Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Greenhouse gas balance of mountain dairy farms as affected by grassland carbon sequestration
Recent studies on milk production have often focused on environmental impacts analysed using the Life Cycle Assessment (LCA) approach. In grassland-based livestock systems, soil carbon sequestration might be a potential sink to mitigate greenhouse gas (GHG) balance. Nevertheless, there is no commonly shared methodology. In this work, the GHG emissions of small-scale mountain dairy farms were assessed using the LCA approach. Two functional units, kg of Fat and Protein Corrected Milk (FPCM) and Utilizable Agricultural Land (UAL), and two different emissions allocations methods, no allocation and physical allocation, which accounts for the co-product beef, were considered. Two groups of small-scale dairy farms were identified based on the Livestock Units (LU) reared: <30 LU (LLU) and >30 LU (HLU). Before considering soil carbon sequestration in LCA, performing no allocation methods, LLU farms tended to have higher GHG emission than HLU farms per kg of FPCM (1.94 vs. 1.59 kg CO.sub.2-eq/kg FPCM, P [less than or equal to] 0.10), whereas the situation was reversed upon considering the m.sup.2 of UAL as a functional unit (0.29 vs. 0.89 kg CO.sub.2-eq/m.sup.2, P [less than or equal to] 0.05). Conversely, considering physical allocation, the difference between the two groups became less noticeable. When the contribution from soil carbon sequestration was included in the LCA and no allocation method was performed, LLU farms registered higher values of GHG emission per kg of FPCM than HLU farms (1.38 vs. 1.10 kg CO.sub.2-eq/kg FPCM, P [less than or equal to] 0.05), and the situation was likewise reversed in this case upon considering the m.sup.2 of UAL as a functional unit (0.22 vs. 0.73 kg CO.sub.2-eq/m.sup.2, P [less than or equal to] 0.05). To highlight how the presence of grasslands is crucial for the carbon footprint of small-scale farms, this study also applied a simulation for increasing the forage self-sufficiency of farms to 100%. In this case, an average reduction of GHG emission per kg of FPCM of farms was estimated both with no allocation and with physical allocation, reaching 27.0% and 28.8%, respectively.
Greenhouse gas balance of mountain dairy farms as affected by grassland carbon sequestration
Recent studies on milk production have often focused on environmental impacts analysed using the Life Cycle Assessment (LCA) approach. In grassland-based livestock systems, soil carbon sequestration might be a potential sink to mitigate greenhouse gas (GHG) balance. Nevertheless, there is no commonly shared methodology. In this work, the GHG emissions of small-scale mountain dairy farms were assessed using the LCA approach. Two functional units, kg of Fat and Protein Corrected Milk (FPCM) and Utilizable Agricultural Land (UAL), and two different emissions allocations methods, no allocation and physical allocation, which accounts for the co-product beef, were considered. Two groups of small-scale dairy farms were identified based on the Livestock Units (LU) reared: <30 LU (LLU) and >30 LU (HLU). Before considering soil carbon sequestration in LCA, performing no allocation methods, LLU farms tended to have higher GHG emission than HLU farms per kg of FPCM (1.94 vs. 1.59 kg CO.sub.2-eq/kg FPCM, P [less than or equal to] 0.10), whereas the situation was reversed upon considering the m.sup.2 of UAL as a functional unit (0.29 vs. 0.89 kg CO.sub.2-eq/m.sup.2, P [less than or equal to] 0.05). Conversely, considering physical allocation, the difference between the two groups became less noticeable. When the contribution from soil carbon sequestration was included in the LCA and no allocation method was performed, LLU farms registered higher values of GHG emission per kg of FPCM than HLU farms (1.38 vs. 1.10 kg CO.sub.2-eq/kg FPCM, P [less than or equal to] 0.05), and the situation was likewise reversed in this case upon considering the m.sup.2 of UAL as a functional unit (0.22 vs. 0.73 kg CO.sub.2-eq/m.sup.2, P [less than or equal to] 0.05). To highlight how the presence of grasslands is crucial for the carbon footprint of small-scale farms, this study also applied a simulation for increasing the forage self-sufficiency of farms to 100%. In this case, an average reduction of GHG emission per kg of FPCM of farms was estimated both with no allocation and with physical allocation, reaching 27.0% and 28.8%, respectively.
Greenhouse gas balance of mountain dairy farms as affected by grassland carbon sequestration
Salvador, Sara (Autor:in) / Corazzin, Mirco / Romanzin, Alberto / Bovolenta, Stefano
2017
Aufsatz (Zeitschrift)
Englisch
BKL:
43.00
Grassland and development of the farms specialized in dairy cattle production
| British Library Conference Proceedings | 2001
| Engineering Index Backfile | 1933
| Engineering Index Backfile | 1937
Development and Testing of NDIR-Based Rapid Greenhouse Gas Detection Device for Dairy Farms
| DOAJ | 2024
British Library Online Contents | 1997