Analysis of forest disturbance using TM and AVHRR dataA methodology that will be used to determine the proportions of undisturbed, successional vegetation and recently disturbed land cover within coniferous forests using remotely sensed data from the advanced very high resolution radiometer (AVHRR) is presented. The method uses thematic mapper (TM) data to determine the proportions of the three stages of forest disturbance and regrowth for each AVHRR pixel in the sample areas, and is then applied to interpret all AVHRR imagery. Preliminary results indicate that there are predictable relationships between TM spectral response and the disturbance classes. Analysis of ellipse plots from a TM classification of the disturbed forested landscape indicates that the forest classes are separable in the red (0.63-0.69 micron) and near-infrared (0.76-0.90 micron) bands, providing evidence that the proportion of disturbance classes may be determined from AVHRR data.
Document ID
19910031131
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Spanner, Michael A. (NASA Ames Research Center Moffett Field, CA, United States)
Hlavka, Christine A. (NASA Ames Research Center Moffett Field, CA, United States)
Pierce, Lars L. (Montana, University Missoula, United States)