Optimization of China's pig production system to reduce environmental impacts based on a data envelopment and life cycle analysis model

Optimization of China's pig production system to reduce environmental impacts based on a data envelopment and life cycle analysis model
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基于数据包络和生命周期分析模型优化中国生猪生产体系以减少环境影响

DOI:
10.1016/j.resconrec.2022.106483
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发表时间:
2022
期刊:
Conservation and Recycling
影响因子:
--
通讯作者:
Liu, Mingda
Liu, Mingda
中科院分区:
--
文献类型:
--
作者:
Sun, Ruoyu;Liu, Xianjun;Li, Dabing;Zhuang, Jie;Qi, Shengrui;Meng, Bo;Liu, Mingda

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生猪生产体系对全球气候和环境具有重大影响;我国生猪生产系统每年排放的温室气体(GHG)占世界畜牧业温室气体排放量的4%以上。本研究应用DEA和LCA方法结合我国生猪生产统计,比较优化前后各阶段的环境影响,旨在测算生猪生产系统的资源投入和能源消耗,实现更低的投资和更高的效率。结果表明,优化后的方法可减少每头猪的能量消耗55.69 MJ;全球变暖、环境酸化、富营养化环境影响潜力分别下降1.56%、0.6%和0. 072%。以2018年中国生猪养殖市场为例,共销售生猪69382.4万头,优化后的温室气体减排量相当于生产1.92812×105辆汽车的温室气体排放量。
Pig production system has significant impacts on global climate and environment; the greenhouse gas (GHG) annual emission from China's pig production system accounts for more than 4% of which from world's animal husbandry. This study applied DEA and LCA methods with statistics of China's pig production, compared the environmental impact in each stage before and after optimization, aimed to calculate the resource input and energy consumption in pig production system, and realize lower investment and higher efficiency. The results showed that the optimized method could reduce 55.69 MJ energy consumption from each pig; the environmental impact potential of global warming, environmental acidification and eutrophication decreased by 1.56%, 0.6% and 0. 072%. Considering the Chinese pig breeding market in 2018 as an example, with a total of 693.824 million pigs sold, the optimized GHG emission reduction would be equivalent to the GHG emitted by producing 1.92812 × 105vehicles.
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