河南省人口分布与乡镇可达性空间耦合特征

发布时间：2018-07-26 08:27

【摘要】：人口作为区域发展的内在因素,交通可达性提高将有利于促进人口或劳动力要素的自由流动和优化配置。在考虑土地利用及地形因素的基础上,采用包含乡村道的交通网络数据集,应用改进的成本距离计算方法,分析河南省乡镇可达性及其分布特征;通过乡镇可达性与人口密度的空间叠加,揭示人口分布与可达性的空间耦合特征。结果表明:(1)各乡镇可达性总体呈现明显的圈层分布,可达性值由内向外逐渐降低;时段越短,内部差异越大,交通指向越明显。(2)乡镇可达性与人口密度在各时间圈呈现正相关关系,可达性与人口分布集聚产生作用的最大时间距离为1.5h。(3)人口与交通可达性的空间耦合呈现较明显的半环状分布,社会经济指向性明显。(4)交通可达性对人口变化的影响具有时间阶段性和区域差异性。
[Abstract]:As an internal factor of regional development, the improvement of transportation accessibility will help to promote the free flow and optimal allocation of population or labor factors. Based on the consideration of land use and terrain factors, the traffic network data set including rural roads is adopted, and the improved cost-distance calculation method is applied to analyze the accessibility and distribution characteristics of villages and towns in Henan Province. The spatial coupling characteristics of population distribution and reachability are revealed through the spatial superposition of reachability and population density in towns and villages. The results showed that: (1) the total reachability of each township showed obvious distribution of circles, the value of reachability gradually decreased from inside to outside, and the shorter the time period, the greater the internal difference. The traffic direction is more obvious. (2) there is a positive correlation between town accessibility and population density in each time circle. The maximum time distance between reachability and population agglomeration is 1.5 h. (3) the spatial coupling of population and traffic accessibility shows a more obvious semi-circular distribution. (4) the impact of traffic accessibility on population change has temporal stages and regional differences.
【作者单位】：河南大学环境与规划学院;黄河中下游数字地理技术教育部重点实验室;河南大学黄河文明与可持续发展研究中心;河南省国土资源调查规划院;RMIT大学科学/工程与健康学院;
【基金】：国家自然科学基金项目(41601116) 教育部人文社会科学重点研究基地重大项目(16JJD770019) 河南大学优秀青年人才基金项目
【分类号】：C924.2;F512.7

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