Biology

  • Irrigated agriculture has important implications for achieving the United Nations Sustainable
    Development Goals. However, there is a lack of systematic and quantitative analyses of its
    impacts on food–energy–water–CO2 nexus. Here we studied impacts of irrigated agriculture
    on food–energy–water–CO2 nexus across food sending systems (the North China Plain
    (NCP)), food receiving systems (the rest of China) and spillover systems (Hubei Province,
    affected by interactions between sending and receiving systems), using life cycle assessment,
    model scenarios, and the framework of metacoupling (socioeconomic-environmental interactions
    within and across borders). Results indicated that food supply from the NCP promoted
    food sustainability in the rest of China, but the NCP consumed over four times more
    water than its total annual renewable water, with large variations in food–energy–water–CO2
    nexus across counties. Although Hubei Province was seldom directly involved in the
    food trade, it experienced substantial losses in water and land due to the construction of
    the South-to-North Water Transfer Project which aims to alleviate water shortages in the
    NCP. This study suggests the need to understand impacts of agriculture on
    food–energy–water–CO2 nexus in other parts of the world to achieve global sustainability.

  • Center for Systems Integration and Sustainability, Department of Fisheries and Wildlife, Michigan State University, East Lansing, MI, 48823, USA

    Source: https://www.nature.com/articles/s41467-020-19520-3

    Courtesy: https://www.nature.com

    Copyright: doi.org/10.1038/s41467-020-19520-3 © The Author(s) 2020

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