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Article: [N.sub.2]O and [N.sub.2] emissions from pasture and wetland soils with and without amendments of nitrate, lime and zeolite under laboratory condition.(Report)
- Article from:
- Australian Journal of Soil Research
- Article date:
- September 1, 2008
- Author:
CopyrightCOPYRIGHT 2008 CSIRO Publishing. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Introduction
Nitrous oxide, a potent greenhouse and ozone ([O.sub.3])-depleting gas, constitutes ~17.5 of New Zealand's total greenhouse gas emissions inventory (MfE 2007). Microbial processes in soil that produce [N.sub.2]O include nitrification (Inubushi et al. 1996), denitrification (Tiedje 1988; Firestone and Davidson 1989), and dissimilatory N[O.sub.3.sup.-] reduction to N[H.sub.4.sup.+] (DNRA) (Silver et al. 2001). All these processes can occur in soils and sediments across the landscape. Nitrification, strictly an aerobic process, produces [N.sub.2]O as byproduct during N[H.sub.4.sup.+]oxidation to nitrite (N[O.sub.2.sup.-]) and N[O.sub.3.sup.-] (Firestone ...