ZHOU Qi-gang,CHEN Dan.Researched on the Topographic Differentiation of Land Use in Chongqing Mountainous Metropolitan Area[J].Research of Soil and Water Conservation,2013,20(03):86-91.
重庆山地都市区土地利用地形特征分异研究
- Title:
- Researched on the Topographic Differentiation of Land Use in Chongqing Mountainous Metropolitan Area
- Keywords:
- land use; topographic differentiation; terrain niche index; distribution index; Chongqing Mountainous Metropolitan Area
- 分类号:
- F301.24
- 摘要:
- 在我国快速城市化的背景下，随着城市建设用地的不断扩张，地形因子对土地利用的制约性更加凸显。以地形特征明显的重庆都市区为例，以DEM数据和TM数据为基础数据源，提取2010年区域土地利用现状数据和坡度数据，研究区域的土地利用在不同高程等级、坡度等级以及地形位等级中的分布指数，分析重庆都市区2010年的土地利用在地形上的分布特征。结果表明：重庆都市区各土地利用类型在不同地形因子等级下分布指数的分异特征明显；在各地形因子等级区域中，优势土地利用类型分布差异突出；随着城市用地扩张，各种类型的土地利用在高程为500~1 200 m的平地、400~600 m的低缓坡以及500 m以下的高缓坡区域，呈现出明显的竞争趋势，是人地关系协调的重点区域；伴随城市扩展，建设用地侵占耕地和陡坡耕地大量存在的现象需要进一步关注。
- Abstract:
- With the continuous expansion of construction land, the conditionality of land topography on land use is more and more outstanding under the background of the high-speed development of Urbanization. Chongqing Mountainous Metropolitan Area was taken as an example and the data of the land use status and slope were extracted from DEM and TM of study area in 2010. Researching the distribution index of land use in different altitude, slope and terrain niche was conducted to analysis the topography distribution characteristics of land use in the studied area. The results indicated that the distribution index of different land utilization types in different terrain factor had significant differentiation characteristics. Dominant land use type had obvious difference in each of the topography grade. Along with the expansion of construction land, various types of land use in the flatland of 500~1 200 m, low gentle slope of 400~600 m and high gentle slope less than 500 m, had a clear trend of competition. These regions are the key regions where the relationship between human and land should be adjusted. The phenomenon of construction land occupying cultivated land and many farmland existing on steep slope should be concerned.
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备注/Memo
收稿日期:2012-11-07;改回日期:2012-12-13。
基金项目:国家自然基金项目（41101503）；国家社科基金重大项目（11&ZD161）
作者简介:周启刚(1976-),男,重庆铜梁人,博士,副教授,主要研究方向:3S理论与应用和土地资源管理。E-mail:cd1105@163.com