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Wildfires Dynamics in Siberian Larch ForestsWildfire number and burned area temporal dynamics within all of Siberia and along a south-north transect in central Siberia (45deg-73degN) were studied based on NOAA/AVHRR (National Oceanic and Atmospheric Administration/ Advanced Very High Resolution Radiometer) and Terra/MODIS (Moderate Resolution Imaging Spectroradiometer) data and field measurements for the period 1996-2015. In addition, fire return interval (FRI) along the south-north transect was analyzed. Both the number of forest fires and the size of the burned area increased during recent decades (p < 0.05). Significant correlations were found between forest fires, burned areas and air temperature (r = 0.5) and drought index (The Standardized Precipitation Evapotranspiration Index, SPEI) (r = 0.43). Within larch stands along the transect, wildfire frequency was strongly correlated with incoming solar radiation (r = 0.91). Fire danger period length decreased linearly from south to north along the transect. Fire return interval increased from 80 years at 62 N to 200 years at the Arctic Circle (6633' N), and to about 300 years near the northern limit of closed forest stands (about 71+ N). That increase was negatively correlated with incoming solar radiation (r = 0.95). Keywords: wildfires; drought index; larch stands; fire return interval; fire frequency; burned area; climate-induced trends in Siberian wildfires
Document ID
20160013872
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Ponomarev, Evgenii I.
(Academy of Sciences (Russia) Krasnoyarsk, Russian Federation)
Kharuk, Viacheslav I.
(Academy of Sciences (Russia) Krasnoyarsk, Russian Federation)
Ranson, Kenneth J.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Date Acquired
November 30, 2016
Publication Date
June 17, 2016
Publication Information
Publication: Forests
Publisher: MDPI
Volume: 7
Issue: 6
e-ISSN: 1999-4907
Subject Category
Environment Pollution
Report/Patent Number
GSFC-E-DAA-TN33442
Funding Number(s)
CONTRACT_GRANT: NNG11HP16A
Distribution Limits
Public
Copyright
Other
Keywords
wildfires
climate-induced trends in Siberian wildfires
drought index

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