Abstract
The Jialing River is one of the main tributaries of the Yangtze River. The average annual runoff accounts for 16% and the sediment load 26% of the total at Yichang therefore it's one of the main contributors of sediment to the Three Gorges Reservoir. Ever since 1989, our country has implemented “Yangtze River soil and water conservation” project, Till the end of 1996, altogether 25.8% of erosion area in Jialing River has been improved after large scale conservation has taken effect. The analysis and comparison between records taken before and after the implementation of soil and water conservation on runoff and sediment yield indicated that the sediment load soil erosion in Jialing river basin has been taken under control to some extent. Amount of annual runoff in main conservations have generally dropped by exponential function. Obvious result has been achieved in Jialing River, efficiency of sand reduction is about 10%–25%. Therefore, sediment to Three Gorges Reservoir is decreased accordingly, and it will be beneficial to take advantage of reservoir's synthetic benefit.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Sediment Technical Expert Group of the State Council TGP Construction Committee.Sediment Technical Expert Group China Yangtze Three Gorges Development Corporation (CT-GPC) [M]. Beijing: Intellectual Property Press, 2002 (Ch).
Changjiang Water Resource Commission.Hydrology Research of TGP [M]. Wuhan: Hubei Science and Technology Press, 1997 (Ch).
He Wenshe.Analyses the Process of Hydrology and Sediment in Three Gorges Reservoir and Design for Its Management Information System [M]. Chengdu: Sichuan University Press, 2004 (Ch).
Zhang Xianbao, Wen Anbang Variations of Sediment in Upper Stream of Yangtze River and Its Tributary [J].Journal of Hydraulic Engineering, 2002, (4): 56–59 (Ch).
Yangtze Upstream Reservoir Sediment Investigation Group.Document Assembly of Basic Statistics on Sediment Deposition In Upstream Yangtze River Reservoirs [R]. Yichang: Hydrology Bureau of Changjiang Water Resource Commission, 1994 (Ch).
Lei Xiaozhang, Cao Shuyou, Dai Hualong,et al. Study on the Benefits of Sediment Reduction and Water Resources Regulation by “Changzhi Project” in the Sichuan Basin [J].Journal of Sediment Research, 2003, (1): 56–59 (Ch).
Critchley C N R, Fowbert J A. Development of Vegetation on Set-Aside Land for up to Nine Years from a Mational Perspective [J].Agric Ecosyst Environ, 2000,79: 159–174.
Arnalds A. Carbon Sequestration—A Powerful Incentive for Combating Desertification [J].Desert Cont Bull, 1999,35: 30–32.
Fullen M A, Booth C A, Brandsma R T. Long-Term Effects of Grass Lay Set Aside on Erosion Rates and Soil Organic Matter on Sandy Soils in East Shropshire [J].Soil & Tillage Research, 2006,89: 122–128.
Boardman J.Public Policy and Soil Erosion in Britain [M]. Chichester: Wiley, 1988: 33–50.
Lowrance R, McIntyre S, Lance C. Erosion and Deposition in a Field/Forest System Estimated Using Caesium-137 Activity [J].Journal of Soil and Water Conservation, 1988,43: 195–198.
Mech S J, Free G A. Movement of Soil during Tillage Operations [J].Agricultural Engineering, 1942,23: 379–382.
Author information
Authors and Affiliations
Corresponding author
Additional information
Foundation item: Supported by the National Basic Research Program of China (973 Program G2003CB415023-3) and Key Project of the Ministry of Education of China (2003-58)
Biography: LEI Xiaozhang (1965-), male, Professor, research direction: river bedload, water and soil conservation, geotechnical.
Rights and permissions
About this article
Cite this article
Xiaozhang, L., Shuyou, C. & Xiaohua, J. Impacts of soil-water conservation in Jialing River on sedimentation of the Three Gorges Reservoir. Wuhan Univ. J. Nat. Sci. 11, 922–928 (2006). https://doi.org/10.1007/BF02830189
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02830189