Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2017, Vol. 14, No. 4, pp. 87-102
Assessment of boreal forests vulnerability to fire- and wind-induced disturbances from long-term series of satellite observations within the Urals region
A.N. Shikhov
1 , S.I. Perminov
1 , E.S. Kiseleva
1 1 Perm State University, Perm, Russia
Accepted: 25.05.2017
DOI: 10.21046/2070-7401-2017-14-4-87-102
Wildfires and windstorms are the most important disturbance agents in the boreal forests of Russia. Fire- and wind-induced forest damages may increase due to climate change. The paper presents an assessment of fire- and wind-induced forest losses in the Urals region during 2000–2014. The assessment is based on the results of the Global Forest Change project (Hansen et al., 2013) and other space imagery data sources. The total stand-replacement fires and treefalls area in the Urals’ forests was estimated at 1.638 million ha, which is 1.56% of the total forested area as of 2000. Wildfires were responsible for 96.4% of total forest losses. Maximum frequency of large wildfires is recorded behind the Ural Ridge, between 64° and 65° N, 63° and 68° E, where the fire-induced forest losses achieve 10–14% of the total forest-covered area. Wind-induced forest disturbances played a significant role only in the western part of the Urals region.
The number of large forest fires and treefalls as well as their damaged area are characterized by strong interannual variability. In this regard, it is impossible to estimate statistically significant annual trend of forest losses. In addition to the interannual and intra-annual variability assessment, information on the main wildfires outbreaks and largest treefalls in the Urals boreal forests in 2000–2014 is presented.
Keywords: forest cover losses, forest fires, treefalls, LANDSAT images, Global Forest Change Map, Urals region
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