赣南山地丘陵区城市人口增长与建成区扩张耦合关系

Coupling of Urban Land Expansion and Population Growth in Mountain and Hilly Region of Southern Jiangxi

随着中国经济发展逐步进入转型期,新型城镇化的深入推进成为区域经济持续发展的强大引擎,但在城镇化进程中产生的耕地安全、空间冲突等问题日益突出。分析山地丘陵城市人地关系,有利于把握城市发展质量、为山地丘陵区深入推进新型城镇化战略提供认识基础。研究以赣南原中央苏区为例,在2001年、2012年城市人口与建成区面积数据基础上,通过修正集中度构建了基于山地丘陵地区人口增长-建成区扩张耦合指数模型,利用数理统计及空间分析方法对其进行深入分析。结果表明:2001—2012年,城市人口及建成区集中度呈现出典型的幂分布特征,空间分布上则形成核心-边缘结构。城市人口与建成区集中度间的关联性显著增强,空间布局均以东北-西南方向为主,但二者由不均衡逐步趋于拟合,城市人口增长-建成区扩张的空间格局、规模差异均较大;趋势线在东西方向上变化十分显著,南北方向上起伏度变化则进一步增大。2001—2012年,赣南苏区主导城市类型由人口增长型转变为人地协调型;而人口增长-建成区扩张耦合格局则以建成区扩张型城市为主,城市蔓延式扩张现象明显。研究立足各级城市人地发展现状,提出促进赣南苏区城市人地协调发展差别化建议及措施。

With the development of China＇s economy into a transition period,new urbanization has become a powerful engine to further promote sustainable development in the local,but arable land security,space conflict and other issues arising increasingly predominate in the course of urbanization; analysis of the coupling of land and population to grasp the quality of urban development to provide a basis understanding for advancing new urbanization strategy.Study of Gannan,for example,based on the data of urban population and built-up area in 2001 and 2012,constructed by modifying the concentration hilly region based on population growth-coupled land expansion index model,the use of mathematical statistics and spatial analysis method of its in-depth analysis. The results show： 2001—2012,the urban population and land concentration showing typical power distribution,the spatial distribution of the form core-periphery structure. The relevance of the urban population and land concentration among significantly enhanced spatial layout are northeast-southwest oriented,but they gradually become fit by the uneven,urban population growth-spatial pattern of land to expand the size difference compared Great; trend line in the direction of change is very significant thing,the ups and downs of the north-south direction change is further increased. During2001—2012,the Gan South Sioux City area transformed from the type of human population growth into humanearth coordination model; and population growth-coupled land expansion pattern places dilated predominantly urban land,urban sprawl-type expansion phenomenon is obvious. This research is based on the current situation of urban development at all levels,and promote differentiated proposals and measures for urban harmonious development of Jiangxi South Sioux District.