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[1]GUO Xiaoyun,LIU Zhihui,YAO Junqiang,et al.Sediment Discharge Change and Its Affecting Factors of Small Watershed on the Northern Slope of Tianshan Mountains—Taking Hutubi River Basin as an Example[J].Research of Soil and Water Conservation,2016,23(01):145-149,154.

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Sediment Discharge Change and Its Affecting Factors of Small Watershed on the Northern Slope of Tianshan Mountains—Taking Hutubi River Basin as an Example

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 23 Number of periods: 2016 01 Page number: 145-149,154 Column: Public date: 2016-02-28

Title:: Sediment Discharge Change and Its Affecting Factors of Small Watershed on the Northern Slope of Tianshan Mountains—Taking Hutubi River Basin as an Example

Author(s):: GUO Xiaoyun^1,2, LIU Zhihui^1,2,3,4, YAO Junqiang^1,2,3, WEI Tianfeng^1,2; 1. School of Resources and Environment Science, Xinjiang University, Urumqi 830046, China;
2. Key Laboratory of Oasis Ecology, Ministry of Education, Xinjiang University, Urumqi 830046, China;
3. Institute of Arid Ecology and Environment, Xinjiang University, Urumqi 830046, China;
4. International Center for Desert Affairs-Research on Sustainable Development in Arid and Semi-arid Lands, Urumqi 830046, China

Keywords:: sediment; runoff; Hutubi River Basin

CLC:: P333.4

DOI:: -

Abstract:: According to the measured daily runoff, sediment load and precipitation data of the Shimen hydrological station of Hutubi River Basin during the period from 1980 to 2011, we used the non-parametric Mann-Kendall trends and mutation test, and the double cumulative curve method to investigate Hutubi River monthly and annual sediment load trends and possible mutation time, and explore the factors that may affect Hutubi River sediment load change. The results show that Hutubi River Basin sediment distribution in a year is very uneven, continuous maximum four-month (June to September) sediment load accounted for 94.61% of annual sediment load; sediment load in July is the largest, accounting 60.83% of the annual sediment load; annual sediment load were increased during the period from 1980 to 2011, on the interannual scales it shows periodically changes of alternating wet and dry; and the mutation happened in 1989. Sediment load is influenced by the combined effects of runoff, rainfall, large reservoirs and soil erosion; runoff is the major factor affecting the amount of sediment. The watershed dry climate, low vegetation coverage and the human over exploitation of coal resources in the upper reaches of the mountain area make sediment load increase quickly in the mountainous region when the rainstorm floods occur suddenly.

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