基于乡镇尺度的兰西城市群人口分布特征及其影响因素  

Population distribution and influencing factors in Lanzhou-Xi’ning urban agglomeration based on township scale

作　　者：罗君[1,2] 石培基[1] 张学斌[1] LUO Jun;SHI Peiji;ZHANG Xuebin(College of Geography and Environment Science,Northwest Nonnal University,Lanzhou 730070,China;College of Resources and Environment,Gansu Agricultural University,Ixinzhou 730070,China)

机构地区：[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

出　　处：《干旱区资源与环境》2020年第7期104-111,共8页Journal of Arid Land Resources and Environment

基　　金：国家自然科学基金项目(41771130)资助。

摘　　要：以乡镇(街道)的人口普查数据为基础,采用GIS空间分析和地理探测器方法,探讨人口分布特征及影响因素。结果表明:兰西城市群人口分布不均衡,人口密度两极化,"马太效应"不断加剧。城乡差异所致的"核心-外围"结构明显,呈"大分散、小集中"的分布格局。兰西城市群人口分布具有空间自相关性,形成兰州、西宁和临夏3个人口极核,其中,兰州市市区所在街道人口集聚度高,"虹吸效应"明显。人口分布是多因素共同作用下非线性耦合的结果,自然因素是人口分布的稳定影响因素,经济因素对人口空间分异的方向和程度产生扰动,社会因素对人口分布具有明显的导向作用,各驱动因子之间具有协同增强的作用,水资源和土地资源是兰西城市群人口均衡分布的主要制约因素。Based on the fifth and sixth population census data,spatial analysis method and geodetector method were applied to analyze the population distribution characteristics and the influence factors.The results showed that population distribution in the study area was very imbalanced,population density was polarized,and"Matthew effect"was increasing.The"core-periphery"structure caused by urban-rural disparity was obvious,which characterized by large dispersion and small concentration.Population density showed a positive spatial autocorrelation characteristic,it formatted three population polar nuclei located in Lanzhou,Xining and Linxia,and population density was very high in Lanzhou city,which means the siphoning effect was obvious.Population distribution pattern was the non-linear coupling result of multiple factors.Among the driving factors,natural factors were the most stabled influencing factors,economic factors interfered the direction and degree of population spatial differentiation,social factors showed obvious guiding effects on population distribution.All driving factors were synergistic enhancement,water resources and land resources were the main constraints factors for the balanced distribution of population in the study area.

关 键 词：人口分布特征 影响因素 地理探测器 乡镇尺度 兰西城市群 

分 类 号：C922[社会学—人口学]