重庆市喀斯特槽谷地区农村居民点分布与地貌形态要素关系研究

张霞; 魏朝富; 倪九派; 张仕超

doi:10.3969/j.issn.1001-4810.2012.01.011

重庆市喀斯特槽谷地区农村居民点分布与地貌形态要素关系研究

doi: 10.3969/j.issn.1001-4810.2012.01.011

西南大学资源环境学院/西南大学三峡库区生态环境教育部重点实验室

基金项目: 国家水体污染控制与治理科技重大专项课题(2012ZX07104-003)、国家科技支撑计划课题(2012BAD05B06)

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出版历程
- 收稿日期: 2011-06-20
- 发布日期: 2012-03-25

Research on the distribution of rural settlements in relation to landform factors in karst trough valley of Chongqing Municipality

College of Resources and Environment, Southwest University / Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education

摘要

摘要: 选取喀斯特槽谷地区——重庆市石柱土家族自治县鱼池镇团结村农村居民点为研究对象,借助ArcGIS空间分析和地统计法,综合应用地貌-面积频度分布指数和信息熵分析了不同海拔、坡度、坡向、地形起伏度、地表粗糙度、剖面曲率和平面曲率7个地貌形态要素间农村居民点的分布特征。结果表明:①农村居民点分布的优势地形位分别为高程956.2~1000m,坡度5°~15°,坡向SW、W、NW和E,地形起伏度0~1m,地表粗糙度1.0~1.1,剖面曲率和平面曲率0°~5°的低地形位上;②在槽谷谷底,农村居民点信息熵的最大值为1.15,最小值为0.02,说明农村居民点在低地形位上分布的有序性较高。
- 喀斯特槽谷 /
- 居民点分布 /
- 地貌形态要素 /
- 地貌-面积频度分布指数 /
- 信息熵
Abstract: Taking rural settlements of Tuanjie Village, Yunchi Town, Shizhu Tujia Autonomous County as the study case, distribution characteristics of rural settlements are analyzed in view of landform factors such as elevation, slope, aspect, terrain undulation, surface roughness, SOA (slope of aspect) and SOS (slope of slope).The study adopts the method of spatial analysis and geostatistics of GIS and applies frequency distribution index of landform – area and information entropy. The major results indicate the advantageous terrain habitats of rural settlements locate in areas with elevation 956.2~1000 m, slope 5~15 degree, aspect SW, W, NW and E, terrain undulation0~1 m, surface roughness1.0~1.1,SO A and SOS0~5 degree. The maximum of information entropy of rural settlements in the bottom of karst trough valley is 1.15, but the minimum is 0.02, which indicates that the orderliness of rural settlements distribution in the low terrain is higher.
- karst trough valley /
- distribution of rural settlements /
- landform factors /
- frequency distribution index of landform-area /
- information entropy

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