Wildfires Dynamics in Siberian Larch Forests
Харук, Вячеслав Иванович
Пономарев, Евгений Иванович
Ranson, Kenneth J.
Институт экологии и географии
Кафедра экологии и природопользования
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Bibliographic Citation:Харук, Вячеслав Иванович. Wildfires Dynamics in Siberian Larch Forests [Текст] / Вячеслав Иванович Харук, Евгений Иванович Пономарев, Kenneth J. Ranson // Forests. — 2016. — Т. 7 (№ 6). — С. 1-9
Wildfire number and burned area temporal dynamics within all of Siberia and along a south-north transect in central Siberia (45–73 N) 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 (66,33’ 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).
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