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
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
Full textReferences:
- Anisimov O.A., Vaughan D.G., Callaghan T.V., Furgal C., Marchant H., Prowse T.D., Vilhjalsson H., Walsh J.E., Polar regions (Arctic and Antarctic). Climate Change 2007: Impacts, Adaptation and Vulnerability, Contribution of Working Group II to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, Cambridge: Cambridge University Press, 2007, pp. 653-685.
- Bhatt U.S., Walker D.A., Raynolds M.K., Comiso J.C., Epstein H.E., Jia G., Gens R., Pinzon J.E., Tucker C.J., Tweedie C.E., Webber P.J., Circumpolar Arctic Tundra Vegetation Change Is Linked to Sea Ice Decline, Earth Interactions, 2010, Vol. 14, Paper No. 8, pp. 1-20.
- Gould, W.A., Mercado-Díaz J.A., Zimmerman J.K., Twenty year record of vegetation change from long-term plots in Alaskan tundra, Long Term Ecological Research Network All Scientists Meeting, September 14-16, 2009, Estes Park, Abstract C11C-0524.
- ACIA, Cambridge: Cambridge University Press, 2005, pp. 781-862.
- Hill G.B., Henry G.H.R., Responses of High Arctic wet sedge tundra to climate warming since 1980, Global Change Biology, 2010, No. 17, pp. 276-287.
- Hudson, J.M.G., Henry G.H.R., Increased plant biomass in a High Arctic heath community from 1981 to 2008, Ecology, 2009, No. 90, pp. 2657-2663.
- Lantz T.C., Relative influence of temperature and disturbance on vegetation dynamics in the Low Arctic: An investigation at multiple scales, Ph.D. thesis, Vancouver: University of British Columbia, 2008, 167 p.
- Nghiem S.V., Rigor I.G., Petrovich D.K., Clemente-Coloon P., Weatherly J.W., Neumann G., Rapid reduction of Arctic perennial sea ice, Geophys. Res. Lett., 2007, Vol. 34, L19504, pp. 1-6.
- Sturm M., Racine C., Tape K., Increasing shrub abundance in the Arctic, Nature, 2001, No. 411, pp. 546-547.
- Slayback D.A., Pinzon J.E., Los S.O., Tucker C.J., Northern hemisphere photosynthetic trends 1982-99, Global Change Biol., 2003, No. 9, pp. 1-15.
- Sitch S., Smith B., Prentice I.C., Arneth A., Bondeau A., Cramer W., Kaplan J.O., Levis S., Lucht W., Sykes M.T, Thonicke K., Venevsky S., Evaluation of ecosystem dynamics, plant geography and terrestrial carbon cycling in the LPJ dynamic global vegetation model, Global Change Biol., 2003, No. 9, pp. 161-185.
- Tape K., Sturm M., Racine C., The evidence for shrub expansion in Northern Alaska and the Pan-Arctic, Global Change Biol., 2006, No. 12, pp. 686-702.
- Walker D.A., Epstein H.E., Jia G.J., Balser A., Copass C., Edwards E.J., Gould W.A., Hollingsworth J., Knudson J., Maier H.A., Moody A., Raynolds M.K., Phytomass, LAI, and NDVI in northern Alaska: Relationships to summer warmth, soil pH, plant functional types, and extrapolation to the circumpolar Arctic, J. of Geophysical Research, 2003, Vol. 108, No. D2, 8169, available at: doi:10.1029/2001JD000986, pp. 1-7.
- White, A., Cannel M.G.R., Friend A.D., The high-latitude terrestrial carbon sink: a model analysis, Global Change Biol., 2000, No. 6, pp. 227-245.