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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, 2023, Vol. 20, No. 5, pp. 205-216

Effects of snowmelt on seasonal and interannual vegetation dynamics in the Lena Delta

K.I. Simonova 1 
1 Komarov Botanical Institute RAS, Saint Petersburg, Russia
Accepted: 10.10.2023
DOI: 10.21046/2070-7401-2023-20-5-205-216
The article is dedicated to investigation of vegetation dynamics depending on snowmelt timing and accompanying air temperatures on Samoylov and Kurungnakh islands in Lena delta. Meteorological data, multispectral images of MODIS, Landsat-8 and Sentinel-2 have been processed to analyze seasonal and interannual (2000–2018) development of local vegetation cover. Plant community feedback to environmental conditions in the beginning of vegetation season has been studied based on snowmelt timing and daily mean air temperatures. Besides, seasonal vegetation types` dynamics have been studied. As a result of current study typical snowmelt timing and air temperature conditions have been revealed. Average air temperatures within 15 days after snowmelt have been identified for years with early, average and late snowmelt. Dependency of NDVI and sum of temperatures above 0 C has been brought to light. During the years with least amount of warm days the environmental conditions were less favorable for vegetation development in the following year.
Keywords: Arctic, vegetation dynamics, remote sensing, NDVI, snowmelt
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