Methane Oxidation in Soil Profiles of Broad-Leaved/ Korean Pine Mixed Forest in Changbai Mountain

doi:10.7523/j.issn.2095-6134.2004.1.011

Abstract

Abstract:

Samples were collected from soil in different depths in the virgin broad leavedl Korean pine mixed forest in Changbai Mountain. Laboratory study on methane oxidation of forest soil revealed the vertical profiles of methane oxidation activity. Maximum methane oxidation occurred at the horizon located at 5 to 15cm below the soil surface. When incubated with 400 μL/ L methane,it had the highest uptake rate of 3.3 nmol.h^{- 1}g^{- 1}.Soil at horiwn below 25 cm had negligible capacity to oxidize methane.Methane-oxidizing capacity of surface soil ( 0-5 cm) decreased because of inhibition effect of high concentration NH₄ on methanotrophs. The number of methanotrophs was greatest in soil at 5-10 cm below the surface.Methanotroph contributed more to methane oxidation than nitrifer did.

Key words: methane oxidation, vertical profile, methanotroph

CLC Number:

Q938.1

Liang Zhan-bei, Shi Yi, Wang Chen-rui, Yue Jin . Methane Oxidation in Soil Profiles of Broad-Leaved/ Korean Pine Mixed Forest in Changbai Mountain[J]. , 2004, 21(1): 71-77.

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