CONTRIBUTIONS OF TUNNEL EROSION TO SEDIMENT YIELD IN A SEMI-ARID BASIN IN THE LOESS PLATEAU OF CHINA |
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| Authors: | TX ZHU QG CAI and SHLUK Dr |
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| Institution: | T.X. ZHU,Q.G. CAI and S.H.LUK3 Dr.,Department of Geography,University of Minnesota-Duluth,Duluth,MN55812,USA. Tel: 218-724-8480. Fax: 218-726-6386. Email: tzhu@d.umn.edu Researcher,Institute of Geography,Chinese Academy of Sciences,Beijing,100 |
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| Abstract: | To evaluate the geomorphic significance of piping and tunnel erosion in basin sediment yield in semiarid areas, we conducted a field monitoring program in Yangdaogou, a subbasin in the hilly loess region in the Loess Plateau of China in 1989 and 1990. Six tunnel systems were monitored through fifteen flow events. Overall, 57% of total basin sediment was routed through tunnel systems and net tunnel erosion accounted for about 25% of total sediment production of the basin. This study suggests that tunnel erosion can be highly significant in basin sediment delivery and hillslope development in send-arid areas. |
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| Keywords: | Tunnel erosion Loess Plateau Semi-arid areas |
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