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Ammonia Synthesis at Low Pressure
Published on: August 23, 2017
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Potential for mitigating global agricultural ammonia emission: A meta-analysis
Chaopu Ti1, Longlong Xia2, Scott X Chang3
1State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China; Department of Renewable Resources, University of Alberta, Edmonton, AB T6G 2E3, Canada.
Environmental Pollution (Barking, Essex : 1987)
|November 12, 2018
Summary
Effective strategies for reducing ammonia (NH3) emissions from livestock and cropping systems are identified. Implementing tailored agricultural practices globally can significantly minimize NH3 pollution and its environmental impacts.
Area of Science:
- Agricultural Science
- Environmental Science
- Atmospheric Chemistry
Background:
- Ammonia (NH3) emissions from agriculture are a major contributor to air pollution, soil acidification, water eutrophication, biodiversity loss, and public health issues.
- Existing NH3 mitigation strategies show variable effectiveness, and a comprehensive assessment across livestock and cropping systems is lacking.
Purpose of the Study:
- To conduct a global meta-analysis and integrated assessment of NH3 emission reduction measures in agricultural systems.
- To evaluate the effectiveness of various mitigation strategies based on livestock and crop types.
Main Methods:
- Global meta-analysis of existing studies on NH3 emission mitigation.
- Integrated assessment of measures applied to livestock production and cropping systems.
Main Results:
- Dietary additives, urease inhibitors, manure acidification, and deep manure placement show high mitigation potential in livestock systems.
- Manure storage management significantly reduces NH3 emissions (70.0-82.1%).
- In cropping systems, fertilizer type, enhanced efficiency fertilizers, and application methods (e.g., ammonium nitrate, CRF, deep placement) are most effective.
Conclusions:
- Tailored agricultural strategies are crucial for minimizing NH3 emissions globally.
- Future research should investigate the impact of these mitigation measures on greenhouse gas emissions.
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