步行是一种重要的交通方式,也是体力活动的重要组成部分。然而,现代城市居民步行频率持续下降,相应地带来体力活动水平的持续降低,伴随着肥胖等慢性非传染病广泛蔓延,值得警惕。西方很多研究证实了建成环境(常以'3D'或'5D&#...步行是一种重要的交通方式,也是体力活动的重要组成部分。然而,现代城市居民步行频率持续下降,相应地带来体力活动水平的持续降低,伴随着肥胖等慢性非传染病广泛蔓延,值得警惕。西方很多研究证实了建成环境(常以'3D'或'5D'等模型刻画)对步行行为的影响。基于西方的结论对于中国香港、北京和上海等具有与西方城市大相迥异的建成环境的城市是否适用?不同的人群由于具有不同的社会经济属性和生活节奏、习惯,其步行行为受建成环境的影响在方向、强度上是否存在差异?为解决上述问题,论文以香港为案例地,以职员和学生2类人群的步行通勤通学行为为研究对象,利用香港人口普查数据、Open Street Map数据以及中原地图数据等,采用传统的线性回归和空间计量模型进行分析,发现:①通勤通学距离是影响职员和学生步行通勤通学行为的最重要变量;②以'5D'模型刻画的建成环境对香港居民步行通勤通学行为的影响,与西方情境下的结论存在一定的差异,如,在香港,距地铁站的距离与职员和学生步行通勤比例相关性均不显著;③建成环境对步行通勤通学行为的影响,在职员与学生两类人群之间在方向和强度上存在显著差异。例如人口密度与职员步行通勤比例负相关,但与学生步行通学比例正相关。研究凸显了在'建成环境-交通行为'关系研究中情境(context)和人群区分(segmentation)的重要性。展开更多
Numerous cities are undergoing the ageing of populations.Developing a transport system that incorporates mobility needs,preferences,and demands of elderly people is crucial to such a demographic shift.Understanding th...Numerous cities are undergoing the ageing of populations.Developing a transport system that incorporates mobility needs,preferences,and demands of elderly people is crucial to such a demographic shift.Understanding the travel behavior and characteristics of elderly people is the first and foremost step towards this goal.In stark contrast with Western car-dominant places,numerous East Asian modern cities(e.g.,Hong Kong,Beijing,and Shanghai)have high levels of public transportation use.Experience gained from existing studies in the West cannot be applied to Hong Kong,a typical transit-dependent city.In light of this,based on the 2011 Travel Characteristic Survey data and Poisson and negative binomial regression models,this study identifies factors that significantly affect the number of daily trips taken by(or trip frequency of)elderly people in Hong Kong.The paper finds that both socio-demographic(e.g.,age and housing type)and built environment characteristics significantly affect the trip number of elderly people.Interestingly,it is determined that car availability does not play a significant role in the trip generation process,but public transportation accessibility truly matters.This outcome remarkably differs from findings in Western car-dominant cities.Moreover,to discern whether the elderly are a homogenous group,this study estimates separate models for the young elderly(aged between 60 and 74)and the very old(aged 75 or above).It is observed that the effect of public transportation accessibility on elderly mobility varies among elderly subgroups:public transportation accessibility significantly affects the trip frequency of the young elderly,but not that of the very old.Finally,a multitude of policy measures with the aim of upgrading elderly mobility is proposed.展开更多
文摘步行是一种重要的交通方式,也是体力活动的重要组成部分。然而,现代城市居民步行频率持续下降,相应地带来体力活动水平的持续降低,伴随着肥胖等慢性非传染病广泛蔓延,值得警惕。西方很多研究证实了建成环境(常以'3D'或'5D'等模型刻画)对步行行为的影响。基于西方的结论对于中国香港、北京和上海等具有与西方城市大相迥异的建成环境的城市是否适用?不同的人群由于具有不同的社会经济属性和生活节奏、习惯,其步行行为受建成环境的影响在方向、强度上是否存在差异?为解决上述问题,论文以香港为案例地,以职员和学生2类人群的步行通勤通学行为为研究对象,利用香港人口普查数据、Open Street Map数据以及中原地图数据等,采用传统的线性回归和空间计量模型进行分析,发现:①通勤通学距离是影响职员和学生步行通勤通学行为的最重要变量;②以'5D'模型刻画的建成环境对香港居民步行通勤通学行为的影响,与西方情境下的结论存在一定的差异,如,在香港,距地铁站的距离与职员和学生步行通勤比例相关性均不显著;③建成环境对步行通勤通学行为的影响,在职员与学生两类人群之间在方向和强度上存在显著差异。例如人口密度与职员步行通勤比例负相关,但与学生步行通学比例正相关。研究凸显了在'建成环境-交通行为'关系研究中情境(context)和人群区分(segmentation)的重要性。
基金supported by grants from the National Natural Science Foundation(No.51778530)the National Natural Science Foundation(No.18BZZ044)the Department of Science and Technology of Sichuan Province(No.20RKX0748).
文摘Numerous cities are undergoing the ageing of populations.Developing a transport system that incorporates mobility needs,preferences,and demands of elderly people is crucial to such a demographic shift.Understanding the travel behavior and characteristics of elderly people is the first and foremost step towards this goal.In stark contrast with Western car-dominant places,numerous East Asian modern cities(e.g.,Hong Kong,Beijing,and Shanghai)have high levels of public transportation use.Experience gained from existing studies in the West cannot be applied to Hong Kong,a typical transit-dependent city.In light of this,based on the 2011 Travel Characteristic Survey data and Poisson and negative binomial regression models,this study identifies factors that significantly affect the number of daily trips taken by(or trip frequency of)elderly people in Hong Kong.The paper finds that both socio-demographic(e.g.,age and housing type)and built environment characteristics significantly affect the trip number of elderly people.Interestingly,it is determined that car availability does not play a significant role in the trip generation process,but public transportation accessibility truly matters.This outcome remarkably differs from findings in Western car-dominant cities.Moreover,to discern whether the elderly are a homogenous group,this study estimates separate models for the young elderly(aged between 60 and 74)and the very old(aged 75 or above).It is observed that the effect of public transportation accessibility on elderly mobility varies among elderly subgroups:public transportation accessibility significantly affects the trip frequency of the young elderly,but not that of the very old.Finally,a multitude of policy measures with the aim of upgrading elderly mobility is proposed.
