A method for estimating the interaction depth of surface soil with simulated rain

Auteur(s) et Affiliation(s)

YANG, T.

State Key lab. Base of Eco-hydraulic in Arid Area, Univ. of Technology, Xi'an, Chine

WANG, Q.

State Key lab. Base of Eco-hydraulic in Arid Area, Univ. of Technology, Xi'an, Chine

State Key Lab. of Soil Erosion and Dryland Farming on the Loess Plateau, Inst. of Soil and Water Conservation, Northwest AandF Univ., Yangling, Chine

XU, D.

State Key lab. Base of Eco-hydraulic in Arid Area, Univ. of Technology, Xi'an, Chine

LV, J.

State Key lab. Base of Eco-hydraulic in Arid Area, Univ. of Technology, Xi'an, Chine

Description :
Soil samples were collected in cultivated fields in the districts of Yangling, Ansai and Shenmu in Shaanxi province on the Loess plateau of China. The effective depth of transfer (EDT) between surface soil and runoff was determined by varying the physical properties of the soil, rain intensities (RIs), slope gradients, initial water contents, and soil amendment. The effects of these factors on the EDT were quantified with simulated rain. Slope gradient accelerated the velocity of water flow and decreased the stabilities of soil particles. The AA. obtained an equation describing the combined effects of the various factors on the EDT by regression analysis. Analyses of root mean square errors and the coefficients of multiple determination indicated that calculated values fit the experimental data very well. This relationship provided a method of estimating the EDT and improved the prediction of the transport of adsorbed chemicals in solution, because current models of chemical transport use fixed values.

Type de document :
Article de périodique

Source :
Catena (Giessen), issn : 0341-8162, 2015, vol. 124, p. 109-118, nombre de pages : 10, Références bibliographiques : 47 ref.

Date :
2015

Editeur :
Pays édition : Allemagne, Cremlingen-Destedt, Catena

Langue :
Anglais