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土地利用空间格局与功能特征关联分析——以天水市为例

, PP. 370-375

Keywords: 土地利用,空间格局,优势度,人口密度,景观指数,天水,甘肃

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Abstract:

区域土地利用结构与功能特征之间的关系一直是土地利用研究的核心问题。基于天水市2005年土地变更调查数据,从土地利用数量结构与景观格局两方面,选取土地利用结构集中化指数、总体组合类型、区位指数、景观多样性指数、均匀度指数和优势度指数等,对各县区及不同地类的空间格局与功能特征进行定量分析。结果表明天水市2005年土地组合类型以耕地—林地—牧草地—其他农用地的组合为主;土地利用集中化程度最高的是清水县,为0.082;耕地、城乡建设用地和交通水利用地大部分具有区位意义;多样性最高的是张家川县,为2.352,优势度最高的是麦积区,为1.604,均匀度最高的是张家川县,为0.742;多样性、均匀度指数与组合类型数呈同向关联,与优势度呈反向关联;人口密度与土地利用程度呈同向关联,经济密度与土地利用程度、区位指数的关联度不大。

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