| Abstract: | Agricultural soil erosion is thought to perturb the global carbon cycle, but estimates of its effect range from a source of 1 petagram per year -1 to a sink of the same magnitude. By using caesium-137 and carbon inventory measurements from a large-scale survey, we found consistent evidence for an erosion-induced sink of atmospheric carbon equivalent to approximately 26% of the carbon transported by erosion. Based on this relationship, we estimated a global carbon sink of 0.12 (range 0.06 to 0.27) petagrams of carbon per year-1 resulting from erosion in the world‘s agricultural landscapes. Our analysis directly challenges the view that agricultural erosion represents an important source or sink for atmospheric CO2. |
| Genre: | Article |
| ProdID: | 70029856 |
| Citation Author: | Van Oost, K.; Quine, T. A.; Govers, G.; De Gryze, S.; Six, J.; Harden, J. W.; Ritchie, J. C.; McCarty, G. W.; Heckrath, G.; Kosmas, C.; Giraldez, J. V.; Marques, Da, Silva, J. R.; Merckx, R. |
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| Citation End Page: | 629 |
| Citation Issue: | 5850 |
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| Citation Language: | English |
| Citation Larger Work Title: | Science |
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| Citation Number Of Pages: | 4 |
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| Citation Search Results Text: | The impact of agricultural soil erosion on the global carbon cycle; 2007; Article; Journal; Science; Van Oost, K.; Quine, T. A.; Govers, G.; De Gryze, S.; Six, J.; Harden, J. W.; Ritchie, J. C.; McCarty, G. W.; Heckrath, G.; Kosmas, C.; Giraldez, J. V.; Marques, Da, Silva, J. R.; Merckx, R. |
| Citation Start Page: | 626 |
| Citation Volume: | 318 |
| Citation Year: | 2007 |
| Type: | citation/reference |
| Text: | The impact of agricultural soil erosion on the global carbon cycle; 2007; Article; Journal; Science; Van Oost, K.; Quine, T. A.; Govers, G.; De Gryze, S.; Six, J.; Harden, J. W.; Ritchie, J. C.; McCarty, G. W.; Heckrath, G.; Kosmas, C.; Giraldez, J. V.; Marques, Da, Silva, J. R.; Merckx, R. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.1126/science.1145724 |
| Date Other: | Mon, 1 Jan 2007 00:00 -0600 |
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