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Written Paper

Specifics of fire-preventing arrangements in the forests of Baikal region  [2017]

Evdokimenko, M.D. Ivanov, V.V., Russian Academy of Sciences. Siberian Branch, Krasnoyarsk (Russian Federation). The V.N. Sukachiev Inst. of Forest Science

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Fire risk in major forest types and concomitant vegetation complexes across different altitudinal belts of the Baikal region has been analyzed. High fire risk in woodlands is determined by domination of light needle coniferous stands in their structure and specific climate with continuous spring-summer droughts. Thus, the risk of landscape wildfires is high. The most drastic situations occur in very dry years during forest pyrogenic anomalies when fire spreads across the main landscapes in several nature areas. Current fire-frequency is incompatible with high biosphere status of nature complex of Lake Baikal as an object of the World nature heritage. According to the results of many years of comparative studies of fire risk in phytocenoses with different species composition and structure of tree layers, the techniques of making fire stopping barriers were developed. A scheme of dividing the managed forests into isolated cells separated by special obstacles and fire-resistant forest borders combined with commonly used fire barriers is suggested. Fire-resistant barriers should be formed on both sides of main roads, passing through the intensively exploited woodlands dominating with common pine Pinus sylvestris L., Siberian stone pine Pinus sibirica Du Tour, Siberian spruce Picea obovata Ledeb., and Siberian fir Abies sibirica Ledeb. tree species. Barriers are intended to stop the fire front of crown fires. The barrier width is determined by the cell order. T
he barriers are bordered with clearings with scarified soil strips of 3–4 meters in width. Trees and shrubs damaged in the process are removed during clutter cleaning. Where the barrier passes through coniferous tree stands longitudinal corridors with scarified soil strips every 20–30 meters should be made. Reforestation and thinning are combined with the general fire preventing management system.

From the journal

Siberian Journal of Forest Science

ISSN : 2311-1410