松嫩高平原县域土地利用空间格局地形梯度特征分析——以巴彦县为例

发布时间：2018-03-22 22:02

  本文选题：松嫩高平原　切入点：县域　出处：《地理科学》2017年08期 　论文类型：期刊论文

【摘要】：以黑龙江省巴彦县为研究区,基于研究区DEM数据,运用土地利用类型的分布指数、土地利用结构的信息熵、均衡度和优势度,明确研究区土地利用空间格局的地形梯度特征及地形因子对土地利用空间格局的影响。结果表明:(1)研究区土地利用空间格局在地形因子的作用下存在明显的梯度特征,旱地、水田、草地、水域、建设用地及其他用地主要分布在较低地形级别区,林地主要分布在较高地形级别区。(2)除林地以外,其他土地利用类型分布的优势地形位均位于较低地形级别区,林地分布的优势地形位位于较高地形级别区,各土地利用类型分布的优势区域不尽相同。(3)研究区土地利用结构的信息熵及均衡度变化趋势相同,优势度的变化趋势与信息熵、均衡度的变化趋势相反,土地利用空间格局与地形因子具有显著的相关性。
[Abstract]:Based on the DEM data of Bayan County, Heilongjiang Province, the distribution index of land use type, the information entropy, equilibrium degree and dominance of land use structure were used. The effects of topographic factors on the spatial pattern of land use in the study area were clarified. The results showed that the spatial pattern of land use in the study area had obvious gradient characteristics under the action of topographic factors. Paddy fields, grasslands, water areas, construction sites and other land use are mainly distributed in lower topographic areas, and woodlands are mainly distributed in higher topographic grade areas, with the exception of forestland, The dominant topographic sites of other land use types are located in lower topographic areas, and the dominant topographic sites of forest land distribution are located in higher topographic levels. The variation trend of information entropy and equilibrium degree of land use structure is the same, and the change trend of dominance degree is opposite to that of information entropy and equilibrium degree. The spatial pattern of land use has a significant correlation with topographic factors.
【作者单位】： 东北大学文法学院土地管理研究所;
【基金】：国家自然科学基金资助项目(41571165,41071346) 中央高校基本科研业务费(N161406002)资助~~
【分类号】：F301.24
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本文编号：1650571