| 渭北旱塬小流域土地利用空间分布与地形因子的关系——以陕西省淳化县秦庄沟流域为例 |
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| 引用本文： | 陈见影,孙虎,常占怀.渭北旱塬小流域土地利用空间分布与地形因子的关系——以陕西省淳化县秦庄沟流域为例[J].水土保持通报,2014(2):163-167. |
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| 作者姓名： | 陈见影 孙虎 常占怀 |
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| 作者单位： | 陕西师范大学旅游与环境学院, 陕西西安 710062;陕西师范大学旅游与环境学院, 陕西西安 710062;陕西省水土保持勘测规划研究所, 陕西西安 710199 |
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| 基金项目： | 香港郭氏集团扶贫基金会"陕西淳化县秦庄沟流域水土保持与社会经济发展规划"(SXW20111);香港郭氏基金会"脱贫困奔小康淳化项目" |
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| 摘 要： | 以渭北旱塬秦庄沟流域为例,以土地利用现状为基础数据,结合ArcGIS技术,对地形因子数据和土地利用数据进行了叠加并提取,采用地形分布指数(LDI)分析了土地利用空间分布与地形因子的关系。研究结果表明,不同地类空间分布与地形因子坡度、高程、沟壑密度存在密切关系,并呈现一定的规律性。耕地优势分布主要在海拔900~1 100m,坡度为5°~25°,沟壑密度为0~4km/km2的区域;在海拔800~1 200m,坡度为0°~15°,沟壑密度为0~2km/km2和4~6km/km2的区域是园地优势分布区;林地优势区主要在海拔1 100~1 250m,坡度为15°~25°和25°,沟壑密度为2~6km/km2的区域;裸地的优势区在海拔800~1 000m和1 100~1 200m,坡度为25°,沟壑密度为4~8km/km2的区域;居民点用地优势区在海拔900~1 000m,坡度为0°~5°,沟壑密度为0~2km/km2的区域。
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| 关 键 词： | 渭北旱塬小流域 地形因子 土地利用 分布指数 |
| 收稿时间： | 2013/5/30 0:00:00 |
| 修稿时间： | 2013/6/20 0:00:00 |
Relationship Between Terrain Factors and Spatial Distribution of Small Watershed Land Use in Dry Upland to North of Weihe River-A Case Study of Qinzhuanggou Watershed of Chunhua County, Shaanxi Province |
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| CHEN Jian-ying,SUN Hu and CHANG Zhan-huai.Relationship Between Terrain Factors and Spatial Distribution of Small Watershed Land Use in Dry Upland to North of Weihe River-A Case Study of Qinzhuanggou Watershed of Chunhua County, Shaanxi Province[J].Bulletin of Soil and Water Conservation,2014(2):163-167. |
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| Authors: | CHEN Jian-ying SUN Hu and CHANG Zhan-huai |
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| Institution: | College of Tourism and Environment Science, Shaanxi Normal University, Xi'an, Shaanxi 710062, China;College of Tourism and Environment Science, Shaanxi Normal University, Xi'an, Shaanxi 710062, China;Shaanxi Provincial Institute of Soil and Water Conservation Surveying and Planning, Xi'an, Shaanxi 710199, China |
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| Abstract: | Taking Qinzhuanggou Watershed in the dry upland to the north of the Weihe River for an example, terrain factor data and land use data were overlaid and extracted based on the map of the terrain, with the support of ArcGIS software. The relationship between land use distribution and terrain factors was studied by land distribution index. Results showed that there is a close relationship between spatial distribution of land types and the terrain data of elevation, gradient and gully density. The predominant area of farmland are 900~1100 m above sea level, 5°~25° slope and 0~4 km/km2 gully density; the predominant area of garden plot, 800~1200 m above sea level, 0°~15° slope and 0~2 and 4~6 km/km2 gully density; the predominant area of woodland, 1100~1250 m above sea level, 15° ~25° and >25° slope and 2~6 km/km2 gully density; the advantages of bare land, 800~1000 and 1100~1200 m above sea level, >25° slope and 4~8 km/km2 gully density; and the predominant area of rural residential land use, 900~1000 m above sea level, 0°~5° slope and 0~2 km/km2 gully density. |
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| Keywords: | dry upland to north of the Weihe River terrain factor land use land distribution index |
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