ArticleProceedings of the National Academy of Sciences of the United States of America2023
Modeling global oceanic nitrogen deposition from food systems and its mitigation potential by reducing overuse of fertilizers.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed, 45 citations in OpenAlex.
- Integrated climate effects on nitrogen cycles in global grasslands.Science advances · 2026Article
- Optimizing the application of pig manure in crop rotation systems: a comprehensive assessment of crop yield, quality, and soil safety.BMC plant biology · 2026Article
- NPKGRIDS: a global georeferenced dataset of N, PScientific data · 2024Article
- Ammonia mitigation campaign with smallholder farmers.Nature food · 2023Article
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Authors and funding
15 authors at 9 institutions in 2 countries.
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Abstract
Growing population and consumption pose unprecedented demands on food production. However, ammonia emissions mainly from food systems increase oceanic nitrogen deposition contributing to eutrophication. Here, we developed a long-term oceanic nitrogen deposition dataset (1970 to 2018) with updated ammonia emissions from food systems, evaluated the impact of ammonia emissions on oceanic nitrogen deposition patterns, and discussed the potential impact of nitrogen fertilizer overuse. Based on the chemical transport modeling approach, oceanic ammonia-related nitrogen deposition increased by 89% globally between 1970 and 2018, and now, it exceeds oxidized nitrogen deposition by over 20% in coastal regions including China Sea, India Coastal, and Northeastern Atlantic Shelves. Approximately 38% of agricultural nitrogen fertilizer was excessive, which corresponds to 15% of global oceanic ammonia-related nitrogen deposition. Policymakers and water quality managers need to pay increasingly more attention to ammonia associated with food production if the goal of reducing coastal nitrogen pollution is to be achieved for Sustainable Development Goals.
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