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Permanent link (DOI): https://doi.org/10.7939/R38M1X

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Greenhouse Gas Emissions Following Tillage Reversal on a Black Chernozem and a Gray Luvisol in Alberta Open Access

Descriptions

Other title
Subject/Keyword
N2O
Offset
Notill
Chernozem
Luvisol
Tillage
CO2
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Shahidi, Begum MR
Supervisor and department
Dyck, Miles (Renewable Resources)
Examining committee member and department
Chanasyk, David (Renewable Resources)
Good, Allen (Biological Sciences)
Department
Department of Renewable Resources
Specialization
Soil Science
Date accepted
2012-09-27T10:58:00Z
Graduation date
2012-09
Degree
Master of Science
Degree level
Master's
Abstract
Agricultural soils under long-term no till management have been well known to sequester atmospheric carbon in soil organic matter and to reduce emissions of greenhouse gases. Our study aimed at quantifying CO2 and N2O emissions from Black Chernozems and Gray Luvisols managed under long-term (~ 30 years) no till after tillage reversal. Our study revealed that both CO2 and N2O emissions were stimulated by tillage reversal. Comparative studies showed that the short-term rates of CO2 and N2O emissions after tillage reversal were higher than the historical rates of sequestration after the adoption of long term no till. Since the time scales for comparing the sequestration and emission rates were so different, these results are expected and reasonable. These results indicate that increased soil carbon storage resulting from changes in agricultural management practices is reversible and that the potential for carbon sequestration is dependent on the long-term trends of management practices.
Language
English
DOI
doi:10.7939/R38M1X
Rights
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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