Decadal‐Scale Recovery of Carbon Stocks After Wildfires Throughout the Boreal Forests

Marjo Palviainen, Ari Laurén, Jukka Pumpanen, Yves Bergeron, Ben Bond-Lamberty, Markku Larjavaara, Daniel Kashian, Kajar Köster, Anatoly Prokushkin, Han Chen, Meelis Seedre, David Wardle, Michael Gundale, Marie-Charlotte Nilsson, Chuankuan Wang, Frank Berninger

Tutkimustuotos: ArtikkelijulkaisuArtikkeliTieteellinenvertaisarvioitu

Abstrakti

Boreal forests store 30% of the world's terrestrial carbon (C). Consequently, climate change mediated alterations in the boreal forest fire regime can have a significant impact on the global C budget. Here we synthesize the effects of forest fires on the stocks and recovery rates of C in boreal forests using 368 plots from 16 long-term (>= 100 year) fire chronosequences distributed throughout the boreal zone. Forest fires led to a decrease in total C stocks (excluding mineral soil) by an average of 60% (range from 80%), which was primarily a result of C stock declines in the living trees and soil organic layer. Total C stocks increased with time since fire largely following a sigmoidal shape Gompertz function, with an average asymptote of 8.1 kg C m(-2). Total C stocks accumulated at a rate of 2-60 g m(-2) yr(-1)during the first 100 years. Potential evapotranspiration (PET) was identified as a significant driver of C stocks and their post-fire recovery, likely because it integrates temperature, radiation, and the length of the growing season. If the fire return interval shortens to

Alkuperäiskielienglanti
Artikkelie2020GB006612
LehtiGlobal Biogeochemical Cycles
Vuosikerta34
Numero8
Sivumäärä17
ISSN0886-6236
DOI - pysyväislinkit
TilaJulkaistu - elokuuta 2020
OKM-julkaisutyyppiA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä, vertaisarvioitu

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