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A winter rainfall simulation study of sediment and phosphorus loss in arable land in Denmark

Schiøtz, I. G. ; Veihe, A. ; Miyashita, T. ; Larsen, J.

Geografisk tidsskrift, 2006-01, Vol.106 (1), p.57-69 [Periódico revisado por pares]

København: Taylor & Francis Group

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  • Título:
    A winter rainfall simulation study of sediment and phosphorus loss in arable land in Denmark
  • Autor: Schiøtz, I. G. ; Veihe, A. ; Miyashita, T. ; Larsen, J.
  • Assuntos: Bgi / Prodig ; Europe ; phosphorus ; Physical geography ; rainfall simulation ; Scandinavian States. Finland ; soil erosion
  • É parte de: Geografisk tidsskrift, 2006-01, Vol.106 (1), p.57-69
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
  • Descrição: Geografisk Tidsskrift, Danish Journal of Geography 106(1):57-69, 2006 Most of the Danish freshwater environments do not live up to the high ecological standards set by the European Water Framework Directive. This is mainly due to high phosphorus loadings originating from agricultural areas. Phosphorus pollution caused by soil erosion is generally considered to be insignificant in Denmark, even though soils are rich in phosphorus. There have only been a few erosion monitoring programs conducted in Denmark resulting in little specific data. This paper presents the results of a rainfall simulation study with a low rainfall intensity of 10 mm h −1 conducted in winter conditions in the Haraldsted catchment on Zealand. The test nozzle (Hardi 37E) proved suitable for generating kinetic energy to represent yearly recurring rainstorm events in eastern Denmark. A correlation of sediment and phosphorus loss (total phosphorus (TP), dissolved phosphorus (DP) and dissolved reactive phosphorus (DRP)) compared to different physical soil parameters showed a dependency of soil loss when compared to runoff while total phosphorus could be correlated with both the soil loss and total runoff. Carbon and initial soil conditions were important parameters in determining runoff and soil loss. The average concentration of particulate phosphorus when compared to the total P in runoff was 95.8%. To calculate the percent of DRP of TP in runoff, a multivariate linear regression model was determined. The average phosphorus enrichment ratio was found to be 2.25 but the variation of phosphorus concentration in the eroded sediment was high. In 91% of all the runoff samples, the critical load of DRP was exceeded which may indicate that eroded sediment may pose a potential risk of eutrophication of Danish water bodies.
  • Editor: København: Taylor & Francis Group
  • Idioma: Inglês;Dinamarquês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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