资源科学 ›› 2020, Vol. 42 ›› Issue (3): 474-485.doi: 10.18402/resci.2020.03.06

• 专栏:黄河流域高质量发展的资源禀赋与统筹利用 • 上一篇    下一篇

黄河上游兰西城市群人口时空特征多维透视

罗君1,2, 石培基1(), 张学斌1   

  1. 1.西北师范大学地理与环境科学学院,兰州 730070
    2.甘肃农业大学资源与环境学院,兰州 730070
  • 收稿日期:2019-11-11 修回日期:2019-12-19 出版日期:2020-03-25 发布日期:2020-05-25
  • 通讯作者: 石培基
  • 作者简介:罗君,女,四川广安人,博士研究生,讲师,研究方向为人口与资源环境协调发展。E-mail: journeylj6@163.com
  • 基金资助:
    国家自然科学基金项目(41771130)

Spatiotemporal characteristics of population distribution in the upper reaches of the Yellow River:A multi-dimensional approach in the Lanzhou-Xining urban agglomeration

LUO Jun1,2, SHI Peiji1(), ZHANG Xuebin1   

  1. 1.College of Geography and Environment Science, Northwest Normal University, Lanzhou 730070, China
    2.College of Resources and Environment, Gansu Agricultural University, Lanzhou 730070, China
  • Received:2019-11-11 Revised:2019-12-19 Online:2020-03-25 Published:2020-05-25
  • Contact: SHI Peiji

摘要:

明确区域人口时空演化特征,有助于推动人口高质量集聚。本文以多源数据为基础,采用人口重心、标准差椭圆、人口分布结构指数、人口-土地一致性系数、空间自相关分析和GIS空间统计分析等方法,从城市群整体、县、乡(镇)和栅格尺度对兰州—西宁城市群人口时空特征进行分析,得出以下结论:①兰西城市群人口呈现规模小、流动性弱、城镇化水平低、人口和城镇化率小幅缓慢增长等基本特点。②人口重心略微西移,人口分布“西北—东南”走向的空间格局基本稳定,呈“核心—外围”式空间结构,兰州、西宁和临夏是3个人口集聚中心,其中兰州市显现出人口集聚的“虹吸效应”。甘青两片人口分布格局存在差异,甘肃片区人口密度中南部高、北部低,青海片区人口以西宁为中心向其他县域“圈层”递减。③海拔是影响兰西城市群人口垂直分布格局的主要地形因素,人口分布的高程梯度效应和河谷盆地集聚指向明显,人口主要集中在海拔低于2400 m的中海拔河谷盆地内。多尺度、多视角的研究结论及相应的对策建议,可为区域人口空间优化布局提供科学依据。

关键词: 人口, 时空特征, 集疏分布格局, 垂直分布格局, 黄河上游, 兰西城市群

Abstract:

Clarifying the spatial and temporal change characteristics of regional population is helpful for promoting high-quality population agglomeration. Based on the multi-source data and by using the population gravity center method, standard deviation ellipse, population structure index, population-land distribution consistency coefficient, spatial autocorrelation analysis, and GIS spatial statistical analysis, this study analyzed the spatial-temporal characteristics of population distribution in the Lanzhou-Xining (Lan-Xi) urban agglomeration at different scales (urban agglomeration, county, township (town), and grid). The results show that: (1) The scale of population of the Lan-Xi urban agglomeration is small, population mobility is limited, urbanization level is very low, and the growth rates of population and urbanization is very slow. (2) During the study period of 2000-2017, the population gravity center moved westward slightly, and the population showed a northwest-southeast distribution pattern and formatted a core-periphery spatial structure. Lanzhou, Xining, and Linxia are the three population concentration centers, and Lanzhou has the “siphon effect” of population concentration. The population distribution is higher in the central and southern parts and lower in the northern part of Gansu Province, while in Qinghai Province the population distribution decreases outward concentrically from Xining. (3) Altitude is the main topographic factor which influences the vertical distribution pattern of population. The population is mainly concentrated in the valley basins with an altitude of less than 2400 m, indicating that the vertical gradient effect and basin agglomeration are obvious. The spatial-temporal characteristics of population distribution were analyzed from different perspectives and at different scales, so that the research results and corresponding countermeasures and recommendations can provide a scientific basis for promoting the spatial layout optimization of population distribution.

Key words: population, spatiotemporal characteristics, distribution pattern of agglomerations, vertical distribution pattern, upper reaches of the Yellow River, Lanzhou-Xining (Lan-Xi) urban agglomeration