English Version
学院简介 历史沿革 机构设置 现任领导 院长寄语 历任领导 咨询委员会
学科工作 学科采风 科研工作 科研项目 博士后科研流动站
本科教学 专业学位 研究生教学 高端培训 继续教育
招生信息 专业介绍 招聘信息 职业规划 毕业生信息 毕业生去向(Placement of Graduates) EFMD国际人才网
国际交流 合作项目 国际认证 办事指南
学工在线 研究生学工
党建巡礼 学院简报 学习参考 管理制度 教工之家
校友名录 杰出校友 历史名人 MBA联合会 EMBA校友会
罗知、GuanghuaWan、ChenWang、XunZhang:Urban Pollution and Road Infrastructure: A Case Study of China

Abstract: Urban road infrastructure is crucial in affecting air pollution. Yet, little is known about the roles played by road width vs road length. This paper attempts to fill this gap by estimating the effects of road infrastructure on PM10 using city-level data from China. Our robust modeling results show that the road density index, defined as the ratio of road surface area to city territory size, is negatively correlated with PM10. More importantly, when the road width and length components of the road density variable are separately included in the regression models, the width is found to be significantly and negatively correlated with PM10, whereas the correlation with the length variable is insignificant. This is expected as increases in road width can help mitigate congestion, improve fuel efficiency, and thus reduce emissions. On the contrary, extending roads to new or unconnected areas is likely to bring more vehicles onto the roads and extend average driving time. Our findings appeal for careful consideration of the trade-off between road width (lane numbers) and road length when planning and constructing urban road infrastructure.

Keywords: Urban infrastructurePM10 pollutionRoad lengthRoad widthChina

本文已被《China Economic Review》接收且在线出版,为学院B类奖励期刊,五年平均影响因子2.008


发布时间:2017-11-16 浏览人数:
查询服务:2018普通本科生转专业成绩查询 | 本科教务系统 | 研究生教务系统 | 科研管理系统 | E科之家 | 工资查询 | 校历查询 | 电话查询 | 交通查询 | 网站管理
相关链接:《经济评论》 | 《珞珈管理评论》 | 《珞珈MBA》 | 《武汉大学EMBA》 | 康腾实践中心