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Article Index
Introduction
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 1. R. Lal, Science 304, 1623 (2004).
2. C. Steiner et al., Plant and Soil 291, 275 (2007).
3. W. Zech, L. Haumaier, R. Hempfling, in Humic substances in soil and crop sciences; selected readings, P. McCarthy, C. E. Clapp, R. L. Malcolm, P. R. Bloom, Eds. (American Society of Agronomy and Soil Science Society of America, Madi-son, 1990), pp. 187-202.
 4. P. Falkowski et al., Science 290, 291 (2000).
5. R. K. Dixon et al., Science 263, 185 (1994).
6. W. F. Ruddiman, Climatic Change 61, 261 (2003).
7. R. Lal, Critical Reviews in Plant Sciences 22, 151 (2003).
8. IPCC, “Fourth Assessment Report, Climate Change 2007: Synthesis Report” (IPCC, 2007).
9. J. G. Goldammer, in Fire in the Environment: The Ecological Atmospheric, and Climatic Importance of Vegetation Fires, P. J. Crutzen, J. G. Goldammer, Eds. (John Wiley & Sons Ltd, 1993), pp. 297-314.
10. C. P. Giardina, R. L. Sanford, I. C. Dockersmith, V. J. Jaramillo, Plant and Soil 220, 247 (2000).
 11. D. Hölscher, B. Ludwig, R. F. Möller, H. Fölster, Agriculture Ecosystems & Environment 66, 153 (1997).
12. M. C. Silva-Forsberg, P. M. Fearnside, in Management and Rehabilitation of Degraded Lands and Secondary Forests in Amazonia, J. A. Parrotta, M. Kanashiro, Eds. (International Institute of Tropical Forestry, Rio Piedras, 1995), pp. 90-95.
13. C. L. Feller, L. J.-M. Thuriés, R. J. Manlay, P. Robin, E. Frossard, J. Plant Nutr. Soil Sci. 166, 687 (2003).
14. R. J. Manlay, C. Feller, M. J. Swift, Agriculture Ecosystems & Environment 119, 217 (2007).
15. R. Lal, R. F. Follett, B. A. Stewart, J. M. Kimble, Soil Science 172, 943 (2007).
16. W. I. Woods, in Papers and Proceedings of the Applied Geography Conferences, F. A. Schoolmaster, Ed. (Applied Geo-graphy Conferences, Denton, Texas, 1995), vol. 18, pp. 158-165.
17. B. Glaser, G. Guggenberger, L. Haumaier, W. Zech, in Sustainable management of soil organic matter, R. M. Rees, B. C. Ball, C. D. Campbell, C. A. Watson, Eds. (CABI Publishing, Wallingford, 2001), pp. 190-194.
18. H. N. Lima, C. E. R. Schaefer, J. W. V. Mello, R. J. Gilkes, J. C. Ker, Geoderma 110, 1 (2002).
19. W. G. Sombroek, F. O. Nachtergaele, A. Hebel, Ambio 22, 417 (Nov, 1993).
20. D. R. Sauerbeck, Nutrient Cycling in Agroecosystems 60, 253 (2001).
21. W. Zech, G. Guggenberger, in Humic substances in terrestrial ecosystems, A. Piccolo, Ed. (Elsevier, 1996).
22. J. Skjemstad, paper presented at the Net Ecosystem Exchange Workshop Proceedings, Canberra ACT 2601, Australia, 18-20 April 2001 2001.
23. J. O. Skjemstad, D. C. Reicosky, A. R. Wilts, J. A. McGowan, Soil Science Society of America Journal 66, 1249 (Jul-Aug, 2002).
24. C. Steiner, W. G. Teixeira, W. Zech, in Amazonian Dark Earths: Explorations in Space and Time, B. Glaser, W. I. Woods, Eds. (Springer Verlag, Heidelberg, 2004), pp. 183-193.
25. P. M. Fearnside, P. M. Lima, A. Graça, F. J. A. Rodrigues, Forest Ecology and Management 146, 115 (2001).
26. J. Lehmann, J. Gaunt, M. Rondon, Mitigation and Adaptation Strategies for Global Change 11, 403 (2006).
27. J. Lehmann et al., Plant and Soil 249, 343 (2003).
28. C. Steiner et al., Journal of Plant Nutrition and Soil Science, (2008).
29. C. Steiner, W. G. Teixeira, J. Lehmann, W. Zech, in Amazonian Dark Earths: Explorations in Space and Time, B. Glaser, W. I. Woods, Eds. (Springer Verlag, Heidelberg, 2004), pp. 195-212.
30. J. J. Birk, Diplomarbeit, University of Bayreuth (2005).
31. D. D. Warnock, J. Lehmann, T. W. Kuyper, M. C. Rillig, Plant and Soil 300, 9 (2007).
32. M. A. Rondon, J. Lehmann, J. Ramirez, M. Hurtado, Biology and Fertility of Soils DOI 10.1007/s00374-006-0152-z, (2007).
33. J. Lehmann, M. Rondon, in Biological Approaches to Sustainable Soil Systems, N. U. e. al., Ed. (CRC Press, Boca Raton, FL, USA, 2006), pp. 517-530.
34. R. Lal, Environment International 31, 575 (2005).
35. R. Lal, Soil & Tillage Research 96, 1 (2007).
36. R. Lal, Soil Sci Soc Am J 71, 1425 (2007).
37. R. Lal, D. Pimentel, Soil & Tillage Research 93, 237 (2007).
38. H. Blanco-Canqui, R. Lal, Geoderma 141, 355 (2007).
39. D. R. Sauerbeck, Nutrient Cycling in Agroecosystems 60, 253 (2001).
40. J. Goudriaan, in Carbon sequestration in the biosphere. Processes and prospects., M. A. Beran, Ed. (Springer Verlag, Heidelberg, Berlin, 1995), vol. 33, pp. 3-18.
41. P. M. Fearnside, Climatic Change 35, 321 (1997).
 42. M. Bernoux et al., in The biogeochemistry of the Amazon basin, M. E. McClain, R. L. Victoria, J. E. Richey, Eds. (Oxford University Press, New York, 2001), pp. 165-184.
43. C. Palm et al., Environment, Development and Sustainability 6, 145 (2004).

 
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