Nitrogen mass balance in the Brazilian Amazon: an update
The main purpose of this study is to perform a nitrogen budget survey for the entire Brazilian Amazon region. The main inputs of nitrogen to the region are biological nitrogen fixation occurring in tropical forests (7.7 Tg.yr-1), and biological nitrogen fixation in agricultural lands mainly due to t...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Instituto Internacional de Ecologia
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| Series: | Brazilian Journal of Biology |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842012000400007&lng=en&tlng=en |
| _version_ | 1811198132995751936 |
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| author | LA Martinelli AS Pinto GB Nardoto JPHB Ometto S Filoso LD Coletta EC Ravagnani |
| author_facet | LA Martinelli AS Pinto GB Nardoto JPHB Ometto S Filoso LD Coletta EC Ravagnani |
| author_sort | LA Martinelli |
| collection | DOAJ |
| description | The main purpose of this study is to perform a nitrogen budget survey for the entire Brazilian Amazon region. The main inputs of nitrogen to the region are biological nitrogen fixation occurring in tropical forests (7.7 Tg.yr-1), and biological nitrogen fixation in agricultural lands mainly due to the cultivation of a large area with soybean, which is an important nitrogen-fixing crop (1.68 Tg.yr-1). The input due to the use of N fertilizers (0.48 Tg.yr-1) is still incipient compared to the other two inputs mentioned above. The major output flux is the riverine flux, equal to 2.80 Tg.yr-1 and export related to foodstuff, mainly the transport of soybean and beef to other parts of the country. The continuous population growth and high rate of urbanization may pose new threats to the nitrogen cycle of the region through the burning of fossil fuel and dumping of raw domestic sewage in rivers and streams of the region. |
| first_indexed | 2024-04-12T01:26:36Z |
| format | Article |
| id | doaj.art-c1e1890ff1be42978daa04328a97d4a8 |
| institution | Directory Open Access Journal |
| issn | 1678-4375 |
| language | English |
| last_indexed | 2024-04-12T01:26:36Z |
| publisher | Instituto Internacional de Ecologia |
| record_format | Article |
| series | Brazilian Journal of Biology |
| spelling | doaj.art-c1e1890ff1be42978daa04328a97d4a82022-12-22T03:53:39ZengInstituto Internacional de EcologiaBrazilian Journal of Biology1678-4375723 suppl68369010.1590/S1519-69842012000400007S1519-69842012000400007Nitrogen mass balance in the Brazilian Amazon: an updateLA Martinelli0AS Pinto1GB Nardoto2JPHB Ometto3S Filoso4LD Coletta5EC Ravagnani6Universidade de São PauloUniversidade de BrasíliaUniversidade de BrasíliaInternational Geosphere Biosphere ProgrammeUniversity of MarylandUniversidade de São PauloUniversidade de São PauloThe main purpose of this study is to perform a nitrogen budget survey for the entire Brazilian Amazon region. The main inputs of nitrogen to the region are biological nitrogen fixation occurring in tropical forests (7.7 Tg.yr-1), and biological nitrogen fixation in agricultural lands mainly due to the cultivation of a large area with soybean, which is an important nitrogen-fixing crop (1.68 Tg.yr-1). The input due to the use of N fertilizers (0.48 Tg.yr-1) is still incipient compared to the other two inputs mentioned above. The major output flux is the riverine flux, equal to 2.80 Tg.yr-1 and export related to foodstuff, mainly the transport of soybean and beef to other parts of the country. The continuous population growth and high rate of urbanization may pose new threats to the nitrogen cycle of the region through the burning of fossil fuel and dumping of raw domestic sewage in rivers and streams of the region.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842012000400007&lng=en&tlng=ennitrogen balanceAmazonbiological nitrogen fixationland use changesurbanization |
| spellingShingle | LA Martinelli AS Pinto GB Nardoto JPHB Ometto S Filoso LD Coletta EC Ravagnani Nitrogen mass balance in the Brazilian Amazon: an update Brazilian Journal of Biology nitrogen balance Amazon biological nitrogen fixation land use changes urbanization |
| title | Nitrogen mass balance in the Brazilian Amazon: an update |
| title_full | Nitrogen mass balance in the Brazilian Amazon: an update |
| title_fullStr | Nitrogen mass balance in the Brazilian Amazon: an update |
| title_full_unstemmed | Nitrogen mass balance in the Brazilian Amazon: an update |
| title_short | Nitrogen mass balance in the Brazilian Amazon: an update |
| title_sort | nitrogen mass balance in the brazilian amazon an update |
| topic | nitrogen balance Amazon biological nitrogen fixation land use changes urbanization |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842012000400007&lng=en&tlng=en |
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