A high-resolution assessment on global nitrogen flows in cropland
| cg.contributor.affiliation | International Food Policy Research Institute | en |
| cg.creator.identifier | Liangzhi You: 0000-0001-7930-8814 | |
| cg.creator.identifier | Mario Herrero: 0000-0002-7741-5090 | |
| cg.identifier.doi | https://doi.org/10.1073/pnas.0913658107 | en |
| cg.identifier.project | IFPRI - Environment and Production Technology Division | |
| cg.issn | 0027-8424 | en |
| cg.issn | 1091-6490 | en |
| cg.issue | 17 | en |
| cg.journal | Proceedings of the National Academy of Sciences of the United States of America | en |
| cg.reviewStatus | Internal Review | en |
| cg.subject.ilri | SOILS | en |
| cg.subject.ilri | CROPS | en |
| cg.subject.ilri | AGRICULTURE | en |
| cg.subject.ilri | CROP-LIVESTOCK | en |
| cg.volume | 107 | en |
| dc.contributor.author | Liu, J. | en |
| dc.contributor.author | You, Liangzhi | en |
| dc.contributor.author | Amini, M. | en |
| dc.contributor.author | Obersteiner, Michael | en |
| dc.contributor.author | Herrero, Mario | en |
| dc.contributor.author | Zehnder, A.J.B. | en |
| dc.contributor.author | Yang, H. | en |
| dc.date.accessioned | 2010-04-13T06:01:47Z | en |
| dc.date.available | 2010-04-13T06:01:47Z | en |
| dc.identifier.uri | https://hdl.handle.net/10568/1205 | |
| dc.title | A high-resolution assessment on global nitrogen flows in cropland | en |
| dcterms.abstract | 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. | en |
| dcterms.accessRights | Open Access | |
| dcterms.available | 2010-04-12 | |
| dcterms.bibliographicCitation | 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 107(17): 8035-8040. | en |
| dcterms.description | Mario Herrero is ILRI author | en |
| dcterms.extent | p. 8035-8040 | en |
| dcterms.issued | 2010-04-27 | |
| dcterms.language | en | |
| dcterms.license | Copyrighted; all rights reserved | |
| dcterms.publisher | National Academy of Sciences | en |
| dcterms.replaces | https://ebrary.ifpri.org/digital/collection/p15738coll5/id/340 | en |
| dcterms.subject | nitrogen | en |
| dcterms.subject | plant production | en |
| dcterms.type | Journal Article |
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