Chen, Guangnan and Orphant, Simon and Kenman, Sarah J. and Chataway, Robert G. (2005) Life cycle assessment of a representative dairy farm with limited irrigation pastures. In: 4th Australian Conference on Life Cycle Assessment, 23-25 Feb 2005, Sydney, Australia.
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The environmental impacts and the sustainable development of agricultural activities have been identified as a significant national issue. This paper presents an initial assessment of the life cycle impacts of a representative dairy farm with limited irrigation pastures using SimaPro. The functional unit is defined as the production of one litre of raw milk leaving at the farm gate. The input data is described and the limitation of current investigation is identified. It is shown that for this type of farm, most of the environmental impacts (based on the combined single-score method) are due to the energy use by irrigation pump (33%), the use of the urea fertilizer (27%), and the cow methane emissions (21%). Therefore, future improvements should focus on these three factors. It is also found that the contribution to environmental impact from phosphorous fertilizer, potassium fertilizer, truck and tractor are all relatively small, being 1.22%, 0.11%, 3.47% and 2.24% respectively. In terms of the single-issue indicator of climate change, the contribution from the cow methane emissions is very significant at 76.2%.
|Item Type:||Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)|
|Uncontrolled Keywords:||LCA; milk; pasture; dairy farm; SimaPro; Australia; methane; emissions; fertilisers|
|Subjects:||300000 Agricultural, Veterinary and Environmental Sciences > 300900 Land, Parks and Agriculture Management > 300902 Land and Parks Management
300000 Agricultural, Veterinary and Environmental Sciences > 300900 Land, Parks and Agriculture Management > 300901 Farm Management, Rural Management and Agribusiness
300000 Agricultural, Veterinary and Environmental Sciences > 300800 Environmental Sciences > 300804 Environmental Impact Assessment
|Depositing User:||epEditor USQ|
|Date Deposited:||11 Oct 2007 00:18|
|Last Modified:||02 Jul 2013 22:31|
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