Flow–sediment relationship as functions of spatial and temporal scales in hilly areas of the Chinese Loess Plateau

Auteur(s) et Affiliation(s)

ZHENG, M.

Key Lab. of Water Cycle and Related Land Surface Processes, Inst. of Geographic Sciences and Natural Resources Research, CAS, Beijing, Chine

YANG, J.

Yellow River Inst. of Hydraulic Research, YRCC, Zhengzhou, Chine

QI, D.

Key Lab. of Water Cycle and Related Land Surface Processes, Inst. of Geographic Sciences and Natural Resources Research, CAS, Beijing, Chine

SUN, L.

Key Lab. of Water Cycle and Related Land Surface Processes, Inst. of Geographic Sciences and Natural Resources Research, CAS, Beijing, Chine

CAI, Q.

Key Lab. of Water Cycle and Related Land Surface Processes, Inst. of Geographic Sciences and Natural Resources Research, CAS, Beijing, Chine

Description :
Based on data observed at gauging stations and runoff experimental plots, the AA. examined the flow-sediment relationship in the context of spatio-temporal scales for hilly loess areas, China. Firstly, the AA. examined the flow-sediment relationship at 3 spatial scales (plot, sub-watershed and watershed) and 3 timescales (intra-event, inter-event and annual) for hilly loess areas. For comparison between the loess Plateau and other regions, they also fit the flow-sediment relationship using power regressions, which is widely used to model the flow-sediment relationship, besides proportional and linear regressions. Then, they made a discussion on the general applicability of the proportional model and evaluated the runoff-sediment yield relationship for the Walnut Gulch Experimental watershed of USA, where sediment flux is generally transport-limited, as with in their case of the Loess Plateau.

Type de document :
Article de périodique

Source :
Catena (Giessen), issn : 0341-8162, 2012, vol. 98, p. 29-40, nombre de pages : 12, Références bibliographiques : 1 p.

Date :
2012

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

Langue :
Anglais