Partitioning product footprint changes into yield and environmental improvement effects: toward life cycle assessment of agricultural system transitions
Partitioning product footprint changes into yield and environmental improvement effects: toward life cycle assessment of agricultural system transitions
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将产品足迹变化划分为产量和环境改善效果：农业系统转型的生命周期评估
DOI：
10.1007/s11367-022-02112-2
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Kiyotada Hayashi
中科院分区：
文献类型：
--
作者：
Kiyotada Hayashi
最近的农业政策要求补充使用基于区域和基于产品的环境指标来评估农业系统转型，因为减轻生产力与环境之间的权衡和提高粮食价值链的可持续性对于成功的政策决策至关重要。然而，由于在表示过渡路径中的权衡和将计算结果与下游食品产品的评估联系起来之间的排他性，存在一个困境。在此，本文提出了一个解决这一困境的程序。方法将产品足迹变化划分为产量和环境改善效应在同一单位。在确定了向农业可持续性过渡的类型之后，划分程序是在从二维空间（基于区域的指标）到一维空间（基于产品的指标）的映射的基础上开发的。为了证明划分过程的有效性和性能，本文以全球变暖（碳足迹）影响类别为例，将其应用于三类农业系统转型，包括有机农业转型、综合生产转型和涉及微生物接种剂和生物刺激素等新型农业投入的生产系统转型。转换数据集（匹配对）是使用书目调查构建的。结果与讨论结果表明，该划分方法是有效的，具有良好的性能：(1)它能够适用于数据集中的所有情况，并将所有情况划分为六种指定的过渡类型；(2)三种过渡类型之间是可区分的；(3)能够解释每个过渡类别的特征。这些结果表明，农业系统转型视角可以与食品价值链视角相结合。因此，农业技术研发阶段的生产力-环境权衡可以与食品价值链上的环境缓解做法联系起来。结论运用分块方法，可以统一解释包含两种不同视角的近期农业政策框架。与农业政策制定相关的每个利益相关者都应该明确农业系统转型期间的产品与环境权衡，以及食品价值链的可持续性。划分过程促进了涉众的实践。
PurposeRecent agricultural policies require the complementary use of area-based and product-based environmental indicators to assess agricultural system transitions because both alleviating productivity-environment trade-offs and increasing food value chain sustainability are crucial in successful policy decisions. However, there is a dilemma due to the exclusiveness between representing trade-offs in the transition paths and connecting the calculated results to the assessment of downstream food products. Here, this paper proposes a procedure to resolve the dilemma.MethodsThe dilemma-resolving procedure is to partition product footprint changes into yield and environmental improvement effects in the same unit as the product footprint. After specifying a typology of transition toward agricultural sustainability, the partitioning procedure was developed on the basis of mapping from a two-dimensional space (area-based indicators) to a one-dimensional space (product-based indicators). To demonstrate the effectiveness and performance of the partitioning procedure, this paper applied it to the three categories of agricultural system transitions, including those to organic agriculture, integrated production, and production systems involving new agricultural inputs such as microbial inoculants and biostimulants, using the cases of the impact category of global warming (carbon footprint). The transition dataset (matched pairs) was constructed using a bibliographical survey.Results and discussionThe results indicate that the partitioning procedure is effective and has good performance: (1) it was able to apply to all the cases in the dataset and to classify all the cases into six specified transition types; (2) it was differentiable between the three transition categories; and (3) it was able to explain the features of each transition category. These results imply that the perspective on agricultural system transitions can be integrated with the perspective on food value chains. Therefore, productivity-environment trade-offs during the research and development phase of agricultural technologies can be linked to environmental mitigation practices along the food value chains.ConclusionsThe results imply that, by applying the partitioning procedure, the recent agricultural policy framework contained two exclusive perspectives can be explained consistently. Every stakeholder related to agricultural policy making should be explicit about product-environment trade-offs during agricultural system transitions, as well as about food value chain sustainability. The partitioning procedure facilitates such stakeholder practices.
影响因子：
6.6
作者：
Haas, G;Wetterich, F;Köpke, U
通讯作者：
Köpke, U
DOI：
10.1016/j.jclepro.2020.125506
发表时间：
2021
期刊：
影响因子：
--
作者：
Petra Vidergar;M. Perc;R. Lukman
通讯作者：
R. Lukman
评估作物生产农业实践变化对生命周期的影响
DOI：
--
发表时间：
2020
期刊：
The International Journal of Life Cycle Assessment
影响因子：
--
作者：
J. Kløverpris;Claus Nordstrøm Scheel;J. Schmidt;B. Grant;W. Smith;M. Bentham
通讯作者：
M. Bentham