Investigations of possible contributions NDVI's have to misclassification in AVHRR data analysis

David Evans; Ray L. Czaplewski

Treesearch

Investigations of possible contributions NDVI's have to misclassification in AVHRR data analysis

Informally Refereed

Authors:

David Evans, Ray L. Czaplewski

Year:

1996

Type:

General Technical Report

Station:

Rocky Mountain Research Station

Source:

In: Mowrer, H. Todd; Czaplewski, Raymond L.; Hamre, R. H., tech coords. Spatial Accuracy Assessment in Natural Resources and Environmental Sciences: Second International Symposium. May 21-23, 1996. General Technical Report RM-GTR-277. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station. p. 419-424.

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Abstract

Numerous subcontinental-scale projects have placed significant emphasis on the use of Normalized Difference Vegetation Indices (NDVI's) derived from Advanced Very High Resolution Radiometer (AVHRR) satellite data for vegetation type recognition. In multi-season AVHRR data, overlap of NDVI ranges for vegetation classes may degrade overall classification performance. The preliminary work of this project is presented to illustrate potential differences in vegetative cover discrimination capabilities between original visible and near-infrared (NIR) channels of AVHRR data and NDVI's derived from these channels. Initial tests on AVHRR data have been performed for regions of known vegetative cover composition in Northern Mexico. The results are presented here to stimulate debate on the effectiveness of use of NDVI's for vegetation type discrimination.

Parent Publication

Spatial accuracy assessment in natural resources and environmental sciences: Second International Symposium

Keywords

spatial data, spatial analyses, natural resources, environmental sciences, Normalized Difference Vegetation Indices, NDVI's, Advanced Very High Resolution Radiometer, AVHRR

Citation

Evans, David L.; Czaplewski, Raymond L. 1996. Investigations of possible contributions NDVI's have to misclassification in AVHRR data analysis. In: Mowrer, H. Todd; Czaplewski, Raymond L.; Hamre, R. H., tech coords. Spatial Accuracy Assessment in Natural Resources and Environmental Sciences: Second International Symposium. May 21-23, 1996. General Technical Report RM-GTR-277. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station. p. 419-424.