Journal of Geographical Sciences ›› 2011, Vol. 21 ›› Issue (1): 18-34.doi: 10.1007/s11442-011-0826-9

• Man-land Relationship • Previous Articles     Next Articles

The study on county accessibility in China: Characteristics and effects on population agglomeration

WANG Zhenbo1, XU Jiangang2, FANG Chuanglin1, XU Lu2, QI Yi2   

  1. 1. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China|
    2. School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing 210093, China
  • Received:2010-03-05 Revised:2010-04-28 Online:2011-02-15 Published:2011-01-13
  • Supported by:

    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

Abstract:

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.

Key words: county, spatial accessibility, population aggregation, raster cost weighted, China