Memorias de investigación
Artículos en revistas:
Reduction of nutrient losses with eroded sediments by post-fire soil stabilisation techniques
Año:2013
Áreas de investigación
  • Ciencias naturales y ciencias de la salud
Datos
Descripción
After an experimental fire in steep shrubland in a temperate?humid region (north-west Spain), the effects of two post-fire stabilisation treatments (grass seeding and straw mulching) on the chemical properties of eroded sediments, and the amount of nutrients lost with them, were evaluated relative to control burnt soil, over a period of 13 months. TotalC and N concentrations, and d13C, indicated that sediments were mainly contributed by charred plant and litter material. The highest concentrations of extractable base cations in the sediments occurred during the first 3 months following fire, especially for Na and K. As treatments had little or no effect on nutrient concentration in sediments, differences in nutrient losses were due to the 10-fold lower sediment production in mulching compared with other treatments. In control and seeding treatments, the accumulated amounts of nutrients lost with sediments were 989?1028 kg ha ?1 (C), 77 kg ha ?1 (N), 1.9?2.4 kg ha ?1 (Ca), 0.9?1.1 kg ha ?1 (Mg), 0.48?0.55 kg ha ?1 (NH4 þ ?N), 0.39?0.56 kg ha ?1 (K), 0.19?0.34 kg ha ?1 (Na) and ,0.1 kg ha ?1 (P and NO3 ? ?N). These values accounted for 22?25% (total C and N) and 5?12% (NH4 þ ?N, Ca, P and Mg) of available nutrients in ash, and 1.0?2.4% of those in ashþtopsoil. As nutrient and sediment losses were strongly correlated, the reduction of the latter by mulching application leads to an effective decrease of post-fire nutrient losses.
Internacional
No
JCR del ISI
No
Título de la revista
International Journal of Wildland Fire
ISSN
1049-8001
Factor de impacto JCR
Información de impacto
Volumen
DOI
Número de revista
22
Desde la página
696
Hasta la página
706
Mes
SIN MES
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Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Contaminación de agroecosistemas por las prácticas agrícolas
  • Departamento: Química y Análisis Agrícola