English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/128119
Título

Towards a global assessment of pyrogenic carbon from vegetation fires

AutorSantín, C.; Doerr, S. H.; Kane, E. S.; Masiello, C. A.; Ohlson, M.; Rosa Arranz, José M. de la ; Preston, C. M.; Dittmar, T.
Palabras claveBiochar
Black carbon
Carbon accounting
Carbon emissions
Carbon sequestration
Charcoal
Dissolved organic carbon
Erosion
Pyrogenic organic matter
Wildfire
Fecha de publicación1-ene-2016
EditorJohn Wiley & Sons
Blackwell Publishing
CitaciónGlobal Change Biology 22(1): 76-91 (2016)
ResumenThe production of pyrogenic carbon (PyC; a continuum of organic carbon (C) ranging from partially charred biomass and charcoal to soot) is a widely acknowledged C sink, with the latest estimates indicating that ~50% of the PyC produced by vegetation fires potentially sequesters C over centuries. Nevertheless, the quantitative importance of PyC in the global C balance remains contentious, and therefore, PyC is rarely considered in global C cycle and climate studies. Here we examine the robustness of existing evidence and identify the main research gaps in the production, fluxes and fate of PyC from vegetation fires. Much of the previous work on PyC production has focused on selected components of total PyC generated in vegetation fires, likely leading to underestimates. We suggest that global PyC production could be in the range of 116-385 Tg C yr-1, that is ~0.2-0.6% of the annual terrestrial net primary production. According to our estimations, atmospheric emissions of soot/black C might be a smaller fraction of total PyC (<2%) than previously reported. Research on the fate of PyC in the environment has mainly focused on its degradation pathways, and its accumulation and resilience either in situ (surface soils) or in ultimate sinks (marine sediments). Off-site transport, transformation and PyC storage in intermediate pools are often overlooked, which could explain the fate of a substantial fraction of the PyC mobilized annually. We propose new research directions addressing gaps in the global PyC cycle to fully understand the importance of the products of burning in global C cycle dynamics.
Descripción16 páginas.-- 4 figuras.-- 183 referencias.
Versión del editorhttp://dx.doi.org/10.1111/gcb.12985
URIhttp://hdl.handle.net/10261/128119
DOI10.1111/gcb.12985
ISSN1354-1013
Aparece en las colecciones: (IRNAS) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
Towards_global_assessment_pyrogenic2016.pdf1,02 MBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 

Artículos relacionados:


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.