B11H:
Coupling the Nitrogen and Carbon Cycles of Terrestrial Ecosystems: Understanding the Nexus between Land Management and GHG Mitigation Strategies I

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Session ID#: 15227

Session Description:
Soils supports all terrestrial life by provision and moderation of ecosystem functions and food and fiber production. Soils are also being recognized as a sink and source of greenhouse gases (GHGs). In recent years, soil organic carbon maintenance and sequestration through amendments, e.g. cover crop, manure, compost and biochar, have been used to increase soil productivity and general soil health. However, the complex interactions between these organic amendments and N cycling processes such as immobilization, mineralization, ammonia oxidation and denitrification, and the contribution of these interactions to GHGs production and consumption are not well understood but are needed to guide land management with the goal of mitigating GHG emissions and increasing soil productivity and sustainability. This session encourages studies on the drivers, mechanisms and significance of different N cycling processes as affected by soil organic carbon management, as well as the strategies to maximum the benefits of organic amendment application
Primary Convener:  Xia Zhu-Barker, University of California, Davis, Land, Air, and Water Resources, Davis, CA, United States
Conveners:  Matthew John Saunders, Trinity College Dublin, Botany Department, School of Natural Sciences, Dublin, Ireland, William R Horwath, University of California, Davis, Land, Air, and Water Resources, Davis, CA, United States and Lutz Merbold, Agroscope, Agroecology and Environment, Zurich, Switzerland
Chairs:  Xia Zhu-Barker, University of California, Davis, Land, Air, and Water Resources, Davis, CA, United States and William R Horwath, University of California, Davis, Land, Air, and Water Resources, Davis, CA, United States
OSPA Liaison:  Matthew John Saunders, Trinity College Dublin, Botany Department, School of Natural Sciences, Dublin, Ireland
Index Terms:

0414 Biogeochemical cycles, processes, and modeling [BIOGEOSCIENCES]
0428 Carbon cycling [BIOGEOSCIENCES]
0469 Nitrogen cycling [BIOGEOSCIENCES]
0490 Trace gases [BIOGEOSCIENCES]

Abstracts Submitted to this Session:

Nexus Thinking on Soil Carbon Dynamics and Soil Health (Invited) (121155)
Rattan Lal, Ohio State University Main Campus, Columbus, OH, United States
Unintended consequences of carbon enhancement in agricultural soils: The N2O problem (Invited) (121289)
Rodney T Venterea1,2, Florence Breuillin-Sessoms3, John M Baker1,2, Timothy J Griffis2, Kurt Spokas2,4 and Peter A Turner2, (1)USDA/ARS-Soil & Water Mgmt, Saint Paul, United States, (2)University of Minnesota, Soil, Water and Climate, Saint Paul, MN, United States, (3)University of Minnesota Twin Cities, BioTechnology Institute, Saint Paul, MN, United States, (4)USDA/ARS-Soil & Water Mgmt, Saint Paul, MN, United States
Nitrogen Cycling Considerations for Low-Disturbance, High-Carbon Soil Management in Climate-Adaptive Agriculture (198152)
Mary Ann Bruns1, Curtis J Dell2, Heather Karsten3, Arnab Bhowmik1 and John M Regan4, (1)Pennsylvania State University Main Campus, Ecosystem Science and Management, University Park, PA, United States, (2)USDA-ARS, Pasture Systems and Watershed Management Research Unit, University Park, PA, United States, (3)Pennsylvania State University Main Campus, Department of Plant Sciences, University Park, PA, United States, (4)Pennsylvania State University, Environmental Engineering, University Park, PA, United States
Nitrogen Cycling and GHG Emissions of Natural and Managed Tropical Ecosystems at Mt. Kilimanjaro (171745)
Kiese Ralf1, Adrian Gutlein2,3, Friederike Gerschlauer2, Michael Dannenmann4, Klaus Butterbach-Bahl3 and Eugenio Diaz-Pines5, (1)Karlsruhe Institute of Technology, Institute of Meteorology and Climate Change - Atmospheric Environmental Research, Garmisch-Partenkirchen, Germany, (2)Karlsruhe Institute of Technology, Institute for Meterology and Climate Research - Institute for Atmospheric Environmental Research (IMK-IFU), Karlsruhe, Germany, (3)Karlsruhe Institute of Technology, Institute of Meteorology and Climate Research (IMK - IFU), Garmisch - Partenkirchen, Germany, (4)Karlsruhe Institute of Technology, Karlsruhe, Germany, (5)Karlsruhe Institute of Technology, Institute of Meteorology and Climate Research (IMK - IFU), Karlsruhe, Germany
Combined Effect of Management Intensity and Climate Change on the Productivity and Greenhouse Gas Balance of Montane Grassland Ecosystems (174660)
Eugenio Diaz-Pines, Haiyan Lu, Kiese Ralf, Na Wang, Jin Fu, Rainer Gasche, Benjamin Wolf, Klaus Butterbach-Bahl and Michael Dannenmann, Karlsruhe Institute of Technology (KIT), Institute of Meteorology and Climate Research, Atmospheric Environmental Research (IMK-IFU), Garmisch-Partenkirchen, Germany
CH4 and N2O Emissions from Rice Paddy Soils in Vietnam - Identifying Regional Hotspots and Quantifying the Total Emission Strength using a Biogeochemical Model (144025)
Christian Werner1, David Kraus2, Trinh Van Mai3 and Klaus Butterbach-Bahl2, (1)Senckenberg Biodiversity and Climate Research Centre (BiK-F), Frankfurt/Main, Germany, (2)Karlsruhe Institute of Technology, Institute for Meterology and Climate Research - Institute for Atmospheric Environmental Research (IMK-IFU), Garmisch-Partenkirchen, Germany, (3)Vietnam Academy for Agricultural Sciences, Institute for Agricultural Environment (IAE), Hanoi, Vietnam
Soil-Atmosphere Greenhouse Gas Fluxes on the Margins of the Congo Forest: Effects of Forest Conversion towards Smallholder Agricultural Lands and Agricultural Intensification (157813)
Steve Kwatcho Kengdo1, Denis Jean Sonwa2, Charles Baudouin Njine-Bememba2, Liliane Diane Djatsa3, Mariana C. Rufino4, Louis V Verchot5,6, Javier Tejedor7 and Michael Dannenmann8, (1)University of Bayreuth, Bayreuth, Germany, (2)Center for International Forestry Research, Yaoundé, Cameroon, (3)University of Dschang, Dschang, Cameroon, (4)Center for International Forestry Research, Nairobi, Kenya, (5)Center for International Forestry Research, Bogor, Indonesia, (6)International Center for Tropical Agriculture (CIAT), Agroecosystems and Sustainable Landscapes, Cali, Colombia, (7)Karlsruhe Institute of Technology, Institute of Meteorology and Climate Research (IMK - IFU), Garmisch - Partenkirchen, Germany, (8)Karlsruhe Institute of Technology, Karlsruhe, Germany

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