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地形地貌对半山区土地利用动态变化影响分析——以天津市蓟县为例

DOI: 10.6046/gtzyyg.2015.01.24, PP. 153-159

Keywords: 土地利用,动态变化,TM图像,半山区,地形,地貌

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Abstract:

以2001年和2011年2期TM图像为数据源,采用分类后比较法提取了10a间天津市蓟县土地利用动态变化信息;利用空间分析算法生成地形起伏度和坡度2个地形因子,分析了不同地形特征上的土地利用类型分布及变化特征;从类型转换和动态度2个方面定量分析土地利用变化情况,并分析土地利用变化与地形起伏度和坡度的相关关系以及土地利用变化的影响因素。结果表明:地形地貌对土地利用的动态变化有显著的影响,在微缓起伏地形上,居民地增加最多,其次是水域,而林地减少最多;在低起伏和中起伏地形上,居民地增加最多;在山地起伏地形上,居民地有所增加;在高山起伏地形上,只有林地和未利用地有少量变化。该结果可以为天津市蓟县的生态保护以及半山区县土地利用规划提供科学依据。

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