ISSN 2070-7401 (Print), ISSN 2411-0280 (Online)
Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa
CURRENT PROBLEMS IN REMOTE SENSING OF THE EARTH FROM SPACE

  

Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2011, Vol. 8, No. 1, pp. 183-189

Vegetation dynamics of the Vaigach Island under climate change impact

I. Lavrinenko 
Komarov Botanical Institute Russian Academy of Sciences, 197376 St.-Petersburg, 2 Professor Popov str
The processes of vegetation dynamics under climate change impact that have been identified for North American tundra zone, are also typical to a large extent for the Vaigach Island located in the European sector of the Arctic. Thus, the average NDVI (Normalized Difference Vegetation Index) has distinctively increased over the past thirty years on a sample plot. In 1984-1988 vegetation contours with NDVI values not exceeding 0.3-0.4 predominated, and in 2006-2010 those above 0.4 prevailed. The tendency of green phytomass elevation clearly visible in the different phytocoenosis types from sparse vegetation (projective cover less than 10%) to dense shrub and meadow communities (projective cover about 100%) was established. Besides, about 2 weeks displacement of maximum green plants biomass accumulation happened in 2006-2010 in comparison with 1984-1986 (from July - early August to the second decade of August).
Keywords: climate change, the dynamics of vegetation, the island Vaigach, arctic islands, NDVI
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