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(Article of periodic en Anglais - 2014)

Document title

Runoff features of pasture and crop slopes at different rainfall intensities, antecedent moisture contents and gradients on the Chinese Loess Plateau : A solution of rainfall simulation experiments

Authors(s) and Affiliation(s)

ZHAO X. (1 2 4) ; HUANG J. (3 4) ; GAO X. (1 2 4) ; WU P. (1 2 4) ; WANG J. (3 4) ;
(1) Inst. of Soil and Water Conservation, Northwest A & F Univ., Yangling, CHINE
(2) Inst. of Soil and Water Conservation, Chinese Academy of Science and Ministry of Water Resources, Shaanxi, Yangling, CHINE
(3) College of Water Resources and Architectural Engineering, Northwest A&F Univ., Yangling, CHINE
(4) National Engineering Research Center for Water Saving Irrigation, Yangling, CHINE

Abstract

This study focused on 2 widely-planted pastures including ryegrass (Lolium perenne L) and alfalfa (Medicago sativa L) and one common crop spring wheat (Triticum aestivum L), and investigated their runoff features at soil boxes under different rainfall intensities, antecedent moisture contents and slope gradients through rainfall simulation experiments. And bare ground was set as control. The results indicated that the presence of vegetation delayed time to runoff and reduced runoff coefficient. Time to runoff showed a negative and exponential relationship with rainfall intensity and antecedent moisture content and a negative and linear relationship with gradient. Runoff coefficient indicated a positive and linear relationship with rainfall intensity and antecedent moisture content and a positive and power–function relationship with gradient. The results presented here could provide insights into understanding the effects of rainfall intensity, slope gradient, and antecedent moisture content on surface runoff for the Loess Plateau region

Source

Article of periodic

published at : Catena / ISSN 0341-8162

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

Millesime : 2014, no119 [pp. 90-96]

Bibliographic references : 45 ref.

Collation : 8 fig., 6 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2014.03.007

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
Refdoc record number (ud4) : 28681539 : Permanent link - XML version
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