长三角城市群城市宜居水平时空演化及影响因素

在新型城镇化和生态文明建设背景下,城市宜居水平日益成为人们关注的热点问题。以2004—2017年长三角城市群城市宜居要素空间数据库为基础,首先运用熵值法和Moran's I指数探讨了长三角城市群城市宜居水平时空演变特征,其次利用面板数据模型分析其宜居水平演化的影响因素。研究发现:①从宜居水平的时间演变来看,长三角城市群城市宜居水平位序变化明显且中低水平城市提升较快,城市间差距不断缩小。②从宜居水平的空间演变来看,长三角城市群城市宜居水平参差不齐且空间相关性较弱。③各城市宜居水平在单一标准层下的地域分异与综合标准层下的地域分异存在显著差异,单一标准层下各城市均有其优势与不足。④自然地理环境与区位的优劣对宜居城市建设具有直接影响,社会经济方面,人均市政设施维护建设投资额、人均住宅房地产开发投资额、年末居民储蓄存款余额及人口密度与城市宜居水平呈正相关,而工业SO2排放量与城市宜居水平呈负相关。

Spatial-Temporal Evolution of the Livability Levels in the Yangtze River Delta Urban Agglomerations and Its Influencing Factors

Under the background of new urbanization and ecological civilization construction,the city's livability levels has become a hot issue of concern.Based on the spatial database of livable elements in the Yangtze River Delta urban agglomerations from 2004 to 2017.The entropy method and Moran's I index are used to explore the temporal and spatial evolution characteristics of urban livability in the Yangtze River Delta urban agglomerations,and then the panel data model is used to analyze the influencing factors of its livability levels evolution.The study found that:1)From the perspective of the evolution of livability levels,the order of livability in the Yangtze River Delta urban agglomerations has changed significantly,and the cities in the middle and low levels have improved rapidly,and the gap between cities has been shrinking.2)From the perspective of the spatial evolution of livable level,the livable level of cities in the Yangtze River Delta is uneven and the spatial correlation is weak.3)There are significant differences between the livable level of each city under the single standard level and the comprehensive standard level.Each city under the single standard level has its advantages and disadvantages.4)The advantages and disadvantages of natural geographical environment and location have a direct impact on the construction of livable cities.In terms of social economy,the per capita investment in the maintenance and construction of municipal facilities,the per capita investment in the development of residential real estate,the balance of household savings at the end of the year and population density are positively related to the livable level of cities,while the industrial SO2 emissions are negatively related to the livable level of cities.