ラスターＧＩＳを用いた森林の周縁部と内部の分析手法に関する研究

抄録

The purpose of this study is to present an analytical method of forest edges and interiors using raster GIS for landscape and urban planning. For this purpose, we propose using the minimum distance from outside patch, which is calculated based on the distance between different land use districts. To investigate its characteristics, we compared it with Shape Index and 2ndAI using the data of "Forest Land, Waste Land, etc." of Detailed Digital Information in Izumi Ward in Yokohama City in 1994. The comparison revealed that 1) Shape Index was not appropriate for analyzing per cell unit in detail although it was effective for analyzing edge complexity per patch unit, 2) 2ndAI was not suitable for evaluating edges with precision due to the fact that it was more focused on evaluating the agglomeration per cell unit, and 3) the minimum distance from outside patch could effectively analyze forest edges and interiors per cell unit in detail, overcoming the shortcomings of both Shape Index and 2ndAI.