B33A:
Can We Differentiate the Effects of Climate and Management Practices on Nitrous Oxide Emissions From Agricultural Land? I

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Session Title - en français: Peut-on Différencier les Effets des Pratiques Culturales de Ceux du Climat sur les Émissions d'Oxyde Nitreux d'Origine Agricole?

Session ID#: 6856

Session Description:
Some management practices have been shown to mitigate nitrous oxide emissions (N2O) from agricultural land while maintaining the productivity. However, their impact on N2O emission reduction varies greatly across climatic regions, soil types and even according to climatic sequences for a given location. In some cases not enough measurements are available to capture the spatial heterogeneity and episodic nature of N2O fluxes to arrive at any concrete conclusion. In this session, we will discuss options for using measurements and tools, such as empirical and process-based models, for discerning the effects that management practices have on N2O emissions and how they are modulated by climate sequences for given soil properties. A discussion group at the end of the session will be formed to summarise the management options that can reliably predict changes in N2O emissions, and the most important gaps in data and analyses regarding management effects on N2O emissions.
OSPA Liaison:  Andrew VanderZaag, Agriculture and Agri-Food Canada, Science and Technology Branch, Ottawa, ON, Canada
Chairs:  Eric A Davidson, University of Maryland Center (UMCES) for Environmental Science, Frostburg, United States and Elizabeth Pattey, Agriculture and Agri-Food Canada, Science and Technology Branch, Ottawa, ON, Canada
Primary Convener:  Elizabeth Pattey, Agriculture and Agri-Food Canada, Science and Technology Branch, Ottawa, ON, Canada
Convener:  Eric A Davidson, University of Maryland Center (UMCES) for Environmental Science, Frostburg, United States
Index Terms:

0402 Agricultural systems [BIOGEOSCIENCES]
0414 Biogeochemical cycles, processes, and modeling [BIOGEOSCIENCES]
0452 Instruments and techniques [BIOGEOSCIENCES]
0469 Nitrogen cycling [BIOGEOSCIENCES]
Co-Sponsor(s):
  • AS - Atmospheric Sciences

Abstracts Submitted to this Session:

B33A-01
Challenges in Disentangling the Links Between Weather and Management Effects on Nitrous Oxide Emissions in Cold Climates (Invited) (34291)
Claudia Wagner-Riddle1, Shannon Elizabeth Brown1 and Diego Abalos2, (1)University of Guelph, School of Environmental Sciences, Guelph, ON, Canada, (2)University of Guelph, Guelph, ON, Canada
B33A-02
Separating the interacting effects of climate, fertilization and crop on N2O emissions: Results from a 4-year multi-site field study of energy crops fertilized with fermentation residues in Germany (33764)
Ulrike Hagemann1, Sebastian Fiedler2, Gawan Heintze3, Marcus Rohwer4, Madlen Pohl1, Monique Andres1 and Jürgen Augustin5, (1)Leibniz Centre for Agricultural Landscape Research (ZALF) e.V., Institute of Landscape Biogeochemistry, Müncheberg, Germany, (2)University of Rostock, Landscape Ecology and Site Evaluation, Rostock, Germany, (3)Hochschule Weihenstephan-Triesdorf, Chair of Vegetation Ecology, Freising, Germany, (4)Christian-Albrechts-University Kiel, Institute for Plant Nutritrion and Soil Science, Kiel, Germany, (5)Leibniz Centre for Agricultural Landscape Research (ZALF) e.V., Müncheberg, Germany
B33A-03
Separating Weather and Management Effects on Nitrous Oxide Emissions for a Cropping System in Manitoba (35260)
Mario Tenuta1, Xiaopeng Gao1, Brian D Amiro1 and Claudia Wagner-Riddle2, (1)University of Manitoba, Department of Soil Science, Winnipeg, MB, Canada, (2)University of Guelph, School of Environmental Sciences, Guelph, ON, Canada
B33A-04
Interaction between Synthetic N Fertilization and Rainfall on Nitrous Oxide Emissions in Spring Wheat Fields Measured using Flux Towers and Estimated using DNDC and STICS Models (36691)
Cassandre Gaudnik1, Elizabeth Pattey2, Ward Smith2, Brian Grant2 and Joel Leonard3, (1)Agriculture & Agri-Food Canada, Fredericton, NB, Canada, (2)Agriculture & Agri-Food Canada, Science and Technology Branch, Ottawa, ON, Canada, (3)INRAE, AgroImpact, Laon, France
B33A-05
Opportunities and Challenges for Characterizing the Impact of Agricultural Management on Nitrous Oxide Emissions Using Two Prominent GHG Models (36093)
Ward Smith1, Brian Grant1, Elizabeth Pattey1, Ray Desjardins2, Baishali Dutta2, Mario Tenuta3 and Claudia Wagner-Riddle4, (1)Agriculture and Agri-Food Canada, Science and Technology Branch, Ottawa, ON, Canada, (2)Agriculture and Agri-Food Canada, Ottawa, ON, Canada, (3)University of Manitoba, Department of Soil Science, Winnipeg, MB, Canada, (4)University of Guelph, School of Environmental Sciences, Guelph, ON, Canada
B33A-06
Long-term nitrous oxide (N2O) fluxes in the upper Midwest USA: A comparison between annual and perennial systems (33981)
Ilya Gelfand, Ben-Gurion University, Midreshet Ben-Gurion, Israel, Iurii Shcherbak, Queensland University of Technology, School of Natural Resource Sciences, Brisbane, Australia, Neville Millar, Michigan State University, Hickory Corners, MI, United States, Alexandra N Kravchenko, Michigan State University, Department of Plant, Soil, and Microbial Sciences, East Lansing, MI, United States and G Philip Robertson, Michigan State University, East Lansing, MI, United States
B33A-07
Does Meta-analysis Adequately Assess the Interaction of the 4Rs of Crop Nutrition with Climate and Other Factors Impacting Nitrous Oxide Emissions? (Invited) (34935)
Clifford S Snyder and Tom Bruulsema, International Plant Nutrition Institute, Conway, AR, United States
B33A-08
Challenges and Opportunities for Mitigating N2O Emissions In Fertilized Cropping Systems (Invited) (33853)
Rodney T Venterea, USDA/ARS-Soil & Water Mgmt, Saint Paul, United States; University of Minnesota, Soil, Water and Climate, Saint Paul, MN, United States
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