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    Societal benefits of halving agricultural ammonia emissions in China far exceed the abatement costs

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    Author
    Zhang, X; Gu, B; van Grinsven, H; Lam, SK; Liang, X; Bai, M; Chen, D
    Date
    2020-08-31
    Source Title
    Nature Communications
    Publisher
    NATURE PUBLISHING GROUP
    University of Melbourne Author/s
    Gu, Baojing; Lam, Shu; Chen, Deli; Liang, Xia
    Affiliation
    Agriculture and Food Systems
    Metadata
    Show full item record
    Document Type
    Journal Article
    Citations
    Zhang, X., Gu, B., van Grinsven, H., Lam, S. K., Liang, X., Bai, M. & Chen, D. (2020). Societal benefits of halving agricultural ammonia emissions in China far exceed the abatement costs. NATURE COMMUNICATIONS, 11 (1), https://doi.org/10.1038/s41467-020-18196-z.
    Access Status
    Open Access
    URI
    http://hdl.handle.net/11343/251547
    DOI
    10.1038/s41467-020-18196-z
    Abstract
    Mitigating agricultural ammonia (NH3) emissions in China is urgently needed to avoid further damage to human and ecosystem health. Effective and feasible mitigation strategies hinge on integrated knowledge of the mitigation potential of NH3 emissions and the associated economic costs and societal benefits. Here we present a comprehensive analysis of marginal abatement costs and societal benefits for NH3 mitigation in China. The technical mitigation potential of agricultural NH3 emissions is 38-67% (4.0-7.1 Tg N) with implementation costs estimated at US$ 6-11 billion. These costs are much lower than estimates of the overall societal benefits at US$ 18-42 billion. Avoiding unnecessary fertilizer use and protein-rich animal feed could provide 30% of this mitigation potential without additional abatement costs or decreases in agricultural productivity. Optimizing human diets with less animal-derived products offers further potential for NH3 reduction of 12% by 2050.

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