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International Journal of Environment Science and Technology
Center for Environment and Energy Research and Studies (CEERS)
ISSN: 1735-1472
EISSN: 1735-2630
Vol. 5, No. 2, 2008, pp. 149-160
Bioline Code: st08018
Full paper language: English
Document type: Research Article
Document available free of charge

International Journal of Environment Science and Technology, Vol. 5, No. 2, 2008, pp. 149-160

 en Flow and high sediment yield from the Huangfuchuan watershed
Sui, J.; He, Y. & Karney, B. W.

Abstract

This study deals with general features of sediment transport in the Huangfuchuan river, an important branch river of the Yellow river, draining the Loess Plateau in China. The long-term precipitation records at 3 climate stations near the watershed have been used to assess the changes in precipitation in this region. By introducing metrics for runoff and sediment transport, long-term observations on discharge and sediment concentration at the Huangfuchuan gauging station on the Huangfuchuan river have been used to assess the changes in runoff and sediment transport in the Huangfuchuan River compared with those at the Toudaoguai and Fugu gauging stations on the Yellow river. It is found that both runoff and sediment metrics have a clearly downward trend. From July to August, the long-term sediment transport modulus at the Huangfuchuan gauging station is much higher than those at the Toudaoguai and Fugu stations on the Yellow river. The long-term average sediment transport modulus at the Huangfuchuan gauging station are high, ranging from 14000. t/(km2 y) but decreasing to 5900 t/(km2 y) over the last 10 years . Additionally, analyses on grain size distribution of suspended load in the Huangfuchuan and Yellow river have been conducted.

Keywords
Grain size, loess plateau, precipitation, runoff modulus, sediment transport modulus, soil erosion, Yellow river

 
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