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作者

Juan Lu;He Li;Ming Xu

来源

HABITAT INTERNATIONAL,Vol.130,P.102709

语言

英文

关键字

作者单位

College of Economics and Management, Nanjing Agricultural University, China;School of Management, Nanjing University of Posts and Telecommunications, China;Institute of Industrial Economics, Chinese Academy of Social Sciences, China;College of Economics and Management, Nanjing Agricultural University, China;School of Management, Nanjing University of Posts and Telecommunications, China;Institute of Industrial Economics, Chinese Academy of Social Sciences, China

摘要

Urban sprawl is becoming increasingly serious in China. Existing studies have rarely analysed its causes from the perspective of environmental change. This study investigates the impact of air pollution on urban sprawl. On the basis of the panel data of China's prefecture-level cities, an empirical test is conducted. Results indicate that in every 1% increase of PM2.5, urban sprawl increases by 0.484. The influence path result shows that air pollution aggravates urban sprawl by inducing discrete industrial distribution and decreasing labour supply, stimulating real estate developers' investment and land finance. Air pollution also inhibits urban sprawl by forcing industrial upgrading and increasing resident health demand. In addition, air pollution has a double threshold effect on urban sprawl, has no obvious effect on urban sprawl when the PM2.5 index is lower than 57.74, inhibits urban sprawl when PM2.5 is 57.74–86.8 and aggravates urban sprawl when PM2.5 is higher than 86.8. Moreover, air pollution has a spatial spillover effect on the urban sprawl of surrounding cities. As the distance between two cities is within 200 km, air pollution has a positive spillover effect; otherwise, it has a negative one. The conclusions are expected to provide suggestions on pollution control for restraining urban sprawl.