浙江农业学报 ›› 2016, Vol. 28 ›› Issue (12): 2090-2097.DOI: 10.3969/j.issn.1004-1524.2016.12.19

• 环境科学 • 上一篇    下一篇

山地城市土地利用地形分异特征及功能分区研究

朱小莉, 王三, 谢德体*   

  1. 西南大学 资源环境学院, 重庆 400715
  • 收稿日期:2016-05-11 出版日期:2016-12-15 发布日期:2017-01-05
  • 通讯作者: 谢德体,E-mail: xdt@swu.edu.cn
  • 作者简介:朱小莉(1989—),女,安徽阜阳人,硕士研究生,研究方向为土地资源管理、土地利用。E-mail: 1570630021@qq.com
  • 基金资助:
    国家国际科技合作专项(2013DFG92520); 国家自然科学基金(41371301)

Analysis into terrain gradient features and functional spatial planning of land use in mountainous city

ZHU Xiao-li, WANG San, XIE De-ti*   

  1. College of Resources and Environment, Southwest University, Chongqing 400715, China
  • Received:2016-05-11 Online:2016-12-15 Published:2017-01-05

摘要: 采集北碚区2014年的土地利用变更数据、土地利用现状图和DEM数据,运用GIS技术,从坡度和高程角度,引入分布指数、洛伦兹曲线以及基尼系数,研究北碚区土地利用的地形分异规律。结果发现,研究区土地利用类型分布特征与高程、坡度联系紧密。林地和未利用地的优势位主要分布在较高地形等级区间,建设用地、耕地、园地等受人为干扰较大的地类优势则随地形等级的减少逐渐显现。坡度对各地类空间分布影响显著,高程在300~400 m、坡度在6~15°之间的区域是城市扩展和耕地保护的主要空间。耕地和园地在地形上的分布相差不大,建设用地、林地以及其他农用地则表现出一定的区域差异。从优势度来看,土地利用类型分布呈现明显的层级性,地形优势等级由低到高依次为水域层、城镇层、耕地层、园地层、林地层。基于该地形分异规律,将研究区划分为核心水体区、城镇发展区、现代农业发展区、生态农业发展区和生态屏障区等5个功能区,并提出各区土地利用发展建议。

关键词: 山地城市, 土地利用, 地形因子, 功能区, 北碚区

Abstract: Based on the land use data, land use maps and DEM data in 2014 and GIS technology, the topographic variation of land use in Beibei District was revealed via distribution index, Lorenz curves and Gini coefficient from the perspective of slope and elevation. It was shown that the distribution characteristics of regional land use type were closely linked to elevation and slope. Woodland and unused land advantages were mainly distributed in the area of high terrain level. The advantages of the construction land, arable land and garden land increased gradually with the decrease of terrain level. Slope showed significant influence on spatial distribution of all land use types. The area in the elevation of 300-400 m and slope of 6-15°was the mean area for urban expansion and arable land protection. The distribution of arable land and garden land on terrain was similar, but the construction land, woodland and other agricultural land exhibited regional differences. The distribution of land use type showed obvious hierarchy. Based on terrain advantage level, it increased as water layer, construction land layer, arable land layer, garden layer, and woodland layer. Combined with land use pattern, 5 functional regions in the study area were designed, namely, the core of water area, urban development area, modern agriculture development area, ecological agriculture development area and ecological barrier area, and corresponding land development suggestions were put forward.

Key words: mountainous city, land use, topography factor, function area, Beibei District

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