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：2004
卷号：XXXV Part B7
页码：259-262
出版社：Copernicus Publications
摘要：This research was implemented in Miyagi Prefectur e, northeastern Japan. In recent years, the rich biodiversity of this prefecture has been decreasing rapidly due to loss of forest and traditional countryside landscape habitat. On the other hand, Japan has recently strengthened regulations for preservation of biodiver sity and implementation of envir onmental impact assessments, with a strong emphasis on ecosystems. To help pr eser ve biodiver sity, a simple but effective method f or environmental evaluation is required. In this research, GIS based landscape evaluation methods were applied to landscape evaluation in northeastern Japan. The study area was divided into 828 small watershed units, and four GIS indices; Natur al Vegetation Cover, Extent of Forest Cover, Road Density and Land Modification Rate, were used to evaluate each watershed unit. The scores on these four categories were then used to calculate and overall score, called the Degree of Natural Symbiosis, for each unit. In addition, Interspersion and Juxtaposition spatial indices were analyzed for watershed units and also for polygons. The results of the evaluation were compared against known data on biodiversity and plant communities for the watershed units. The results of this comparison showed that the evaluation techniques adopted here provide an easily implemented but reliable tool for spatial environmental evaluation, and is suitable for application to various environmental planning efforts, such as regional development master plans, project- specif ic environmental impact assessment, species management plans and biodiversity conservation plans
关键词：GIS; Ecosystem; Landscape; Land Use; Vegetation
