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Application of the Denitrification-Decomposition Model to Predict Carbon Dioxide Emissions under Alternative Straw Retention Methods
Joint Authors
Chen, Can
Chen, Deli
Pan, Jianjun
Lam, Shu Kee
Source
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-12-25
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Medicine
Information Technology and Computer Science
Abstract EN
Straw retention has been shown to reduce carbon dioxide (CO2) emission from agricultural soils.
But it remains a big challenge for models to effectively predict CO2 emission fluxes under different straw retention methods.
We used maize season data in the Griffith region, Australia, to test whether the denitrification-decomposition (DNDC) model could simulate annual CO2 emission.
We also identified driving factors of CO2 emission by correlation analysis and path analysis.
We show that the DNDC model was able to simulate CO2 emission under alternative straw retention scenarios.
The correlation coefficients between simulated and observed daily values for treatments of straw burn and straw incorporation were 0.74 and 0.82, respectively, in the straw retention period and 0.72 and 0.83, respectively, in the crop growth period.
The results also show that simulated values of annual CO2 emission for straw burn and straw incorporation were 3.45 t C ha−1 y−1 and 2.13 t C ha−1 y−1, respectively.
In addition the DNDC model was found to be more suitable in simulating CO2 mission fluxes under straw incorporation.
Finally the standard multiple regression describing the relationship between CO2 emissions and factors found that soil mean temperature (SMT), daily mean temperature (Tmean), and water-filled pore space (WFPS) were significant.
American Psychological Association (APA)
Chen, Can& Chen, Deli& Pan, Jianjun& Lam, Shu Kee. 2013. Application of the Denitrification-Decomposition Model to Predict Carbon Dioxide Emissions under Alternative Straw Retention Methods. The Scientific World Journal،Vol. 2013, no. 2013, pp.1-7.
https://search.emarefa.net/detail/BIM-1013029
Modern Language Association (MLA)
Chen, Can…[et al.]. Application of the Denitrification-Decomposition Model to Predict Carbon Dioxide Emissions under Alternative Straw Retention Methods. The Scientific World Journal No. 2013 (2013), pp.1-7.
https://search.emarefa.net/detail/BIM-1013029
American Medical Association (AMA)
Chen, Can& Chen, Deli& Pan, Jianjun& Lam, Shu Kee. Application of the Denitrification-Decomposition Model to Predict Carbon Dioxide Emissions under Alternative Straw Retention Methods. The Scientific World Journal. 2013. Vol. 2013, no. 2013, pp.1-7.
https://search.emarefa.net/detail/BIM-1013029
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1013029