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N-pool in volcanic ash-derived soils in Chile and its changes in deforested sites

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2002-08
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Borie B., Gilda
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N-pool in volcanic ash-derived soils in Chile and its changes in deforested sites
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Author
  • Borie B., Gilda;
  • Peirano V., Pedro;
  • Zunino Venegas, Hugo;
  • Aguilera S., S. María;
Abstract
Changes in N-distribution patterns in volcanic-ash of Chile after deforestation of a primary forest were measured. There is a clear tendency towards the depletion of N linked to high molecular weight fractions (humin, humic acid fractions) after the disturbance. These changes are illustrated schematically in relation to N input and output and to rhizosphere behavior after deforestation. N-pool and its pattern distribution within soil organic macromolecules is postulated to be a good indicator of N-dynamics in soils, which could be applied to detect soil deterioration processes. As an experimental model, it is proposed to characterize organic-N as N-fulvic, N-humic, N-humin and light organic-N.
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URI: https://repositorio.uchile.cl/handle/2250/120884
ISSN: 0038-0717
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SOIL BIOLOGY & BIOCHEMISTRY 34(8): 1201-1206
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