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(Article of periodic en Anglais - 2012)

Document title

Interrill erosion of carbon and phosphorus from conventionally and organically farmed Devon silt soils

published at : Experiments in Earth surface process research

Authors(s) and Affiliation(s)

KUHN N.J. (1) ; ARMSTRONG E.K. (1) ; LING A.C. (2) ; CONNOLLY K.L. (2) ; HECKRATH G. (3) ;
(1) Dep. of Environmental Sciences, Univ., Basel, SUISSE
(2) Sediment Research Facility, Univ., Exeter, ROYAUME-UNI
(3) Univ., Aarhus, DANEMARK

Abstract

In this study, the P and organic C content of sediment generated from 2 Devon silts under conventional (CS) and organic (OS) soil management were examined. Artificial rainfall was applied to the soils using 2 rainfall scenarios of differing intensity and kinetic energy to determine the effects on the P and C enrichment in interrill sediment. Interrill soil erodibility was lower on the OS, irrespective of rainfall intensity. Sediment from both soils showed a significant enrichment in P and C compared to the bulk soil. A comparison of soil and sediment properties indicates that crusting, P and C content as well as density and size of eroded aggregate fragments control P and C enrichment. Due to complex and dynamic interactions between P, soil organic carbon (SOC) and interrill erosional processes, the nutrient and C status of sediments cannot be predicted based on soil P content, SOC or interrill erodibility alone

Source

Thematical fascicle

published at : Catena / ISSN 0341-8162

Editor : Catena, Cremlingen-Destedt - ALLEMAGNE (1973)

Millesime : 2012, vol. 91 [pp. 94-103]

Bibliographic references : 88 ref.

Collation : fig., tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2010.10.002

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2012
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