Intraseasonal Dynamics of River Discharge and Burned Forest Areas in Siberia
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DOI:
10.3390/w11061146URI (для ссылок/цитирований):
https://www.mdpi.com/2073-4441/11/6/1146https://elib.sfu-kras.ru/handle/2311/129511
Автор:
Пономарев, Евгений Иванович
Пономарева, Татьяна Валерьевна
Прокушкин, Анатолий Станиславович
Коллективный автор:
Институт экологии и географии
Кафедра экологии и природопользования
Дата:
2019-05Журнал:
WaterКвартиль журнала в Web of Science:
Q2Библиографическое описание:
Пономарев, Евгений Иванович. Intraseasonal Dynamics of River Discharge and Burned Forest Areas in Siberia [Текст] / Евгений Иванович Пономарев, Татьяна Валерьевна Пономарева, Анатолий Станиславович Прокушкин // Water. — 2019. — № 11. — С. 1146Аннотация:
This study demonstrates the dependence between the forest burning rates and abnormal
decrease in Siberian river discharges under the conditions of the permafrost zone. Our study area is in
Central Siberia and Eastern Siberia/Yakutia. Four rivers (Podkamennaya Tunguska, Lower Tunguska,
Aldan, and Viluy) were selected for the study. We analyzed the long-term and seasonal variation of
river discharges (archive of The Global Runo Data Centre for 1939–2015) together with the forest
burning dynamics within the river basins (archive of Sukachev Institute of Forest for 1996–2015).
We compared the discharges per year with the 77-year average value. Abnormally low levels of
discharge constituted 58–78% of the averaged annual rate. An analysis of available chronologies of
extreme fire events and relative burned areas (RBAs) showed a high correlation with intra-seasonal
data on the runo minima. The most significant response of river discharges to the wildfire e ect
was shown for the late summer/autumn season after extreme wildfires during the summer period.
The deficit of the runo was not explained by a low precipitation. Late summer and autumn anomalies
of discharge were typical (r = 0.57 : : : 0.77, p < 0.05) for rivers of Central Siberia in seasons of
extreme forest burning. The correlation was lower for rivers of Eastern Siberia/Yakutia.