基于三维景观格局指数的张家界市土地利用格局时空演化
发布时间：2019-04-01 09:11
【摘要】：在RS和GIS技术的支持下,基于三维景观方法选取面积/密度、边缘/形状、多样性3个方面的景观格局指数对典型山区张家界市1995—2015年的土地覆盖及其景观格局时空演化特征进行了分析。结果表明:20年来,研究区土地利用景观要素类型发生了明显变化,表现为耕地、草地面积大幅度减少,林地和建设用地面积大幅度增加,水域面积先增加后减少;耕地的主要去向是建设用地、林地和水域,林地增加的来源主要是草地和耕地。研究区景观格局20年来的总体变化情况是多样性指数先下降后升高,破碎度先减少后增加,景观异质性先降低后升高。同时,本研究显示,利用传统二维景观指数在进行定量描述该区景观格局变化时,低估了景观要素平均斑块面积,而三维景观格局指数由于引入了地形特征,对研究区景观格局及其动态变化反映则相对精确。
[Abstract]:With the support of RS and GIS technology, the area / density, edge / shape are selected based on three-dimensional landscape method. The spatial and temporal evolution characteristics of land cover and landscape pattern in Zhangjiajie City from 1995 to 2015 were analyzed by landscape pattern index in three aspects of diversity. The results show that in the past 20 years, the types of landscape elements of land use in the study area have changed obviously, such as arable land, grassland area, forest land and construction land area and water area increase first and then decrease. The main destination of cultivated land is construction land, woodland and water area, the increase of forestland mainly comes from grassland and arable land. The overall change of landscape pattern in the study area in the past 20 years is that diversity index decreases first and then increases, fragmentation decreases first and then increases, landscape heterogeneity decreases first and then increases. At the same time, this study shows that the traditional two-dimensional landscape index underestimates the average patch area of landscape elements in the quantitative description of landscape pattern changes in the area, while the three-dimensional landscape pattern index has introduced terrain characteristics. The response to the landscape pattern and its dynamic changes is relatively accurate.
【作者单位】： 湖南师范大学资源与环境科学学院;湘潭大学商学院;
【基金】：国家重点研发计划项目(2016YFC0502406) 湖南省教育厅一般项目(16C1567)
【分类号】：F301.2
本文编号：2451439
[Abstract]:With the support of RS and GIS technology, the area / density, edge / shape are selected based on three-dimensional landscape method. The spatial and temporal evolution characteristics of land cover and landscape pattern in Zhangjiajie City from 1995 to 2015 were analyzed by landscape pattern index in three aspects of diversity. The results show that in the past 20 years, the types of landscape elements of land use in the study area have changed obviously, such as arable land, grassland area, forest land and construction land area and water area increase first and then decrease. The main destination of cultivated land is construction land, woodland and water area, the increase of forestland mainly comes from grassland and arable land. The overall change of landscape pattern in the study area in the past 20 years is that diversity index decreases first and then increases, fragmentation decreases first and then increases, landscape heterogeneity decreases first and then increases. At the same time, this study shows that the traditional two-dimensional landscape index underestimates the average patch area of landscape elements in the quantitative description of landscape pattern changes in the area, while the three-dimensional landscape pattern index has introduced terrain characteristics. The response to the landscape pattern and its dynamic changes is relatively accurate.
【作者单位】： 湖南师范大学资源与环境科学学院;湘潭大学商学院;
【基金】：国家重点研发计划项目(2016YFC0502406) 湖南省教育厅一般项目(16C1567)
【分类号】：F301.2
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