The DOI matches its Crossref record; 4 of the 4 references it cites were found in a registry or an index.
A high-resolution assessment on global nitrogen flows in cropland
Open accessAbstract
Crop production is the single largest cause of human alteration of the global nitrogen cycle. We present a comprehensive assessment of global nitrogen flows in cropland for the year 2000 with a spatial resolution of 5 arc-minutes. We calculated a total nitrogen input (IN) of 136.60 trillion grams (Tg) of N per year, of which almost half is contributed by mineral nitrogen fertilizers, and a total nitrogen output (OUT) of 148.14 Tg of N per year, of which 55% is uptake by harvested crops and crop residues. We present high-resolution maps quantifying the spatial distribution of nitrogen IN and OUT flows, soil nitrogen balance, and surface nitrogen balance. The high-resolution data are aggregated at the national level on a per capita basis to assess nitrogen stress levels. The results show that almost 80% of African countries are confronted with nitrogen scarcity or nitrogen stress problems, which, along with poverty, cause food insecurity and malnutrition. The assessment also shows a global average nitrogen recovery rate of 59%, indicating that nearly two-fifths of nitrogen inputs are lost in ecosystems. More effective management of nitrogen is essential to reduce the deleterious environmental consequences.
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Cites
Agricultural sustainability and intensive production practices
Tilman, D., Cassman, K. G., Matson, P. A., Naylor, R., & Polasky, S. (2002) · Nature · doi:10.1038/nature01014 · Cited by 7,957
Nitrogen cycles: Past, present, and future
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Farming the planet: 1. Geographic distribution of global agricultural lands in the year 2000
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Nitrogen and food production: proteins for human diets
Smil, V. (2002) · AMBIO: A Journal of the Human Environment · doi:10.1579/0044-7447-31.2.126 · Cited by 490
Cited by
Solutions for a cultivated planet
Foley, J. A., Ramankutty, N., Brauman, K. A., Cassidy, E. S., Gerber, J. S., Johnston, M., Mueller, N. D., O’Connell, C., Ray, D. K., West, P. C., et al. (2011) · Nature · doi:10.1038/nature10452 · Cited by 8,476
Reducing food's environmental impacts through producers and consumers
Poore, J., & Nemecek, T. (2018) · Science · doi:10.1126/science.aaq0216 · Cited by 6,085
Managing nitrogen for sustainable development.
Zhang, X., Davidson, E. A., Mauzerall, D. L., Searchinger, T. D., Dumas, P., & Shen, Y. (2015) · Nature · doi:10.1038/nature15743 · Cited by 3,054
Kummu, M., de Moel, H., Porkka, M., Siebert, S., Varis, O., & Ward, P. J. (2012) · Science of The Total Environment · doi:10.1016/j.scitotenv.2012.08.092 · Cited by 1,300
Herrero, M., Havlík, P., Valin, H., Notenbaert, A., Rufino, M. C., Thornton, P. K., Blümmel, M., Weiss, F., Grace, D., & Obersteiner, M. (2013) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.1308149110 · Cited by 1,254
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Metadata
- Authors
- Liu, J., You, L., Amini, M., Obersteiner, M., Herrero, M., Zehnder, A. J. B., & Yang, H.
- Venue
- Proceedings of the National Academy of Sciences
- Published
- 2010-04-12
- Volume
- 107
- Issue
- 17
- Pages
- 8035-8040
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- OpenAlex
- W2013548909
- Cited by
- 620
- References
- 4
- FWCI
- 17.34
- Type
- journal article
- Language
- en
- Open access
- green
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- Liu, J., You, L., Amini, M., Obersteiner, M., Herrero, M., Zehnder, A. J. B., & Yang, H. (2010). A high-resolution assessment on global nitrogen flows in cropland. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.0913658107
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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