Mots-clés
Carbone ; Changement climatique ; Distribution spatiale ; Dégel ; Géochimie ; Géosystème ; Modèle ; Pergélisol ; Propriétés du sol ; Périglaciaire ; ThermokarstCarbon ; Climatic change ; Geochemistry ; Geosystem ; Model ; Periglacial features ; Permafrost ; Soil properties ; Spatial distribution ; Thawing ; ThermokarstCambio climático ; Carbono ; Deshielo ; Distribución espacial ; Geoquímica ; Geosistema ; Modelo ; Pergelisol ; Periglaciar ; Propiedades del suelo ; TermokarstCharacterisation of the permafrost carbon pool
Transactions of the International Permafrost Association
Auteur(s) et Affiliation(s)
KUHRY, P.
Dep. of Physical Geography and Quaternary Geology, Univ., Stockholm, Suede
GROSSE, G.
Geophysical Inst., Univ. Alaska, Fairbanks, Etats-Unis
HARDEN, J.W.
US Geological Survey, Menlo Park, California, Etats-Unis
HUGELIUS, G.
Dep. of Physical Geography and Quaternary Geology, Univ., Stockholm, Suede
KOVEN, C.D.
Lawrence Berkeley National Lab., Berkeley, Etats-Unis
PING, C.-L.
Palmer Research Center, Univ. of Alaska Fairbanks, Palmer, Etats-Unis
SCHIRRMEISTER, L.
Alfred Wegener Inst. for Polar and Marine Research, Research Unit, Potsdam, Allemagne
TARNOCAI, C.
Agriculture and Agri-Food Canada, Ottawa, Canada
BURN, C.R.
Carleton Univ., Ottawa, Canada
Description :
The current estimate of the soil organic carbon (SOC) pool in the northern permafrost region of 1672 Petagrams (Pg) C is much larger than previously reported and needs to be incorporated in global soil carbon (C) inventories. The Northern Circumpolar Soil Carbon Database (NCSCD), extended to include the range 0-300 cm, is now available online. An aim is to provide quantitative uncertainty ranges for C pool estimates. Recent studies have greatly improved understanding of the regional patterns, landscape distribution and vertical (soil horizon) partitioning of the permafrost C pool in the upper 3 m of soils. However, the deeper C pools in unconsolidated Quaternary deposits need to be better constrained. A general lability classification of the permafrost C pool should be developed to address potential C release upon thaw. The permafrost C pool and its dynamics are beginning to be incorporated into Earth System models.
Type de document :
Article de monographie
Source :
Permafrost and periglacial processes, issn : 1045-6740, 2013, vol. 24, n°. 2, p. 146-155, nombre de pages : 10, Références bibliographiques : 2 p.
Date :
2013
Editeur :
Pays édition : Royaume-Uni, Chichester, Wiley
Langue :
Anglais
Anglais
Droits :
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)