Delimitating Central Areas of Cities Based on Road Density:A Case Study of Guangzhou City
The central area of a city is an important functional unit in many urban studies.It is a region where business concentrates and municipal facilities densely distribute.Traditionally,statistics of economic and social phenomena can be used to delimitate their boundaries.However,traditional methods based on economic and social investigation are labor-intensive and sometimes inaccurate.Alternatively,road networks acting as a kind of infrastructure reflect the association of locations.Thus the concentration of road networks indicates the congestion of social-economic activities and municipal facilities to some extent.Based on density analysis of road networks,the area where roads densely distribute is recognized as the central area of a city.Taking Guangzhou City as an example,the road network was studied on a set of spatial scopes,and the central area was delimitated and analyzed.Results showed that the road-density-based delimitation had to be adjusted according to the road system,and the delimitated area was consistent to the real central area to some extent.Since road data is much accessible,road-based method is useful and practical when short of socialeconomic data.
Central areas of cities Central business district Road network Kernel Density Estimation
Qingnian Zhang Xueqiu Lu
School of Geography and Planning,Sun Yat-sen University 135 West Xingang Road,Guangzhou,China
国际会议
第16届国际地理信息科学与技术大会(16th International Conference on GeoInformatics and the Joint Conference)
广州
英文
2008-06-28（万方平台首次上网日期，不代表论文的发表时间）