呼伦贝尔草原2000—2010年土地覆盖变化的遥感监测与分析

发布时间：2018-05-28 06:21

本文选题：草原 + 呼伦贝尔　；参考：《中国农业大学学报》2017年05期

【摘要】：分析2000—2010年呼伦贝尔草原土地覆盖空间分布格局、时空变化趋势,揭示生态工程实施效果,为草原的合理开发利用提供科学依据,研究方法:基于2000、2005和2010年的3期Landsat 4/5TM遥感影像,采用最大似然法进行监督分类,得到各时期的土地覆盖分布图,通过制作不同时期不同地类间的转移矩阵,定量分析不同时期不同地类之间的相互转换结果。研究结果表明:1)草地年均减少面积为3 063.03hm2,与未利用土地、耕地和湿地发生剧烈转换;水域年减少面积为3 960.98hm2,与湿地和未利用土地发生剧烈转换;2)耕地、建设用地和未利用土地有不同程度增加;3)林地和湿地变化相对稳定。2000—2010年,由于气候、农业开发、建设用地占用等原因,造成呼伦贝尔草原水域和草地大面积减少,转换为耕地、建设用地和未利用土地总体趋势显著,总体而言呼伦贝尔草原水域、草地的生态保护形势严峻。
[Abstract]:This paper analyzes the spatial distribution pattern and temporal and spatial change trend of land cover in Hulunbeir grassland from 2000 to 2010, reveals the effect of ecological engineering, and provides a scientific basis for the rational development and utilization of grassland. Methods: based on the three Landsat 4/5TM remote sensing images of 2005 and 2010, the maximum likelihood method was used to monitor and classify the land cover distribution in different periods, and the transfer matrix was made between different land types in different periods. Quantitative analysis of the results of transformation between different types of land in different periods. The results showed that the average annual reduced area of grassland was 3 063.03hm2, which changed sharply with unused land, cultivated land and wetland, and the area of water decreased by 3 960.98hm2 per year, which changed sharply with wetland and unused land. The change of forest land and wetland is relatively stable from 2000 to 2010. Due to climate, agricultural development, construction land occupation and other reasons, the water area and grassland of Hulunbeir grassland have been greatly reduced. The general trend of conversion into cultivated land, construction land and unused land was significant. In general, the ecological protection situation of Hulunbeir grassland and grassland was grim.
【作者单位】：中国矿业大学(北京)土地复垦与生态重建研究所/矿山生态安全教育部工程研究中心;
【基金】：国家重点研发计划(2016YFC0501103-4)
【分类号】：S812

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