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A. L. Morée, A. H. W. Beusen, A. F. Bouwman and W. J. Willems Exploring global nitrogen and phosphorus flows in urban wastes during the twentieth century Global Biogeochemical Cycles 27

Version of Record online: 30 AUG 2013 | DOI: 10.1002/gbc.20072

Key Points

  • A global model was made to inventory urban 20th century nutrient flows
  • Global surface water discharge increased ~3.5-fold for N and ~4.5-fold for P
  • At present human excreta and detergents are the major urban nutrient sources

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