Mots-clés
Charge en solution ; Chine ; Erosion des sols ; Erosion hydrique ; Loess ; Modèle ; Plateau ; Ruissellement ; Shaanxi ; Splash ; Transport sédimentaireChina ; Loess ; Model ; Plateau ; Rill wash ; Sediment transport ; Shaanxi ; Soil erosion ; Solution load ; Splash ; Water erosionCarga en solución ; Chensi ; China ; Chorreo ; Erosión de los suelos ; Erosión hídrica ; Loess ; Meseta ; Modelo ; Splash ; Transporte sedimentarioA simple model for the transport of soil-dissolved chemicals in runoff by raindrops
Auteur(s) et Affiliation(s)
DONG, W.
College of Water Conservancy and Architecture, Northeast Agricultural Univ., Heilongjiang, Harbin, Chine
State Key Lab. of Soil Erosion and Dryland Farming on the Loes Plateau, Inst. of Soil and Water Conservation, CAS, Univ., Yangling, Chine
WANG, Q.
Inst. of Water resources, Univ. Technology, Xi an, Chine
State Key Lab. of Soil Erosion and Dryland Farming on the Loes Plateau, Inst. of Soil and Water Conservation, CAS, Univ., Yangling, Chine
ZHOU, B.
Inst. of Water resources, Univ. Technology, Xi an, Chine
SHAN, Y.
State Key Lab. of Soil Erosion and Dryland Farming on the Loes Plateau, Inst. of Soil and Water Conservation, CAS, Univ., Yangling, Chine
Description :
The development of a physically based model to simulate the transport of soil solutes in runoff has provided a better understanding of the mechanisms of transport and has assisted in the development of effective methods to control nutrient loss from soils and the pollution of waterways. Assuming that the exchange rate is controlled by raindrop splash, the AA. neglected the effects of diffusion. To calibrate their model, laboratory experiments were conducted on disturbed loessial soil with 3 initial soil-moisture contents under 3 rainfall intensities and 3 slope gradients. The model's simulated data agreed well with the experimental data, demonstrating that the refined model captured the temporal behaviour of solute transport in the runoff. This study provides a new approach to the modelling of chemical transport by investigating the effects of raindrops on sediments from soil in surface runoff.
Type de document :
Article de périodique
Source :
Catena (Giessen), issn : 0341-8162, 2013, vol. 101, p. 129-135, nombre de pages : 7, Références bibliographiques : 47 ref.
Date :
2013
Editeur :
Pays édition : Allemagne, Cremlingen-Destedt, Catena
Langue :
Anglais
Anglais
Droits :
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)