Тип публикации: статья из журнала

Год издания: 2023

Идентификатор DOI: 10.3390/fire6080301

Аннотация: <jats:p>Throughout the larch range, warming leads to frequent fires and an increase in burned areas. We test the hypothesis that fires are an essential natural factor that reset larch regeneration and support the existence of larch forests. The study area included Larix sibirica and L. gmelinii ranges within the permafrost zone. WeПоказать полностьюused satellite-derived and field data, dendrochronology, and climate variables analysis. We found that warming led to an increase in fire frequency and intensity, mean, and extreme (>10,000 ha) burned areas. The burned area is increasing in the northward direction, while fire frequency is decreasing. The fire rate exponentially increases with decreasing soil moisture and increasing air temperature and air drought. We found a contrasting effect of wildfire on regeneration within continuous permafrost and within the southern lowland boundary of the larch range. In the first case, burnt areas regenerated via abounded larch seedlings (up to 500,000+ per ha), whereas the south burns regenerated mostly via broadleaf species or turned into grass communities. After the fire, vegetation GPP was restored to pre-fire levels within 3–15 years, which may indicate that larch forests continue to serve as carbon stock. At the southern edge of the larch range, an amplified fire rate led to the transformation of larch forests into grass and shrub communities. We suggested that the thawing of continuous permafrost would lead to shrinking larch-dominance in the south. Data obtained indicated that recurrent fires are a prerequisite for larch forests’ successful regeneration and resilience within continuous permafrost. It is therefore not necessary to suppress all fires within the zone of larch dominance. Instead, we must focus fire suppression on areas of high natural, social, and economic importance, permitting fires to burn in vast, larch-dominant permafrost landscapes.</jats:p>

Журнал: Fire

Выпуск журнала: Т. 6, № 8

Номера страниц: 301

ISSN журнала: 25716255

Издатель: MDPI AG

• Kharuk Viacheslav I. (Laboratory of Biodiversity and Ecology, Tomsk State University, Lenin Str. 36, 634050 Tomsk, Russia)
• Shvetsov Evgeny G. (Sukachev Institute of Forests, Federal Scientific Center, Russian Academy of Science, Siberian Branch, Academgorodok 50/28, 660036 Krasnoyarsk, Russia)
• Buryak Ludmila V. (Sukachev Institute of Forests, Federal Scientific Center, Russian Academy of Science, Siberian Branch, Academgorodok 50/28, 660036 Krasnoyarsk, Russia)
• Golyukov Alexei S. (Laboratory of Biodiversity and Ecology, Tomsk State University, Lenin Str. 36, 634050 Tomsk, Russia)
• Dvinskaya Maria L. (Laboratory of Biodiversity and Ecology, Tomsk State University, Lenin Str. 36, 634050 Tomsk, Russia)
• Petrov Il'ya A. (Laboratory of Biodiversity and Ecology, Tomsk State University, Lenin Str. 36, 634050 Tomsk, Russia)

• Ядро РИНЦ (eLIBRARY.RU)