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(Article of periodic en Anglais - 2011)

Document title

Straw coverage alleviates seasonal variability of the topsoil microbial biomass and activity

Authors(s) and Affiliation(s)

LOU Y. (1 2) ; LIANG W. (1) ; XU M. (2) ; HE X. (3) ; WANG Y. (4) ; ZHAO K. (5) ;
(1) Inst. of Applied Ecology, Chinese Academy of Sciences, Shenyang, CHINE
(2) Inst. of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, CHINE
(3) Centre for Ecosystem Management/State Centre of Excellence for Ecohydrology, School of Natural Resources, Edith Cowan Univ., Joondalup, AUSTRALIE
(4) Key Lab. of Water Resources and Environment, Normal Univ., Tianjin, CHINE
(5) Center for Agricultural Technology Service, Chaoyang, CHINE

Abstract

Seasonal variability of microbial biomass carbon (MBC) and basal respiration (BR) in surface soil was compared between conventional straw removal (SR) and straw coverage (SC) in a maize field experiment, Northeast China. The straw coverage treatment significantly increased microbial energy, carbon and nutrient sources (soil C and N contents) and improved soil physical environment (moisture and porosity), and thus stimulated MBC and BR across the growth season of maize, as compared to the straw removal treatment. MBC and BR showed similar seasonal trends in soil temperature, with maximum values in summer. In both study years, the straw coverage treatment reduced seasonal variation of soil temperature, therefore it significantly moderated seasonal variability of MBC and BR. These results demonstrate that straw coverage contributes to stabilizing soil microbial characteristics in season

Source

Article of periodic

published at : Catena / ISSN 0341-8162

Editor : Catena, Cremlingen-Destedt - ALLEMAGNE (1973)

Millesime : 2011, vol. 86, no2 [pp. 117-120]

Bibliographic references : 28 ref.

Collation : 2 fig., 2 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2011.03.006

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2011
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