Carbon footprints, mitigation effects and economic performance of dairy farm systems in Inner Mongolia
文献类型： 外文期刊
作者： Wei S.;Ledgard S.;Fan J.;Tian Y.;Dong H.
作者机构：
关键词： Carbon footprint;Dairy farm system;Economic performance;Life cycle assessment;Mitigation options
期刊名称： Agricultural Systems
ISSN： 0308-521X
年卷期： 2024 年 214 卷
页码：
收录情况： SCIE（2024版）
摘要： CONTEXT: Reducing the GHG emissions intensity of milk production has become a key sustainability challenge for the dairy sector. Addressing this challenge requires thorough understanding of the current GHG emission levels of individual farms, the practices influencing GHG emissions, and the economic trade-offs associated with reducing those emissions. OBJECTIVE: Quantify the carbon footprint (CF) and economic performance of milk production in Inner Mongolia (the main dairy farming region in China), and understand the main contributing factors to them. The effects of potential mitigation options at dairy farm system level were evaluated. METHODS: Life cycle assessment methodology was used to analyze the CF of 15 dairy farms (with year-round cow housing and crop feeding) selected for different milk production levels, herd structures and diet composition. RESULTS AND CONCLUSIONS: The average CF per kg of fat and protein corrected milk (FPCM; after allocation to milk) was 2.3 kg carbon dioxide equivalents (CO2-eq) (1.5–3.4 kg CO2-eq). Emissions related to feed production, manure management and enteric fermentation were the top three GHG emission sources and contributed an average of 27% (5%–46%), 28% (19%–38%) and 18% (14%–25%), respectively, to total emissions. The average cost of the farm system per ton FPCM was USD 540 per year. Feed costs dominated at 70% of the total costs. The CF of milk was negatively correlated with profit per kg FPCM. Mitigation potential of the CF of dairy production for single mitigation strategies ranged from 2.3% to 20.0% compared with business as usual, and combined mitigation measures could reduce emissions by 48.3%. The most effective mitigation measures should focus on decreasing N-fertilizer use per ha for feed crop production and increasing feed crop yield, adjusting herd structure for milk productivity and using localized feed inputs. All mitigation measures had a positive impact on farm profit, except for the improved manure management (changing the farms using manure composting to a static compost system and changing natural storage to direct land application). Therefore, the combination of crop and dairy production and manure management offer the greatest potential to reduce the GHG emissions from Inner Mongolia dairy farm systems. Economic subsidies and extension of findings to farmers might encourage more rapid adoption of these technologies. SIGNIFICANCE: The insights from our study can provide guidance for defining and prioritizing mitigation strategies for dairy production to reduce GHGs emission in other rapidly developing countries and regions with crop-based housed-cow dairy production. © 2023
分类号：
- 相关文献
作者其他论文 更多>>
-
Molecular Characteristics, Functional Definitions, and Regulatory Mechanisms for Cross-Presentation Mediated by the Major Histocompatibility Complex: A Comprehensive Review
作者：Liu S.;Wei S.;Sun Y.;Xu G.;Zhang S.;Li J.
关键词：cross-presentation;exogenous antigens;immune response;MHC
-
Liver proteomic analysis of Bai-Hu-Tang treatment to systemic inflammatory response
作者：Zhang S.;Wei S.;Sen L.
关键词：Bai-Hu-Tang;LPS;Ribosomal protein;Ribosome biogenesis;Systemic inflammatory response
-
The dynamic landscape of chromatin accessibility and active regulatory elements in the mediobasal hypothalamus influences the seasonal activation of the reproductive axis in the male quail under long light exposure
作者：Chang J.;Xu Y.;Fu Y.;Liu J.;Jiang D.;Pan J.;Ouyang H.;Liu W.;Xu J.;Tian Y.;Huang Y.;Ruan J.;Shen X.
关键词：（1-2-2）Chromatin accessibility;Coturnix japonica;Seasonal reproduction;Transcription factor
-
Genomic Insights into Seed Germination Differences in Buffalobur (Solanum rostratum Dunal) under Contrasting GA and ABA Availability
作者：Chen Z.;Li L.;Wu K.;Zhao D.;Yang L.;Huang H.;Huang Z.;Wei S.
关键词：endo-β-mannanase;endosperm cap;phytohormone;RNA-Seq;seed dormancy and germination
-
Degradable, anti-swelling, high-strength cellulosic hydrogels via salting-out and ionic coordination
作者：Feng X.;Xing C.;Wang C.;Tian Y.;Shang S.;Liu H.;Huang X.;Jiang J.;Song Z.;Zhang H.
关键词：Cellulosic hydrogels;Motion monitoring;Salting-out
-
Evaluation of seven satellite-based and two reanalysis global terrestrial evapotranspiration products
作者：Xie Z.;Yao Y.;Tang Q.;Liu M.;Fisher J.B.;Chen J.;Zhang X.;Jia K.;Li Y.;Shang K.;Jiang B.;Yang J.;Yu R.;Zhang X.;Guo X.;Liu L.;Ning J.;Fan J.;Zhang L.
关键词：Evaluation methods;Evapotranspiration;Three-cornered hat;Water budget balance method
-
Genome-wide identification and functional analysis of the cellulose synthase-like gene superfamily in common oat (Avena sativa L.)
作者：Zhang S.;Hu H.;Cui S.;Yan L.;Wu B.;Wei S.
关键词：Cellulose synthase-like genes;Gene expression;Genome-wide identification;Oat;Phylogenetic relationships