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A Comparison of Multispectral ASTER and Hyperspectral AVIRIS Multiple Endmember Spectral Mixture Analysis for Sagebrush and Herbaceous Cover in Yellowstone.

A Comparison of Multispectral ASTER and Hyperspectral AVIRIS Multiple Endmember Spectral Mixture Analysis for Sagebrush and Herbaceous Cover in Yellowstone.

Authors :
Fairweather, Stacey
Potter, Christopher
Crabtree, Robert
Shuang Li
Source :
Photogrammetric Engineering & Remote Sensing; Jan2012, Vol. 78 Issue 1, p23-33, 11p
Publication Year :
2012

Abstract

Remote sensing techniques can provide information on habitat quality, biodiversity, and cover change at the regional scales of sagebrush-steppe dominated systems and with the repeatability necessary for resource management. In this paper, we present the results of multiple endmember spectral mixture analysis applied to Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) and Airborne Visible/Infrared Imaging Spectrometer (AviRis) imagery, comparing affects of seasonality and spectral resolution on the discrimination of soil, grass/forb, and sagebrush abundance in Yellowstone National Park. Our results showed that AVIRIS, despite late season phenology, correlated well with herbaceous and sagebrush cover field measurements (R<superscript>2</superscript> = 0.77 and 0.75, respectively), utilizing high spectral resolution to separate soils from vegetation. However, ASTER-derived values during peak green correlated best with field measurements (0.75 and 0.78). These results demonstrated an effective method to monitor semi-arid regions with readily available imagery and highlight applications for future hyperspectral satellite missions. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
00991112
Volume :
78
Issue :
1
Database :
Complementary Index
Journal :
Photogrammetric Engineering & Remote Sensing
Publication Type :
Academic Journal
Accession number :
70252586
Full Text :
https://doi.org/10.14358/PERS.78.1.23