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Are vegetation indices useful in the Arctic?

Published online by Cambridge University Press:  27 October 2009

W. G. Rees ,
E. I. Golubeva  and
M. Williams
W. G. Rees
Affiliation:
Scott Polar Research Institute, University of Cambridge, Lensfield Road, Cambridge CB2 1ER
E. I. Golubeva
Affiliation:
Geography Faculty, Moscow State University, 119899 Moscow, Russia
M. Williams
Affiliation:
Centre for Glaciology, Institute of Earth Studies, University of Wales, Aberystwyth, Dyfed SY23 3DB
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Abstract

This paper describes a preliminary investigation of the extent to which the normalised difference vegetation index (NDVI), derived from satellite optical imagery, can indicate the extent of damage to upland tundra (fruticose lichen and dwarf shrub) vegetation. We combine the results of a previously reported classification of Landsat multispectral scanner imagery from Kol'skiy Poluostrov, Russia, with field measurements of the biomass and spectral reflectance of tundra vegetation. The results show that the NDVI is not strongly influenced by biomass, but that differences in species composition and ground cover are significant. Other workers have concluded that vegetation indices are not useful for boreal forests. It is therefore suggested that the use of the NDVI by itself as an indicator of the state of disturbed vegetation in Arctic regions is not recommended.

Information

Type
Articles
Information
Polar Record , Volume 34 , Issue 191 , October 1998 , pp. 333 - 336
Copyright
Copyright © Cambridge University Press 1998

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