Abstract
Debris flow hazard posts a big threat to the main downstream of Jinsha River where a number of huge power stations are under construction. The characteristics of spatial distribution of debris flows and the effect of their sediment yield on the reservoir areas have been studied. An automatic recognition module was developed to extract the geometry of debris flow channels from remote sensing data. Spatial distribution pattern of debris flows is obtained through combining the inventory database and multi-source remote sensing investigation. The distribution of debris flows has high dependency on the various factors including geology, geomorphology, climate, hydrology and human economic activities. The debris flows distributed in the study area are characterized by group and pair distribution, uncompleted deposition fans, highly controlled by faults and tectonic activities, spatial variation between left bank and right bank, and different subdivisions. The sediment yield caused by debris flow activates is evaluated using multi-year observation data from numerous observation stations. Quantitative studies have been performed on the relationship between the sediment yield and the debris flow area. A relatively fix ratio of 2.6 (×104 t/km2) has been found in different subdivisions of main downstream area which shows that the source of sediment discharged into Jinsha River primarily come from debris flow activities. Another ratio is evaluated to represent the transforming possibility of debris flow materials to bed-sediment load and suspended-sediment load in the river. Based on these findings, the potential effect of sediment yield caused by debris flows on reservoir areas is discussed. The zonation map shows the different effect of debris flow sediment on different dam site area which shows a good agreement with variation of debris flow spatial distribution.
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References
Amore E, Modica C, Nearing MA, Santoro VC (2004) Scale effect in USLE and WEPP application for soil erosion computation from three Sicilian basins. J Hydrol 293:1–4
Bartley R, Hawdon A, Post DA, Roth CH (2007) A sediment budget for a grazed semi-arid catchment in the Burdekin Basin, Australia. Geomorphology 87:302–321
Chen Z-J, Liu S-Q (2000) Soil and water loss and its controlling countermeasures in the upper reaches of the Yangtze river. J Soil Water Conserv 14(4):1–5, 11
Chen Z-L, Zhu P-Y (2000) An analysis of relationship between sediment delivery and debris flow in the lower reaches of Jinshajiang River. Nat Disasters J 19(1):84–87
China Institute of Water and Soil Conservation, Yunnan Institute of Geography (1993) 1st debris flow and landslide prevention symposium. Kunming:Yunnan Science and Technology Publishing House
Cui P, Fan W-M, Cao A-M (2000) Debris flow activity and the contribution of river sediment on the lower reaches of the Jinsha River. 2nd Mountain Hazards and Environment and Conservation Symposium of Taiwan and China. Chung Hsing University Press, China
Deng X-G (1997) Characteristic analysis on sedimentation formation and sedimentation transport in Jinsha River Basin. Sichuan water power 16(1):23–25, 45
Du R-H (1993) Prediction and evaluation of soil erosion modulus in Xiajiaba reservoir of Jinsha River. Report of Chengdu Institute of Mountain hazards and environment, CAS
Du R-H (1996) Debris flow observation and its research. Science Publishing House, Beijing
Jia S-W (2007) Land use change and research on sand production by soil erosion in the Xiaojiang River Basin. Doctoral Thesis, Graduate School of the Chinese Academy of Sciences
Lan HX, Zhou CH, Wang LJ, Zhang HY, Li RH (2004) Landslide hazard spatial analysis and prediction using GIS in the Xiaojiang watershed, Yunnan, China. Eng Geol 76(1–2):109–128
Lan HX, Martin CD, Zhou CH (2008) Estimating the size and travel distance of Klapperhorn Mountain Debris flows for risk analysis along railway, Canada. International Journal of sediment. 23(3):275–282
Liu Y (1997) Sediment transportation of Yangze River and Three Gorge sediment problems. Three Gorge Constr 4(7):17–18
Liu Y, Zhang P (1991) Surface erosion and characteristics of river sediment of main sedimentation formation area in the upper reaches of Yangze River. Hydrology 3:6–12
Liu Y, Zhang P (1995) Erosion and river sediment transportation in the upper reach of Yangze River. J Yangze River Sci Coll 12(1):40–44
Lu J-F (1989) Preliminary study of sediment production by erosion and geology geomorphology in catchment in the Yanshan area. Sediment Res 23(1):25–33
Pan J-G (1999) Characteristics of sediment transportation in Jinsha River basin. Sediment Res 40(2):46–49
Takahashi T (1991) Debris flow. Published for International Association for Hydraulic Research by A.A. Balkema, Rotterdam
Tang B-X, Zhang S-C (1992) Research on debris flow. Bull Chin Acad Sci 7(2):119–123
Wang Z-H (1999) Landslides and debris flows in the lower reach of the Jinsha River. Acta Geogr Sin 2:142–149
Wu J-S, Wang C-H, Chen Z-L (1997) Mountain hazard prevention engineering in China. Sichuan Science and Technology Publishing House, Chengdu
You Y, Chen Z-L (2003) Effect of debris flow transportation on bed development in the lower reaches of Xiaojiang River. J Catastrophol 18(2):7–11
Yu J-R, Shi L-R, Feng M-Q, Li R-H (1991) The surface erosion and fluvial silt in the upper reaches of Changjiang River. Soil Water Conserv Bull 11(1):9–17
Zhong D-L (1996) Debris flow along Chengdu–Kunming Railway. Science and Technology Publishing Press, China
Zhong D-L, Liu X-M (1991) Survey report of landslide and debris flow in the lower reach of Jinsha River in Sichuan Province. Soil and Water Conservation Committee of Sichuan Province Report
Acknowledgments
The study work is funded by the Hundred Talents Program Fund of Chinese Academy of Sciences and National Key Technology R&D Program of China (2008BAK50B05) and the Knowledge Innovation Program of the Chinese Academy of Sciences (KZCX2-YW-302). The authors wish to thank Chengdu Institute of Mountain Hazards and Environment, CAS, for research institute of Chinese Academy of Science for helping data collection. We kindly acknowledge Prof. Yong You for the contribution on sampling and analyzing grain distribution.
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Liu, H., Lan, H., Liu, Y. et al. Characteristics of spatial distribution of debris flow and the effect of their sediment yield in main downstream of Jinsha River, China. Environ Earth Sci 64, 1653–1666 (2011). https://doi.org/10.1007/s12665-009-0409-6
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DOI: https://doi.org/10.1007/s12665-009-0409-6