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Soil carbon source and accumulation over 12,000 years in a semi-natural Miscanthus sinensis grassland in southern Japan

Auteur(s) et Affiliation(s)

HOWLETT, D.S.
Energy Biosciences Inst., Univ. of Illinois, Urbana, Etats-Unis
TOMA, Y.
Energy Biosciences Inst., Univ. of Illinois, Urbana, Etats-Unis
Fac. of Agriculture, Univ. Matsuyama, Ehime, Japon
WANG, H.
Illinois State Geological Survey, Prairie Research Inst., Univ., Champaign, Etats-Unis
SUGIYAMA, S.
Paleoenvironment Research Co., Ltd, Miyazaki, Japon
YAMADA, T.
Field Science Center for Northern Biosphere, Hokkaido Univ., Sapporo, Japon
NISHIWAKI, A.
Field Science Center, Fac. of Agriculture, Univ., Miyazaki, Japon
FERNANDEZ, F.
Dep. of Crop Sciences, Univ. of Illinois, Urbana, Etats-Unis
STEWART, J.R.
Energy Biosciences Inst., Univ. of Illinois, Urbana, Etats-Unis
Dep. of Plant and Wildlife Sciences, Brigham Young Univ., Provo, Etats-Unis


Description :
Soil carbon stock source was determined in 2 soil profiles on Miscanthus sinensis grassland at the Aso-Kuju National Park in Kumamoto Prefecture, Kyushu. Isotopic analysis demonstrated that 66.8% of soil C was derived from a C4 source. Radiocarbon-ages of soil fractions were highly correlated with soil depth (R2 = 0.99). Over a 12,000 year history of land use at the Aso caldera, Miscanthus sinensis was found to be a major contributor to soil carbon and a sink for atmospheric CO2, which, under certain constraints, has implications for the potential sequestration of soil carbon under Miscanthus in cultivated conditions.


Type de document :
Article de périodique

Source :
Catena (Giessen), issn : 0341-8162, 2013, vol. 104, p. 127-135, nombre de pages : 9, Références bibliographiques : 1 p.

Date :
2013

Editeur :
Pays édition : Allemagne, Cremlingen-Destedt, Catena

Langue :
Anglais
Droits :
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)