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TitleSpectral reflectance characteristics of arctic vegetation for mapping ecozones with hyperspectral imaging systems
AuthorBudkewitsch, P; Wong, P -Y; Staenz, K; Hitchcock, R; Gauthier, E
SourceProceedings of the 7th Circumpolar Symposium on Remote Sensing of Polar Environments; 2002, 10 pages
Alt SeriesEarth Sciences Sector, Contribution Series 20043116
Meeting7th Circumpolar Symposium on Remote Sensing of Polar Environments; Longyearbyen, Svalbard; NO; June 24-27, 2002
Subjectsgeophysics; remote sensing; spectral analyses; spectrometric analyses; vegetation
Illustrationsphotographs; spectra; tables
AbstractSpectral characteristics of willow, moss and sedge are sufficiently different in the range of 440 to 2450 nm that they can be distinguished in Probe-1 airborne imaging spectrometer data. To test the capability of imaging spectroscopy for mapping the distribution of different plant communities, a data cube collected in July of 1999 over a sparsely vegetated area of northern Baffin Island near Arctic Bay, Nunavut, was processed to isolate spectrally distinct end members. The unmixing analysis method employed is data dependent and two vegetation end members of different spectral characteristics (Type A and B) were identified within the region of interest.
Type A is representative of a mesic heath dominated by arctic willow, whereas Type B is recognised as a moss-sedge meadow in a meso-hydric zone. Field investigation of these two vegetation end members was carried out and the use of imaging spectrometer data is shown to be effective for identifying and mapping some types of arctic vegetation. Understanding the spectral end members obtained in our analysis was aided by ground-based spectral measurements of single plant species.

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