THE COMPARATIVE EVALUATION OF ERTS -Ⅰ IMAGERY FOR RESOURCE INVENTORY IN LAND USE PLANNING

摘要

Multidiscipline Team interpretation and mapping of resources for Crook County is complete on 1:250,000 scale enlargements of ERTS imagery and 1:120,000 hi-flight photography. Maps of geology, soils, vegetation-land use and land resource units have been interpreted to show limitations, suitabilities and geologic hazards for land use planning. Mapping of lineaments and structures from ERTS imagery has shown a number of features not previously mapped in Oregon. A multistage timber inventory of Ochoco National Forest has been made, using ERTS images as the first stage. In¬ventory of forest clear-cutting practices has been successfully demon¬strated with ERTS color composites. Soil tonal differences in fallow fields shown on ERTS correspond with major soil boundaries in loess-mantled terrain. A digital classification system used for discriminating natural vegetation and geologic material classes has been successful in separating most major classes around Newberry Caldera, Mt. Washington and Big Summit Prairie. Computer routines are available for correction of scanner data variations;and for matching scales and coordinates between digital and photographic imagery.