Mots-clés
Chine ; Erosion des sols ; Erosion hydrique ; Expérimentation ; Humidité du sol ; Loess ; Plateau ; Précipitation ; Pâturage ; Ruissellement ; Shaanxi ; Simulation de pluie ; Sol cultivéChina ; Cultivated land ; Experimentation ; Loess ; Pastureland ; Plateau ; Precipitation ; Rainfall simulation ; Rill wash ; Shaanxi ; Soil erosion ; Soil moisture ; Water erosionChensi ; China ; Chorreo ; Erosión de los suelos ; Erosión hídrica ; Experimentación ; Humedad del suelo ; Loess ; Meseta ; Pasto ; Precipitación ; Simulacíon de lluvia ; Suelo cultivadoRunoff 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
Auteur(s) et Affiliation(s)
ZHAO, X.
Inst. of Soil and Water Conservation, Northwest A and F Univ., Yangling, Chine
Inst. of Soil and Water Conservation, Chinese Academy of Science and Ministry of Water Resources, Shaanxi, Yangling, Chine
National Engineering Research Center for Water Saving Irrigation, Yangling, Chine
HUANG, J.
College of Water Resources and Architectural Engineering, Northwest AandF Univ., Yangling, Chine
National Engineering Research Center for Water Saving Irrigation, Yangling, Chine
GAO, X.
Inst. of Soil and Water Conservation, Northwest A and F Univ., Yangling, Chine
Inst. of Soil and Water Conservation, Chinese Academy of Science and Ministry of Water Resources, Shaanxi, Yangling, Chine
National Engineering Research Center for Water Saving Irrigation, Yangling, Chine
WU, P.
Inst. of Soil and Water Conservation, Northwest A and F Univ., Yangling, Chine
Inst. of Soil and Water Conservation, Chinese Academy of Science and Ministry of Water Resources, Shaanxi, Yangling, Chine
National Engineering Research Center for Water Saving Irrigation, Yangling, Chine
WANG, J.
College of Water Resources and Architectural Engineering, Northwest AandF Univ., Yangling, Chine
National Engineering Research Center for Water Saving Irrigation, Yangling, Chine
Description :
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.
Type de document :
Article de périodique
Source :
Catena (Giessen), issn : 0341-8162, 2014, n°. 119, p. 90-96, nombre de pages : 7, Références bibliographiques : 45 ref.
Date :
2014
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)