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Title of Journal: Adv Atmos Sci

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Abbravation: Advances in Atmospheric Sciences

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Springer Berlin Heidelberg

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10.1007/s11009-007-9023-9

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1861-9533

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Impacts of snow cover on vegetation phenology in t

Authors: Heqing Zeng Gensuo Jia
Publish Date: 2013/08/16
Volume: 30, Issue: 5, Pages: 1421-1432
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Abstract

The dynamics of snow cover is considered an essential factor in phenological changes in Arctic tundra and other northern biomes The Moderate Resolution Imaging Spectroradiometer MODIS/Terra satellite data were selected to monitor the spatial and temporal heterogeneity of vegetation phenology and the timing of snow cover in western Arctic Russia the Yamal Peninsula during the period 2000–10 The magnitude of changes in vegetation phenology and the timing of snow cover were highly heterogeneous across latitudinal gradients and vegetation types in western Arctic Russia There were identical latitudinal gradients for “start of season” SOS r 2 = 0982 p 00001 “end of season” EOS r 2 = 0938 p 00001 and “last day of snow cover” LSC r 2 = 0984 p 00001 while slightly weaker relationships between latitudinal gradients and “first day of snow cover” FSC were observed r 2 = 048 p 00042 Delayed SOS and FSC and advanced EOS and LSC were found in the south of the region while there were completely different shifts in the north SOS for the various land cover features responded to snow cover differently while EOS among different vegetation types responded to snowfall almost the same The timing of snow cover is likely a key driving factor behind the dynamics of vegetation phenology over the Arctic tundra The present study suggests that snow cover urgently needs more attention to advance understanding of vegetation phenology in the future

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