skip to main content
Language:
Search Limited to: Search Limited to: Resource type Show Results with: Show Results with: Search type Index

Pyrogenic organic matter production from wildfires: a missing sink in the global carbon cycle

Global change biology, 2015-04, Vol.21 (4), p.1621-1633 [Peer Reviewed Journal]

2014 The Authors. Published by John Wiley & Sons Ltd. ;2014 The Authors. Global Change Biology Published by John Wiley & Sons Ltd. ;2014 The Authors. Published by John Wiley & Sons Ltd. 2014 ;ISSN: 1354-1013 ;EISSN: 1365-2486 ;DOI: 10.1111/gcb.12800 ;PMID: 25378275

Full text available

Citations Cited by
  • Title:
    Pyrogenic organic matter production from wildfires: a missing sink in the global carbon cycle
  • Author: Santín, Cristina ; Doerr, Stefan H. ; Preston, Caroline M. ; González-Rodríguez, Gil
  • Subjects: biochar ; Biogeochemistry ; Biomass ; black carbon ; boreal forest ; Carbon - analysis ; Carbon Cycle ; carbon emissions ; charcoal ; Fires ; firesmart experimental fire ; Forest & brush fires ; Forests ; Models, Theoretical ; Northwest Territories ; Organic Chemicals - analysis ; Pinus - chemistry ; Pinus banksiana ; Primary s ; pyrogenic carbon
  • Is Part Of: Global change biology, 2015-04, Vol.21 (4), p.1621-1633
  • Description: Wildfires release substantial quantities of carbon (C) into the atmosphere but they also convert part of the burnt biomass into pyrogenic organic matter (PyOM). This is richer in C and, overall, more resistant to environmental degradation than the original biomass, and, therefore, PyOM production is an efficient mechanism for C sequestration. The magnitude of this C sink, however, remains poorly quantified, and current production estimates, which suggest that ~1‐5% of the C affected by fire is converted to PyOM, are based on incomplete inventories. Here, we quantify, for the first time, the complete range of PyOM components found in‐situ immediately after a typical boreal forest fire. We utilized an experimental high‐intensity crown fire in a jack pine forest (Pinus banksiana) and carried out a detailed pre‐ and postfire inventory and quantification of all fuel components, and the PyOM (i.e., all visually charred, blackened materials) produced in each of them. Our results show that, overall, 27.6% of the C affected by fire was retained in PyOM (4.8 ± 0.8 t C ha−1), rather than emitted to the atmosphere (12.6 ± 4.5 t C ha−1). The conversion rates varied substantially between fuel components. For down wood and bark, over half of the C affected was converted to PyOM, whereas for forest floor it was only one quarter, and less than a tenth for needles. If the overall conversion rate found here were applicable to boreal wildfire in general, it would translate into a PyOM production of ~100 Tg C yr−1 by wildfire in the global boreal regions, more than five times the amount estimated previously. Our findings suggest that PyOM production from boreal wildfires, and potentially also from other fire‐prone ecosystems, may have been underestimated and that its quantitative importance as a C sink warrants its inclusion in the global C budget estimates.
  • Publisher: England: Blackwell Publishing Ltd
  • Language: English
  • Identifier: ISSN: 1354-1013
    EISSN: 1365-2486
    DOI: 10.1111/gcb.12800
    PMID: 25378275
  • Source: MEDLINE
    Alma/SFX Local Collection
Back to results list
INSPIRE LIBRARY - TON DUC THANG UNIVERSITY (84-028) 37 755 057 Feedback
19 Nguyen Huu Tho St. Dist.7, HCM thuvien@tdtu.edu.vn

Copyright © 2017 INSPIRE LIBRARY - TON DUC THANG UNIVERSITY

Searching Remote Databases, Please Wait