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Inventory of forest and rangeland and detection of forest stress. [black hills, manitou, colorado, and atlanta, georgia test sites
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Heller, R. C. Driscoll, R. S. Aldrich, R. C. |
| Copyright Year | 1974 |
| Description | The author has identified the following significant results. Controlled visual interpretation of one ERTS-1 scene taken at the peak of the growing season has indicated that classification to the ECOCLASS Series level is not entirely satisfactory. For five forest classes, aspen, Douglas-fir, lodgepole pine, ponderosa pine, and Spruce/fir, correct identification ranged from 60 to 70 percent. With the exception of shortgrass and wet shrubby meadow classes in the nonforest categories (81 and 100 percent correct, respectively), correct identification of the nonforest classes is so far unacceptable. The low accuracies are believed due to: (1) edge effects due to ecotones between plant community classes with apparent similar image characteristics; (2) confounding effects of amount of plant crown cover and ground surface material in the scene; and (3) variable land slope degree and aspect as it affects the image signature. |
| File Size | 412890 |
| Page Count | 14 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19740011827 |
| Archival Resource Key | ark:/13960/t23c0tc98 |
| Language | English |
| Publisher Date | 1974-03-20 |
| Access Restriction | Open |
| Subject Keyword | Geophysics Forests Earth Resources Program Ecosystems Colorado Photointerpretation Timber Vigor Black Hills Sd-wy Rangelands Georgia Land Use Timber Identification Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
