| 基于GIS的土地利用景观格局分析——以湖南省保靖县为例 |
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| 引用本文： | 俞晓莹,罗艳菊,蓝万炼.基于GIS的土地利用景观格局分析——以湖南省保靖县为例[J].湖南农业大学学报(自然科学版),2009,35(5). |
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| 作者姓名： | 俞晓莹 罗艳菊 蓝万炼 |
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| 作者单位： | 俞晓莹(长沙理工大学,土木与建筑学院,湖南,长沙,410076;中南大学,信息物理工程学院,湖南,长沙,410083);罗艳菊(海南师范大学,资源环境与旅游系,海南,海口,571158);蓝万炼(长沙理工大学,土木与建筑学院,湖南,长沙,410076) |
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| 基金项目： | 国家自然科学基金项目 |
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| 摘 要： | 以湖南省保靖县为研究区域,结合遥感数据和GIS空间分析功能,利用分形理论的多种维数计算方法分析了该区域的土地利用景观格局.结果表明:保靖县林地、耕地的盒维数最大,且均大于2,该区域以耕地和林地为主要特征;水域的分维数最小,为1.963,体现了保靖县的水系比较集中.斑块形态分维数中维数最大为水域,1.674,园地最小,为1.177 6,总体上体现该区域的景观破碎度不大,自然保护较好.以保靖县的行政区域为半径维数的测算中心,计算出未利用地分维数为2.208 1,其他土地利用分维数均小于2但接近于2,说明未利用地从中心向外密度递增、其他用地从测算中心向周边用地均匀变化的景观格局.
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| 关 键 词： | 土地利用/覆盖 景观格局 地理信息系统 分形理论 保靖县 |
Landscape pattern of land-use based on GIS: Taking Baojin county, Hunan as an example |
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| Abstract: | Morphological characteristics of land-use is an important manifestation for the degree of regional land-use. Quantitative evaluation of land-use spatial form is important in guiding the protection of basic farmland construction and county-planning. Take Baojing county for example, three dimensions were discussed in this paper, such as land-use/land-cover dimensions and structures, plaque spatial structure box dimensions, plaque shape fractal dimensions and plaque morphology radial dimensions by combined with remote sensing data, GIS spatial analysis and fractal theory. The results showed the main the region's land was characterized by arable land and woodland. The minimum of fractal dimension of the water area was 1.963, which shows the water system in Baojing county is comparatively centralized. The maximum of the plaque shape fractal dimension is 1.674, and only 1.177 6 in the garden plot, showing that this area is well preserved. Plaque morphology radial dimensions were the aggregation degree to measure the center of different types of land-use. |
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| Keywords: | land use/land cover change landscape pattern geographic information system(GIS) fractal theory Baojing county |
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