4个时期升金湖湿地的土地利用动态研究

发布时间：2018-01-02 13:29

本文关键词：4个时期升金湖湿地的土地利用动态研究　出处：《湿地科学》2017年01期 　论文类型：期刊论文

【摘要】：以1995年9月、2000年9月、2007年10月和2014年10月4期Landsat TM/ETM+/OLI影像为数据源,采用监督分类和人工目视解译方法,进行4期遥感影像解译,获得4个时期升金湖国家级自然保护区的土地利用/土地覆被数据;根据单一土地利用类型动态度、综合动态度和土地利用转移矩阵,分析了该保护区土地利用动态;从植被覆盖度、景观指数(均匀度、多样性、优势度和破碎度)、道路建设、人类干扰活动和生态系统弹性等方面,分析人类活动对该保护区土地利用状况的影响。研究结果表明,1995~2014年期间,研究区内水域面积在减少,林地和草地面积明显增加,耕地面积一直在减少,建成区面积则不断增加。研究区内植被覆盖度偏高区域面积明显减少,植被覆盖度偏低和中等区域的面积在增大;研究区景观均匀度、多样性指数略有增加,景观优势度在减小,景观破碎度波动变化;生态系统弹性呈缓慢增大趋势,表明生态系统在向逐渐稳定的方向发展。
[Abstract]:Landsat TM/ETM / OLI images of September 1995, September 2000, September 2000 and October 4th 2014 were used as data sources. The land use / land cover data of Shengjin Lake National Nature Reserve in 4 periods were obtained by means of supervised classification and artificial visual interpretation. According to the dynamic degree of single land use type, comprehensive dynamic attitude and land use transfer matrix, the land use dynamics of the reserve was analyzed. It includes vegetation coverage, landscape index (evenness, diversity, dominance and fragmentation), road construction, human disturbance and ecosystem elasticity. The effects of human activities on the land use of the reserve were analyzed. The results showed that the area of water area in the study area was decreasing and the area of forest land and grassland was obviously increasing during the period from 1995 to 2014. The area of cultivated land has been decreasing, while the area of established area has been increasing. The area of high vegetation coverage in the study area is obviously reduced, and the area of low and medium area of vegetation coverage is increasing. In the study area, the landscape evenness, diversity index increased slightly, the landscape dominance decreased, and the landscape fragmentation fluctuated. The ecosystem elasticity is increasing slowly, which indicates that the ecosystem is developing steadily.
【作者单位】：安徽建筑大学水污染控制与废水资源化利用安徽省重点实验室;安徽建筑大学环境与能源工程学院;
【基金】：国家自然科学基金项目(41471422) 安徽省自然科学基金项目(1508085MD67) 国家级大学生科技创新项目(2015-35) 安徽省高校省级优秀青年人才基金重点项目(gxyq ZD2016148,2013SQRL047ZD)资助
【分类号】：F301.2;P237
【正文快照】： 遥感与地理信息系统相结合的技术,已经成为当前湿地研究所采用的主要技术,被广泛应用于各类型湿地信息提取[1]、湿地监测[2,3]、湿地土地利用格局研究[4]、湿地质量评价[5]和湿地景观格局变化研究[6,7]中。升金湖湿地是安徽省典型的淡水湖泊湿地。以升金湖湿地为研究区,利用遥

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