Will polycentric cities cause more CO2 emissions? A case study of 232 Chinese cities  

作　　者：Wei Sha Ying Chen Jiansheng Wu Zhenyu Wang 

机构地区：[1]Key Laboratory for Urban Habitat Environmental Science and Technology,School of Urban Planning and Design,Peking University,Shenzhen 518055,China [2]Laboratory for Earth Surface Processes,Ministry of Education,College of Urban and Environmental Sciences,Peking University,Beijing 100871,China

出　　处：《Journal of Environmental Sciences》2020年第10期33-43,共11页环境科学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China (No.41671180);the Shenzhen Technology Plan (No.JCYJ20170412150910443)。

摘　　要：From 2000 to 2010 China experienced rapid economic development and urbanization.Many cities in economically developed areas have developed from a single-center status to polycentricity.In this study,we used exploratory spatial data analysis (ESDA) to identify the population centers,which identified 232 cities in China as having urban centers.COMP was used to represent urban agglomeration,and POLYD (representing how far is the city’s sub-centers to the main center),POLYC (representing the number of a city’s centers),and POLYP (representing the population distributed between the main center and the sub-centers) were used to indicate urban polycentricity.Night light data were used to determine the CO2 emissions from various cities in China.A mixed model was used to study the impact of urban aggregation and polycentric data on the CO2 emission efficiency in 2000 and 2010.The study found that cities with higher compactness were distributed in coastal areas,and the cities with higher multicentricity were distributed in the Yangtze River Delta and Shandong Province.The more compact the city was,the less conducive it was to improving CO2 emission efficiency.Polycentric development of the city was conducive to improving the CO2 emission efficiency,but the number of urban centers had no significant relationship with the CO2 emission efficiency.Our research showed that the compactness and multicentricity of the city had an impact on the CO2 emission efficiency and provided some planning suggestions for the low carbon development of the city.

关 键 词：CO_2 emission efficiency POLYCENTRICITY COMPACTNESS Chinese cities 

分 类 号：X321[环境科学与工程—环境工程] TU984.115[建筑科学—城市规划与设计]