Abstract
Agriculture is a significant source of GHGs globally and ruminant livestock animals are one of the largest contributors to these emissions, responsible for an estimated 14% of GHGs (CH4 and N2O combined) worldwide. A large portion of GHG fluxes from agricultural activities is related to CH4 emissions from ruminants. Both direct and indirect methods are available. Direct methods include enclosure techniques, artificial (e.g. SF6) or natural (e.g. CO2) tracer techniques, and micrometeorological methods using open-path lasers. Under the indirect methods, emission mechanisms are understood, where the CH4 emission potential is estimated based on the substrate characteristics and the digestibility (i.e. from volatile fatty acids). These approximate methods are useful if no direct measurement is possible. The different systems used to quantify these emission potentials are presented in this chapter. Also, CH4 from animal waste (slurry, urine, dung) is an important source: methods pertaining to measuring GHG potential from these sources are included.
| Original language | English |
|---|---|
| Title of host publication | Measuring Emission of Agricultural Greenhouse Gases and Developing Mitigation Options using Nuclear and Related Techniques |
| Subtitle of host publication | Applications of Nuclear Techniques for GHGs |
| Publisher | Springer International Publishing AG |
| Pages | 177-211 |
| Number of pages | 35 |
| ISBN (Electronic) | 9783030553968 |
| ISBN (Print) | 9783030553951 |
| DOIs | |
| Publication status | Published - 30 Jan 2021 |
Keywords
- Animals
- CH4
- Direct and indirect emission
- GHGs
- SF6
ASJC Scopus subject areas
- General Environmental Science
- General Engineering
- General Agricultural and Biological Sciences
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