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：1992
卷号：XXIX Part B4
页码：757-760
出版社：Copernicus Publications
摘要：Biophysical Land Units (BLU) are ecological response units, modeled with an image-based Geographic InformationSystem (GIS). BLUs represent a data model, and a strategy, for enhancing analysis techniques to support decisionmaking in natural resource management.Initial, or "core" BLU data are derived from: satellite remote sensing data, Digital Elevation Models (OEM), soils data,and surface water data. The hierarchal concept of BLUs, both in scale and attribute detail, contained in a GISframework allows: addition or deletion of data layers, integration of mUlti-temporal datasets, and analysis of changedetection and multiple scenarios.Spatial change detection analysis of the distribution of biophysical attributes (biodiversity), and ecological responses,is tied to site specific data, for enhanced resolution of detail and analysis capabilities. Site data includes such thingsas: observed assemblages of flora and fauna, rain gauge data, or a particular use or management practice.
