欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
以兰州—西宁城市区域县级行政单元三普四普五普以及2009年人口数据为依托,运用探索性空间数据分析技术研究了兰州—西宁城市区域人口分布,发现该区域存在3个人口高密度中心。根据单中心密度函数与多中心密度函数拟合结果的比较,发现采用基于平方根负指数模型的多中心区域密度函数能够很好地阐述研究区域的人口集聚与扩散。研究发现,区域内存在两种人口集聚与扩散模式,兰州城区与西宁城区呈现出向心集聚的特征,而临夏市则为弱中心式扩散。
英文摘要：
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.
同期刊论文项目
同项目期刊论文
期刊信息
位置：