caa a22 4500 388024666 CHVBK 20180307124934.0 cr unu---uuuuu 161130e199810 xx s 000 0 eng 10.1017/S0032247400026036 doi S0032247400026036 pii (NATIONALLICENCE)cambridge-10.1017/S0032247400026036 Are vegetation indices useful in the Arctic? [Elektronische Daten] 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. Copyright © Cambridge University Press 1998 Rees W. G. Scott Polar Research Institute, University of Cambridge, Lensfield Road, Cambridge CB2 1ER Golubeva E. I. Geography Faculty, Moscow State University, 119899 Moscow, Russia Williams M. Centre for Glaciology, Institute of Earth Studies, University of Wales, Aberystwyth, Dyfed SY23 3DB Polar Record Cambridge University Press 34/191(1998-10), 333-336 0032-2474 34:191<333 1998 34 POL https://doi.org/10.1017/S0032247400026036 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S0032247400026036 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Rees W. G. Scott Polar Research Institute, University of Cambridge, Lensfield Road, Cambridge CB2 1ER NATIONALLICENCE 700 1- Golubeva E. I. Geography Faculty, Moscow State University, 119899 Moscow, Russia NATIONALLICENCE 700 1- Williams M. Centre for Glaciology, Institute of Earth Studies, University of Wales, Aberystwyth, Dyfed SY23 3DB NATIONALLICENCE 773 0- Polar Record Cambridge University Press 34/191(1998-10), 333-336 0032-2474 34:191<333 1998 34 POL CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge