宁夏盐池县河东沙地景观分析研究  

Analysis on Landscape of Hedong Sandy Land in Yanchi,Ningxia

作　　者：武志博[1] 蓝登明[1] 郭建英[2] 凌侠[1] 贺慧[1] 于泽民 

机构地区：[1]内蒙古农业大学生态环境学院,内蒙古呼和浩特010019 [2]北京林业大学水土保持学院,北京100083 [3]内蒙古环境科学研究院,内蒙古呼和浩特010010

出　　处：《内蒙古林业科技》2008年第1期35-38,共4页Journal of Inner Mongolia Forestry Science and Technology

基　　金："十一五"国家科技支撑项目(2006BAD26B0102)

摘　　要：在遥感和GIS技术的支持下,通过采用斑块面积类指数、破碎度指数、多样性指数、均匀度指数等景观指数分析了1986—2003年盐池县河东沙地景观动态变化,结果显示:景观要素类型尺度上,研究区未利用景观面积明显缩小,林地景观向外扩展,反映出整个沙地荒漠化逆转的发展趋势;景观格局上,1995年以后破碎度变小,反映出人类活动对景观的干预作用不断增强;景观多样性指数和均匀度指数增加,表明景观的组成由简单趋向多样化。Supported by remote sensing and GIS technology, dynamic changes of the landscape of Hedong Sandy Land in Yanchi County from 1986 to 2003 have been analyzed by use of patch size index, fragmentation index, diversity index and evenness index and so on. The results show： from the standpoint of landscape factor, the area of non - used landscape obviously reduces, and forest landscape extends, which indicate the reversal tendency of desertification. On the standpoint of landscape pattern, the fragmentation index has reduced since 1995, which indicates that the people＇s intervention to landscape increased year increasing, which indicate that the component of landscape is by year. The diversity index and evenness index are tending to diversification.

关 键 词：河东沙地 景观格局 动态变化 

分 类 号：P208[天文地球—地图制图学与地理信息工程] Q149[天文地球—测绘科学与技术]