挠力河流域土地利用变化及地形梯度效应分析

发布时间：2018-03-23 01:30

本文选题：土地利用　切入点：地形　出处：《中国土地科学》2017年08期 　论文类型：期刊论文

【摘要】：研究目的:探讨地形因素对土地利用格局变化的影响,揭示土地利用时空演变的原因、过程及机理,为区域土地利用规划与管理提供决策支持。研究方法:土地利用信息图谱法、地形位分析法和标准差椭圆分析法。研究结果:(1)各地类在地形梯度上表现出明显的层级分布特征,水田、草地、水域和未利用地的地形梯度优势分布区均为低区段,旱地和建设用地为低、中低区段,林地为中低、中高和高区段;(2)土地利用变化以稳定型和前期变化型为主,二者分布较为分散,稳定型主要为低、中低地形梯度的旱地和中、高地形梯度林地,前期变化型主要为低地形梯度的旱地和中地形梯度的林地二者转变为水田,其余图谱类型的比例均在5%以下,分布较为集中,主要表现为低地形梯度耕地内部结构转变。研究结论:在自然、社会和政策因素综合作用下,挠力河流域土地利用变化地形梯度效应显著,未来应加强对低地形梯度耕地和中、高地形梯度林地的规划管理。
[Abstract]:Objective: to explore the influence of topographic factors on the change of land use pattern, and to reveal the cause, process and mechanism of land use spatial and temporal evolution. To provide decision support for regional land use planning and management. Research methods: land use information map method, topographic location analysis method and standard deviation elliptic analysis method. The dominant distribution areas of terrains gradient in paddy field, grassland, water area and unused land are all low section, low section, low section of dryland and construction land, middle and low section of forest land, middle, high and high section of Guan2) the land use change is mainly stable type and early stage change type, the main type of land use change is stable type and early stage change type. The distribution of them is scattered, the stable type is mainly dryland with low, middle and low topographic gradient, and the forest land with high and middle topographic gradient, the former change type is mainly dryland with low topographic gradient and the woodland with middle topographic gradient is transformed into paddy field. The proportion of the other atlas types is below 5%, and the distribution is concentrated, which mainly shows the change of the internal structure of the cultivated land with low topographic gradient. Conclusion: under the combined action of natural, social and policy factors, The effect of topographic gradient on land use change in Niaolihe River Basin is significant. In the future, the planning and management of low-topographic gradient cultivated land and medium-high topographic gradient forest land should be strengthened.
【作者单位】：东北大学土地管理研究所;
【基金】：国家自然科学基金项目(41671520)
【分类号】：F301.24

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