Study on Concentration and Decentralization of Population in LanzhouXining City Region Based on A Regional Density Function Approach

Huang Yongbin,Bai Yongping ,Li Jianbao

Areal Research and Development ›› 2011, Vol. 30 ›› Issue (5) : 30-35.

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PDF(1019 KB)
Areal Research and Development ›› 2011, Vol. 30 ›› Issue (5) : 30-35.

Study on Concentration and Decentralization of Population in LanzhouXining City Region Based on A Regional Density Function Approach

  • Huang Yongbin,Bai Yongping ,Li Jianbao
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Abstract

The distribution of population is of great importance to regional economic studies, which helps to reveal the characteristics and the development trends of regional spatial structure. This paper takes samples of thirty five counties in LanzhouXining city region, which is the only one comparative integrated river basin units in the northern west part of China. Exploratory spatial data analysis was used to examine the population distribution characteristics of research units, and three high population density centers were found. To make sure which regional density function is more appropriate for LanzhouXining area, firstly the gravitybased model is used to delineate the radiation scope of those three high population density centers and then the squareroot negative exponential density function is found out to be the best one in explaining the population distribution of research units. Since the monocentric regional density have limits in polycentric regions, such as LanzhouXining city region, the polycentric regional density based on the squareroot negative exponential density function is used to examine the characteristic and the development trends of concentration and decentralization of population in this area. And we find there are two different models of concentration and decentralization of population in research units, namely, the concentration pattern, such as Lanzhou downtown area and Xining downtown area, and the dispersion pattern through weaken center such as Linxia City.

Key words

concentration and decentralization of population / regional density function / LanzhouXining city region

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Huang Yongbin,Bai Yongping ,Li Jianbao. Study on Concentration and Decentralization of Population in LanzhouXining City Region Based on A Regional Density Function Approach[J]. Areal Research and Development, 2011, 30(5): 30-35

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