作　　者： ; ; ;

机构地区： 中国农业大学资源与环境学院土地资源管理系

出　　处： 《国土资源遥感》 2003年第1期23-28,共6页

摘　　要： 准确、快速地获取植被覆盖状况信息是北京山区生态恢复和建设的关键与重点。本文在FCDMappingmodel的原理和方法基础上,利用TM图像对北京门头沟区植被覆被率展开调查和制图应用研究,并利用FRAGSTATS软件对所得的植被覆盖等级图从斑块大小、斑块数、斑块密度、斑块平均面积、分形维数和聚集度等角度进行了空间格局的剖析。 Accurate and rapid monitoring of vegetation cover conditions is a key factor in land cover remote sensing monitoring in mountain areas of Beijing. Based on TM imagery data, the mapping technology of FCD mapping model was applied to Mentougou district of Beijing. The results show that the approach of remote sensing mapping is of good practical value. The accuracy of vegetation coverage estimated by FCD mapping model is some 95%, suggesting that the method is suitable to mountain areas. Moreover, the results computed from a landscape pattern analytical program FRAGSTATS by analyzing patch-sizes, number of patches, fractal dimensions and cohesion indices indicate that vegetation covers are main components of the present land cover in Mentougou of Beijing. Analyses of all these indices demonstrate that the ecological-environmental system in Mentougou mountain area is stable. The spatial structure analysis can help to identify the spatial distribution and structure stability of the vegetation coverage, and hence it is another important factor in the ecological system evaluation of Beijing mountain areas.

关 键 词： 北京山区 植被覆被率 遥感制图 景观格局 图像 水体 生态环境

领　　域： [农业科学] [环境科学与工程]