Ammonia and nitrous oxide interactions: Roles of manure organic matter management

作者：Petersen Soren O^*; Sommer Sven G

来源：Animal Feed Science and Technology, 2011, 166-67: 503-513.

DOI：10.1016/j.anifeedsci.2011.04.077

• Ammonia
• Nitrous oxide
• Digestion
• Separation
• Acidification
• Mitigation

Intensification of livestock production in many parts of the world has led to increasing atmospheric losses of N in connection with storage and field application of manure. Both types of emissions are influenced by manure organic matter content via mechanisms such as composting, crust formation, mineralization-immobilization turnover, and water retention. Manure management affects the potential for, and balance between, NH(3) and N(2)O emissions. The interaction between NH(3) and N(2)O may be positive (e.g., both emissions are reduced by an airtight cover during storage and stimulated by composting), or negative (e.g., direct N(2)O emissions from soil will potentially increase if losses of NH(3) are prevented during storage or field application). Emissions of NH(3) and N(2)O negatively affect N use efficiency and the greenhouse gas (GHG) balance of livestock production. Ammonia and N(2)O emissions and GHG balances of manure management, and the mitigation potential of individual and combined measures to prevent emissions, are calculated for dairy cattle with an emission factor approach. A more precise determination of overall N(2)O and NH(3) emissions requires a model that accounts for the complex interactions between C and N transformations at each stage of the manure management chain in a time scale that is relevant for management practices such as retention time in housing and storage, treatment to optimize nutrient management, and timing of field application. Modelling emissions of N(2)O from field applied manure is a particular challenge due to the heterogeneity in distribution of O(2) supply and O(2) demand which is introduced.
This article is part of the special issue entitled: Greenhouse Gases in Animal Agriculture Finding a Balance between Food and Emissions, Guest Edited by TA. McAllister, Section Guest Editors: K.A. Beauchemin, X. Hao, S. McGinn and Editor for Animal Feed Science and Technology, P.H. Robinson.

• 出版日期2011-6-23