成渝双城经济圈生态保护与经济高质量发展时空耦合研究

Spatiotemporal Coupling Study of Ecological Protection and High-Quality Development in Chengdu-Chongqing Economic Circle

为探明成渝双城经济圈经济高质量发展与生态保护的耦合关系,促进区域的可持续发展。构建生态保护与经济高质量发展2个系统、8个维度共计33个指标的综合评价指标体系,利用熵权TOPSIS模型测算成渝双城经济圈2010-2020年生态保护与经济高质量发展指数。结合耦合协调度模型分析2个系统间的耦合协调关系以及时空格局演变特征,运用相对发展度模型与变异系数法进一步探明二者的相对发展程度与区域差异。结果表明:①成渝双城经济圈生态保护水平呈“快速增长—短暂回落—稳步提升”的趋势,发展指数由0.448提升至0.585,空间上呈连片状的优化格局;②经济高质量发展水平呈现持续增长的态势,发展指数由0.317提高至0.509,逐渐形成“两极独大,中部提升”空间分布特征;③成渝双城经济圈整体耦合协调性持续向好,协调水平由初级协调上升至中级协调,呈“两核一带”协调并进的地理空间特征;④区域内75%城市实现生态保护与经济高质量发展的协调并进,城市间发展差距逐渐缩小。在未来区域一体化的进程中需筑牢长江上游生态保护屏障,着力提升地区经济高质量发展水平,培育发展区域创新型产业,促进经济高质量发展与生态保护水平双效提升,实现经济社会与生态环境的可持续发展。

In order to explore the coupling relationship between high-quality economic development and ecological protection in Chengdu-Chongqing economic circle,and to promote the sustainable development,this paper constructs a comprehensive evaluation index system with two systems of ecological protection and high-quality economic development and 33 indicators in 8 dimensions,and calculates development index from 2010 to 2020 by using the entropy right TOPSIS model.Combined with the coupling coordination degree model,the coupling system and the evolution characteristics of the spatial and temporal pattern were analyzed,and then the relative development degree and the coefficient of variation method were further proved by the relative development degree and the coefficient of variation.The results show that①The ecological protection level of economic circle shows a trend of"rapid growth-short decline-steady improvement".The development index rose to 0.585 from 0.448.The optimization pattern is continuous in space.②The level of high-quality economic development shows a sustained growth trend.The development index increased to 0.509 from 0.317.The"polar alone and central promotion"spatial distribution characteristics is gradually formed;③The overall coupling and coordination in Chengdu-Chongqing region continues to improve.The level of coordination rises from primary coordination to intermediate coordination,which presents the geographical spatial characteristics of coordinated development of"two nuclear areas";④75%of the cities in the region realize the coordinated development of ecological protection and high-quality economic development.The development gap between cities is gradually narrowing.In the process of regional integration in the future,it is necessary to build the ecological protection barrier in the upper reaches of the Yangtze River,strive to improve the high-quality development level of the region,cultivate and develop regional innovative industries,promote the improvement of high-quality development and ecological protection level,and realize the sustainable development of economic society and ecological environment.