Academic Journal
Towards an inventory of methane emissions from manure management that is responsive to changes on Canadian farms
| العنوان: | Towards an inventory of methane emissions from manure management that is responsive to changes on Canadian farms |
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| المؤلفون: | A C VanderZaag, J D MacDonald, L Evans, X P C Vergé, R L Desjardins |
| المصدر: | Environmental Research Letters, Vol 8, Iss 3, p 035008 (2013) |
| بيانات النشر: | IOP Publishing |
| سنة النشر: | 2013 |
| المجموعة: | Directory of Open Access Journals: DOAJ Articles |
| مصطلحات موضوعية: | activity data, emission measurements, liquid manure, methane conversion factor, Environmental technology. Sanitary engineering, TD1-1066, Environmental sciences, GE1-350, Science, Physics, QC1-999 |
| الوصف: | Methane emissions from manure management represent an important mitigation opportunity, yet emission quantification methods remain crude and do not contain adequate detail to capture changes in agricultural practices that may influence emissions. Using the Canadian emission inventory methodology as an example, this letter explores three key aspects for improving emission quantification: (i) obtaining emission measurements to improve and validate emission model estimates, (ii) obtaining more useful activity data, and (iii) developing a methane emission model that uses the available farm management activity data. In Canada, national surveys to collect manure management data have been inconsistent and not designed to provide quantitative data. Thus, the inventory has not been able to accurately capture changes in management systems even between manure stored as solid versus liquid. To address this, we re-analyzed four farm management surveys from the past decade and quantified the significant change in manure management which can be linked to the annual agricultural survey to create a continuous time series. In the dairy industry of one province, for example, the percentage of manure stored as liquid increased by 300% between 1991 and 2006, which greatly affects the methane emission estimates. Methane emissions are greatest from liquid manure, but vary by an order of magnitude depending on how the liquid manure is managed. Even if more complete activity data are collected on manure storage systems, default Intergovernmental Panel on Climate Change (IPCC) guidance does not adequately capture the impacts of management decisions to reflect variation among farms and regions in inventory calculations. We propose a model that stays within the IPCC framework but would be more responsive to farm management by generating a matrix of methane conversion factors (MCFs) that account for key factors known to affect methane emissions: temperature, retention time and inoculum. This MCF matrix would be populated using a mechanistic ... |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 1748-9326 |
| Relation: | https://doi.org/10.1088/1748-9326/8/3/035008; https://doaj.org/toc/1748-9326; https://doaj.org/article/79c7be639c714821bcecd25a18f4cf67 |
| DOI: | 10.1088/1748-9326/8/3/035008 |
| الاتاحة: | https://doi.org/10.1088/1748-9326/8/3/035008 https://doaj.org/article/79c7be639c714821bcecd25a18f4cf67 |
| رقم الانضمام: | edsbas.21FD9332 |
| قاعدة البيانات: | BASE |
Full Text Finder | تدمد: | 17489326 |
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| DOI: | 10.1088/1748-9326/8/3/035008 |