基于土地转移矩阵的疏勒河中游土地利用变化研究

发布时间：2018-11-07 15:02

【摘要】：为了分析疏勒河流域土地利用的变化情况,以疏勒河中游为研究区,利用1980,2000年和2013年多期遥感影像数据和地形图,运用人机交互目视解译以及空间分析方法和数理统计方法,获得疏勒河中游土地利用现状、土地利用类型转移矩阵,对疏勒河流域近34 a来土地利用结构的动态演化进行了系统分析。结果表明:(1)近34 a来,疏勒河中游内未利用土地分布最广,其次是草地和耕地,再次是林地、城乡、工矿、居民用地和水域,仅占研究区不到4%的面积;(2)近34 a来疏勒河中游地区耕地大面积增加,水域面积急剧减少;(3)疏勒河中游区各景观类型的变化强度和变化方向各有不同,生态功能呈退化的趋势;纯自然生态系统的景观格局的变化强度在近年来有所上升,人类活动的影响强度呈加强的趋势。
[Abstract]:In order to analyze the change of land use in the Shule River Basin, taking the middle reaches of the Shule River as the study area, using the multi-period remote sensing image data and topographic maps of 1980, 2000 and 2013, the interactive interpretation of human computer, spatial analysis and mathematical statistics are used. The present situation of land use and the land use type transfer matrix in the middle reaches of Shule River were obtained. The dynamic evolution of land use structure in the Shule River basin in the past 34 years was systematically analyzed. The results showed that: (1) in the last 34 years, the unused land was the most widely distributed in the middle reaches of Shule River, followed by grassland and cultivated land, followed by woodland, urban and rural areas, industrial mines, residential land and water area, which accounted for less than 4% of the study area; (2) in the last 34 years, the cultivated land in the middle reaches of Shule River increased greatly, the area of water area decreased sharply, (3) the intensity and direction of changes of landscape types in the middle reaches of Shule River were different, and the ecological function showed a tendency of degradation. The change intensity of landscape pattern of pure natural ecosystem has increased in recent years, and the influence intensity of human activities is increasing.
【作者单位】：甘肃省水利科学研究院;兰州大学资源环境学院;
【基金】：国家自然科学基金项目“疏勒河流域中游绿洲生态需水过程与阈值研究”(51369004)和“气候与土地利用变化对石羊河流域水资源影响研究”(51369003)
【分类号】：F301.24

【相似文献】