喀斯特山区城镇边缘带界定及特征研究
发布时间：2018-09-17 07:49
【摘要】：针对城镇边缘带在空间上存在动态的不确定性问题,该文提出以边缘带土地利用特征(主要指标为建设用地土地利用率与垦殖率)为基础的边缘带相对静态定界体系。采用ArcGIS Python实现体系中的自然断点分类法和空间筛选法,对特定时间节点的喀斯特山区城镇边缘带分布格局进行自动识别。从统计学、景观学探讨静态定界体系中网格参数设置,并从GIS统计分析山区城镇边缘带分布特征。研究表明:研究区域内边缘带约80%面积分布在0~15°坡度带;它与到核心区距离中度相关;山体和河道分布对城镇空间发展的连续性有影响;在交通网络影响下,地貌对边缘带界限的影响减弱,部分边缘带没有与城镇核心区相邻。因此,喀斯特山区小城镇边缘带分布在受地块与核心区之间距离、地形地貌、交通网络空间分布综合影响下,呈"飞地"分布。
[Abstract]:In view of the dynamic uncertainty of the urban marginal zone in space, this paper proposes a relative static boundary system based on the land use characteristics of the marginal zone (the main indicators are the land use efficiency and reclamation rate of the construction land). The natural breakpoint classification method and spatial screening method are used to realize the automatic recognition of the distribution pattern of the urban edge zone in the karst mountain area with special time node by using ArcGIS Python. The grid parameter setting in static boundary system is discussed from statistics and landscape science, and the distribution characteristics of urban edge zone in mountainous area are analyzed statistically by GIS. The study shows that about 80% of the area of the marginal zone in the study area is distributed in the 0 ~ 15 掳slope zone, which is moderately related to the distance from the core area; the distribution of mountains and rivers has an effect on the continuity of urban spatial development; under the influence of traffic network, The influence of geomorphology on the boundary of the marginal zone is weakened, and some of the marginal zones are not adjacent to the urban core area. Therefore, the marginal zones of small towns in karst mountainous areas are distributed as "enclaves" under the influence of the distance between land blocks and core areas, topography and geomorphology, and the spatial distribution of traffic networks.
【作者单位】： 贵州师范大学喀斯特研究院;贵州省山地资源研究所;
【基金】：国家自然科学基金项目(41261038)
【分类号】：P208
本文编号：2245213
[Abstract]:In view of the dynamic uncertainty of the urban marginal zone in space, this paper proposes a relative static boundary system based on the land use characteristics of the marginal zone (the main indicators are the land use efficiency and reclamation rate of the construction land). The natural breakpoint classification method and spatial screening method are used to realize the automatic recognition of the distribution pattern of the urban edge zone in the karst mountain area with special time node by using ArcGIS Python. The grid parameter setting in static boundary system is discussed from statistics and landscape science, and the distribution characteristics of urban edge zone in mountainous area are analyzed statistically by GIS. The study shows that about 80% of the area of the marginal zone in the study area is distributed in the 0 ~ 15 掳slope zone, which is moderately related to the distance from the core area; the distribution of mountains and rivers has an effect on the continuity of urban spatial development; under the influence of traffic network, The influence of geomorphology on the boundary of the marginal zone is weakened, and some of the marginal zones are not adjacent to the urban core area. Therefore, the marginal zones of small towns in karst mountainous areas are distributed as "enclaves" under the influence of the distance between land blocks and core areas, topography and geomorphology, and the spatial distribution of traffic networks.
【作者单位】： 贵州师范大学喀斯特研究院;贵州省山地资源研究所;
【基金】：国家自然科学基金项目(41261038)
【分类号】：P208
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