长江经济带生态效率时空格局演化及影响因素研究

A study on the evolution of spatial and temporal patterns of eco-efficiency in the Yangtze River economic belt and its influencing factors

文章基于108个城市2004—2014年市级面板数据测度了长江经济带城市生态效率的时空演变格局,综合而言,长江经济带生态效率水平呈现出波动上升态势,长江流域城市生态效率分化特征明显,湖南、湖北和四川等长江上游城市生态效率较高,长江上、中、下游地区城市生态效率依次递减。对生态效率的影响因素研究表明,科技创新显著地提高了长江经济带的生态效率,经济快速增长降低了城市生态效率,意味着转变经济增长方式、加快科技创新是提高城市生态效率的有效途径。研究还发现,产业结构偏离度有利于提高城市生态效率,而产业升级抑制了城市生态效率的增长,意味着产业升级并不是提高城市生态效率的捷径。

Based on the cityscape data of 108 cities from 2004 to 2014,the paper analyzes the spatial and temporal pattern of urban eco-efficiency in the Yangtze River economic zone.In conclusion,the ecological efficiency level of the Yangtze River economic belt shows a fluctuating trend,and the urban ecological efficiency differentiation characteristics of the Yangtze River Basin are obvious.The ecological efficiency of the upper reaches of the Yangtze River in Hunan,Hubei and Sichuan is higher,and the urban ecological efficiency of the upper,middle and lower reaches of the Yangtze River is decreasing.The research on the influencing factors of ecological efficiency shows that technological innovation has significantly improved the ecological efficiency of the Yangtze River economic belt.The rapid economic growth has reduced the ecological efficiency of the city,which means that changing the mode of economic growth and accelerating scientific and technological innovation is an effective way to improve the ecological efficiency of the city.It is found that industrial structure deviation is beneficial to the improvement of urban ecological efficiency,and industrial upgrading restrains the growth of urban ecological efficiency from the rationalization of industrial structure and the construction of industrial upgrading index.This also means that industrial upgrading is not a shortcut to improving urban eco-efficiency.