并分析其时空演变特征,进而利用脱钩弹性系数法剖析二者在不同时期的脱钩演变过程。结果表明2005—2020年四川省各资源型城市新型城镇化发展水平整体上呈现出波动上升的态势,新型城镇化指数均值由2005年的0.168上升到2020年的0.491,其中南充市保持领先地位,广元市则基本处于新型城镇化发展水平最低位。2005—2020年四川省各资源型城市生态环境压力波动起伏较大但总体呈现出逐渐减小的趋势,生态环境压力指数均值由2005年的0.336下降至2020年的0.121,其中攀枝花市与泸州市生态环境压力下降幅度较大,其余6个城市下降幅度较小。2005—2020年四川省资源型城市新型城镇化发展水平与生态环境压力脱钩状态经历了“强脱钩为主体-脱钩类型多样化-强脱钩为主体”的变化过程。研究结果在一定程度上可为促进四川省资源型城市绿色低碳高质量发展提供决策理论依据。

In order to study the decoupling relationship between new-type urbanization and ecological environmental stress of resource-based cities in Sichuan Province,this paper measures the development level of new-type urbanization and ecological environmental stress of eight resource-based cities of Sichuan Province from 2005 to 2020 based on the entropy method and the linear weighting method,and analyzes their spatial-temporal evolution characteristics.This paper uses the decoupling elastic coefficient method to analyze the decoupling evolution of the two in different periods.The results show that from 2005 to 2020,the development level of new-type urbanization in all resource-based cities in Sichuan Province showed an overall trend of rising fluctuation.The mean value of new-type urbanization index increases from 0.168 in 2005 to 0.491 in 2020.Nanchong City maintains the leading position,while Guangyuan City is basically at the lowest level of new-type urbanization development.From 2005 to 2020,the eco-environmental stress of resource-based cities in Sichuan Province fluctuates greatly,showing a decreasing trend in general.The mean value of ecological environment stress index decrease from 0.336 in 2005 to 0.121 in 2020.Among them,Panzhihua and Luzhou decrease greatly,while the other six cities experience a smaller decrease.From 2005 to 2020,the decoupling state of new-type urbanization development level and ecological environment stress of resource-based cities in Sichuan Province has gone through a process of"strong decoupling mainly-diversification types of decoupling-strong decoupling mainly".To a certain extent,the research results can provide a theoretical basis for decision-making to promote the green,low-carbon and high-quality development of resource-based cities in Sichuan Province.