Changing views of nitrous oxide emissions from agricultural soil: key controlling processes and assessment at different spatial scales

2017 ◽  
Vol 68 (2) ◽  
pp. 137-155 ◽  
Author(s):  
K. A. Smith
Keyword(s):  
Nitrous Oxide ◽  
Agricultural Soil ◽  
Spatial Scales ◽  
Nitrous Oxide Emissions ◽  
Controlling Processes

scholarly journals Intensive field measurements of nitrous oxide emissions from a tropical agricultural soil

2000 ◽  
Vol 14 (1) ◽  
pp. 85-95 ◽  
Author(s):  
P. M. Crill ◽  
M. Keller ◽  
A. Weitz ◽  
B. Grauel ◽  
E. Veldkamp
Keyword(s):  
Nitrous Oxide ◽  
Agricultural Soil ◽  
Field Measurements ◽  
Nitrous Oxide Emissions

Plant diversity decreases potential nitrous oxide emissions from restored agricultural soil

Pedobiologia ◽  
2020 ◽  
Vol 83 ◽  
pp. 150670
Author(s):  
Drew A. Scott ◽  
Kathryn D. Eckhoff ◽  
Sara G. Baer
Keyword(s):  
Nitrous Oxide ◽  
Plant Diversity ◽  
Agricultural Soil ◽  
Nitrous Oxide Emissions

Carbon Dioxide and Nitrous Oxide Emissions following Fall and Spring Applications of Pig Slurry to an Agricultural Soil

2004 ◽  
Vol 68 (4) ◽  
pp. 1410-1420 ◽  
Author(s):  
Philippe Rochette ◽  
Denis A. Angers ◽  
Martin H. Chantigny ◽  
Normand Bertrand ◽  
Denis Côté
Keyword(s):  
Carbon Dioxide ◽  
Nitrous Oxide ◽  
Agricultural Soil ◽  
Nitrous Oxide Emissions ◽  
Pig Slurry

Nitrous and nitric oxide emissions during nitrification and denitrification from manure-amended soil in the laboratory

1993 ◽  
Vol 73 (4) ◽  
pp. 539-553 ◽  
Author(s):  
J. W. Paul ◽  
E. G. Beauchamp ◽  
X. Zhang
Keyword(s):  
Nitric Oxide ◽  
Nitrous Oxide ◽  
Agricultural Soil ◽  
Laboratory Experiments ◽  
Nitrous Oxide Emissions ◽  
Nitric Oxide Production ◽  
Moisture Contents ◽  
Major Producer ◽  
Nitric Oxide Emissions ◽  
No Emissions

Denitrification and nitrification processes in soil produce significant amounts of atmospheric N2O and NO. Laboratory experiments were designed to measure N2O and NO emissions from an agricultural soil shortly after manure addition. Nitrous oxide emissions were higher from soil following addition of manure slurries than following addition of composted manure. Emissions of both N2O and NO were highest between 1 and 4 d after manure addition. Nitrous oxide emission following manure application was the result of both denitrification and nitrification, which occurred simultaneously in soil. Denitrification was a major producer of N2O because both denitrification rates and N2O emission increased dramatically at higher soil-moisture contents and increased manure concentration. Nitric oxide production occurred during nitrification. Nitrous oxide emitted during the 6 d after manure addition ranged from 0.025 to 0.85% of the manure N. Nitric oxide emissions were approximately 0.26% of the amount of added manure N.Key words: Nitrous oxide, nitric oxide, manure, denitrification, nitrification

scholarly journals Biochar Is Comparable to Dicyandiamide in the Mitigation of Nitrous Oxide Emissions from Camellia oleifera Abel. Fields

Forests ◽  
2019 ◽  
Vol 10 (12) ◽  
pp. 1076 ◽  
Author(s):  
Bangliang Deng ◽  
Haifu Fang ◽  
Ningfei Jiang ◽  
Weixun Feng ◽  
Laicong Luo ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Agricultural Soil ◽  
Fold Increase ◽  
N Fertilization ◽  
Nitrous Oxide Emissions ◽  
N2o Emissions ◽  
Nitrification Inhibitors ◽  
Camellia Oleifera ◽  
N Application ◽  
Oil Plant

Research Highlights: Intensive nitrogen (N) application for agricultural purposes has substantially increased soil nitrous oxide (N2O) emissions. Agricultural soil has great potential in the reduction of N2O emissions, and applications of biochar and nitrification inhibitors may be useful for mitigating agricultural soil N2O emissions. Background and Objectives: Camellia oleifera Abel. is an important woody oil plant in China. However, intensive N input in C. oleifera silviculture has increased the risk of soil N2O emissions. As an important greenhouse gas, N2O is characterized by a global warming potential at a 100-year scale that is 265 times that of carbon dioxide. Thus, mitigation of soil N2O emissions, especially fertilized soils, will be crucial for reducing climate change. Materials and Methods: Here, we conducted an in situ study over 12 months to examine the effects of C. oleifera fruit shell-derived biochar and dicyandiamide (DCD) on soil N2O emissions from a C. oleifera field with intensive N application. Results: A three-fold increase of cumulative soil N2O emissions was observed following N application. Cumulative N2O emissions from the field with N fertilization were reduced by 36% and 44% with biochar and DCD, respectively. While N2O emissions were slightly deceased by biochar, the decrease was comparable to that by DCD. Conclusions: Results indicated that biochar may mitigate soil N2O emissions substantially and similarly to DCD under specific conditions. This result should be examined by prolonged and multi-site studies before it can be generalized to broader scales.

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