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Journal of Zhejiang University SCIENCE B 2006 Vol.7 No.10 P.788~793

http://doi.org/10.1631/jzus.2006.B0788


A kinetic approach to evaluate salinity effects on carbon mineralization in a plant residue-amended soil


Author(s):  NOURBAKHSH Farshid, SHEIKH-HOSSEINI Ahmad R.

Affiliation(s):  Department of Soil Science, School of Agriculture, Isfahan University of Technology, Isfahan 84154, Iran

Corresponding email(s):   farshid@cc.iut.ac.ir

Key Words:  Salinity stress, Carbon mineralization, First-order kinetics, Plant residues, Residue quality


NOURBAKHSH Farshid, SHEIKH-HOSSEINI Ahmad R.. A kinetic approach to evaluate salinity effects on carbon mineralization in a plant residue-amended soil[J]. Journal of Zhejiang University Science B, 2006, 7(10): 788~793.

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author="NOURBAKHSH Farshid, SHEIKH-HOSSEINI Ahmad R.",
journal="Journal of Zhejiang University Science B",
volume="7",
number="10",
pages="788~793",
year="2006",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.2006.B0788"
}

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%T A kinetic approach to evaluate salinity effects on carbon mineralization in a plant residue-amended soil
%A NOURBAKHSH Farshid
%A SHEIKH-HOSSEINI Ahmad R.
%J Journal of Zhejiang University SCIENCE B
%V 7
%N 10
%P 788~793
%@ 1673-1581
%D 2006
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2006.B0788

TY - JOUR
T1 - A kinetic approach to evaluate salinity effects on carbon mineralization in a plant residue-amended soil
A1 - NOURBAKHSH Farshid
A1 - SHEIKH-HOSSEINI Ahmad R.
J0 - Journal of Zhejiang University Science B
VL - 7
IS - 10
SP - 788
EP - 793
%@ 1673-1581
Y1 - 2006
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.2006.B0788


Abstract: 
The interaction of salinity stress and plant residue quality on C mineralization kinetics in soil is not well understood. A laboratory experiment was conducted to study the effects of salinity stress on C mineralization kinetics in a soil amended with alfalfa, wheat and corn residues. A factorial combination of two salinity levels (0.97 and 18.2 dS/m) and four levels of plant residues (control, alfalfa, wheat and corn) with three replications was performed. A first order kinetic model was used to describe the C mineralization and to calculate the potentially mineralizable C. The CO2-C evolved under non-saline condition, ranged from 814.6 to 4842.4 mg CO2-C/kg in control and alfalfa residue-amended soils, respectively. Salinization reduced the rates of CO2 evolution by 18.7%, 6.2% and 5.2% in alfalfa, wheat and corn residue-amended soils, respectively. Potentially mineralizable C (C0) was reduced significantly in salinized alfalfa residue-treated soils whereas, no significant difference was observed for control treatments as well as wheat and corn residue-treated soils. We concluded that the response pattern of C mineralization to salinity stress depended on the plant residue quality and duration of incubation.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

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