摘要
运用GIS空间统计工具,将贵州省内五千亩以上耕地坝区2000—2020年共计21期WorldPop人口数据进行分析,定量揭示了贵州省五千亩以上耕地坝区21年来的人口分布时空格局及其变化特征。结果表明,贵州省耕地坝区人口呈先增后减的趋势,按人口增长曲线特征可以划分为稳定增长期(2000—2006年)、快速波动增长期(2006—2010年)、快速负增长期(2010—2015年)以及缓慢下降期(2015—2020年)4个阶段,总体下降了0.99万人,其中五千亩耕地坝区上升了0.94万人,万亩耕地坝区下降了1.93万人;五千亩以上耕地坝区人口分布以较低密度聚集区与低密度聚集区为主,人口分布差异较明显;人口密度的空间相关性总体上表现为无明显差异,在局部表现为HH集聚、LL集聚和HL集聚;坝区人口重心迁移幅度较小,经向变化和纬向变化均呈往复移动的趋势。
The GIS spatial statistical tool was used to analyze the population data of 21 WorldPops in the arable land dam area of more than 5000 mu in Guizhou Province from 2000 to 2020,and the spatial and temporal pattern and change characteristics of population distribution in the arable land dam area of more than 5000 mu in Guizhou Province in the past 21 years were quantitatively revealed.The results showed that the population of arable land dam area in Guizhou Province showed a trend of increasing first and then decreasing.According to the characteristics of the population growth curve,it could be divided into four stages:stable growth period(2000—2006),rapid fluctuation growth period(2006—2010),rapid negative growth period(2010—2015)and slow decline period(2015—2020),with an overall decrease of 9900 people,of which 5000 mu of arable land dam area increased by 9400 people and 10000 mu of arable land dam area decreased by 19300 people;the population distribution of arable land dam area of more than 5000 mu was mainly relatively lower-density agglomeration area and lower-density agglomeration area,and the population distribution difference was obvious;the spatial correlation of population density was generally manifested as no significant difference,and locally manifested as HH,LL and HL agglomerations;the migration range of the population center of gravity in the dam area was small,and the meridional and zonal changes showed a reciprocating trend.
作者
唐天君
周忠发
张付显梅
黄登红
邓芳芳
TANG Tian-jun;ZHOU Zhong-fa;ZHANG-FU Xian-mei;HUANG Deng-hong;DENG Fang-fang(Guizhou Institute of Land and Resources Surveyind and Panning,Guiyang 550001,China;School of Karst Science/School of Geography and Environmental Science,Guizhou Normal University,Guiyang 550001,China;State Engineering Technology Institute for Karst Desertification Control,Guiyang 550001,China)
出处
《湖北农业科学》
2024年第2期268-274,F0003,共8页
Hubei Agricultural Sciences
基金
贵州省石漠化耕地调查、五千亩以上坝区耕地调查专题研究项目(GTGHY2018)
国家自然科学基金地区项目(41661088)
贵州省科技计划项目(黔科合支撑[2023]一般211)。
关键词
耕地坝区
人口分布
时空演变
空间自相关
贵州省
arable land dam area
population distribution
spatial-temporal evolution
spatial autocorrelation
Guizhou Province
