An optimized crop–livestock system can achieve a safe and just planetary boundary for phosphorus at the sub-basin level in China,Nature Food

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An optimized crop–livestock system can achieve a safe and just planetary boundary for phosphorus at the sub-basin level in China
Nature Food ( IF 23.6 ) Pub Date : 2024-06-07 , DOI: 10.1038/s43016-024-00977-0
Ling Liu ₁ , Zhaohai Bai ₁ , Jing Yang ₁ , Zengwei Yuan _{2,

3} , Fei Lun ₄ , Mengru Wang ₅ , Maryna Strokal ₅ , Carolien Kroeze ₅ , Zhenling Cui ₆ , Xinping Chen ₇ , Lin Ma _{1,

2,

7}

Affiliation

The contribution of crop and livestock production to the exceedance of the planetary boundary for phosphorus (P) in China is still unclear, despite the country’s well-known issues with P fertilizer overuse and P-related water pollution. Using coupled models at sub-basin scales we estimate that livestock production increased the consumption of P fertilizer fivefold and exacerbated P losses twofold from 1980 to 2017. At present, China’s crop–livestock system is responsible for exceeding what is considered a ‘just’ threshold for fertilizer P use by 30% (ranging from 17% to 68%) and a ‘safe’ water quality threshold by 45% (ranging from 31% to 74%) in 25 sub-basins in China. Improving the crop–livestock system will keep all sub-basins within safe water quality and just multigenerational limits for P in 2050.

更新日期：2024-06-07

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