期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2008
卷号：XXXVII-B8
页码：1149-1152
出版社：Copernicus Publications
摘要：In Japan, the National Environmental Census of Riverside Areas has been conducted over the 109 river systems under the supervision of the national government since 1991. This environmental census is comprised of three parts: biological survey, river survey, and river space utilization analysis. The census covers many assessment topics, keeping on accumulating various kinds of detailed information related to large river areas in the nation. This study shows that river environmental information such as vegetation heights and plant vigor can be extracted objectively and quantitatively by making full use of digital data being obtained from the rivers under the supervision of the national government
关键词：Remote Sensing; Environment; Land Cover; LIDAR ; ; classification
