地形梯度视角下郑州城镇建设用地扩张格局时空动态特征  

Characteristics of Urban Built-up Land Expansion Pattern on Different Topography Gradient Area in Zhengzhou City

作　　者：穆博[1] 张若兰 穆涛 董娜林 盛思雨 赵汝婷 田国行[2] MU Bo;ZHANG Ruolan;MU Tao;DONG Nalin;SHENG Siyu;ZHAO Ruting;TIAN Guohang(College of Resources and Environmental Sciences,Henan Agricultural University,Zhengzhou 450002,China;College of Landscape Architecture and Art,Henan Agricultural University,Zhengzhou 450002,China)

机构地区：[1]河南农业大学资源与环境学院,郑州450002 [2]河南农业大学风景园林与艺术学院,郑州450002

出　　处：《地域研究与开发》2022年第5期133-138,共6页Areal Research and Development

基　　金：国家自然科学基金项目(51808198);河南省重点研发与推广专项项目(222400410323)。

摘　　要：基于4期Landsat影像和12.5 m ALOS高程数据,采用地形域分级和扩张过程分析相结合的方法,研究1995—2020年郑州城镇建设用地扩张格局在不同地形域梯度上的变化特征。结果表明:(1)1995—2020年郑州城镇建设用地扩张了2.5倍。郑州扩张的城镇建设用地集中分布在地势平坦、坡度平缓的平原平坡型和丘陵平坡型地形域内,具有显著的梯度变化特征,坡度的约束作用较明显。(2)平原平坡型地域内的城镇建设用地景观破碎度较低,分布更加集聚,空间形态更复杂,而受自然地形的阻隔与限制,丘陵和山区的城镇建设用地分布较分散,空间形态较简单。(3)充分利用自然地形打造山城相依的城乡空间格局和重视城市竖向规划可能是郑州大都市区突破地形约束实现可持续发展的有效途径。The aim of this paper is to study the relationship between natural terrain and urban space expansion based on the analysis of four Landsat images and 12.5 m DEM image of Zhengzhou City.The combination of GIS spatial analysis and pattern process analysis were used to divide topographic gradient and study the dynamic changes characteristics of urban space expansion on different topographic gradient.The results reveals that:(1)There experienced a large-scale urban expansion and sprawl from 1995 to 2020 in Zhengzhou City.The construction of urban space in Zhengzhou City was concentrated in the flat terrain and gentle slope of plain flat slope and hill flat slope terrain,and present a decrease gradient changes with the increase of elevation and slope.The constraint effect of slope on urban space expansion is more obvious than elevation.The urban expansion rate on flat slope terrain was the fastest.(2)The urban spatial distribution was more concentrated and the urban form was more complex in the plain area,while the urban space distribution in hilly area was more dispersed and the spatial form was simpler.(3)Making full use of natural terrain to create a spatial pattern of urban and rural areas with mountains and cities dependent on each other,and paying attention to urban vertical planning,may be an effective way to break through the constraints of topography and realize the sustainable development in Zhengzhou metropolitan area.

关 键 词：建设用地扩张 格局过程 地形梯度 时空动态 郑州市 

分 类 号：TU986[建筑科学—城市规划与设计]