中国县域可达性研究——特征及其对人口分布的影响(英文)

• 作 者: 王振波 徐建刚 方创琳 徐璐 祁毅
• 机 构: Institute of Geographic Sciences and Natural Resources Research,CAS; School of Geographic and O
• 出 处: Journal of Geographical Sciences
• 发表日期: 2011年01期
• 关键词: county spatial accessibility population aggregation raster cost weighted China
• 基金项目: National Natural Science Foundation of China,No.40871261;No.40971101;The Mega-project of Science and Technology Research for the 11th Five-Year Plan of China,No.2006BAJ05A06

This paper calculated spatial accessibility of all counties (city,urban district) in China with cost weighted distance method. Region divisions of county accessibility were conducted,and relation of traffic accessibility and population aggregation was discussed in this paper. The results indicated that county accessibility in China had mainly low values and a distribution structure of circle layer and reverse-to-natural gradient. There was an obvious correlation between county accessibility and population density in China. With these analyses,inner mechanisms of population migration in different traffic conditions and region types were revealed,and can provide useful proposals to regional planning,traffic planning and smart distribution of people in China.