[1]GAO Peng,MU Xing-min,WANG Wei.Trend and Driving Force Analyses of Streamflow and Sediment Discharge in Jialing River[J].Research of Soil and Water Conservation,2010,17(04):57-61,66.
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Trend and Driving Force Analyses of Streamflow and Sediment Discharge in Jialing River
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
17
Number of periods:
2010 04
Page number:
57-61,66
Column:
Public date:
2010-08-20
- Title:
- Trend and Driving Force Analyses of Streamflow and Sediment Discharge in Jialing River
- Keywords:
- Jialing River; streamflow; sediment discharge; flow duration curve
- CLC:
- P332.5
- DOI:
- -
- Abstract:
- The sediment discharge in Jialing River basin has decreased significantly over the past 20 years.This change will have a major impact on the Yangtze River Three Gorges reservoir area of water and sediment movement and changes in sediment yield and deposition.The objectives of this study are to quantify the decreasing trends of precipitation,streamflow and sediment discharge during 1956-2008 and to statistically identify change points or transition years in the changing trends.Results showed that strong decreasing trends in annual streamflow (P=0.05) and sediment discharge (P=0.01) have existed since the late 1950s at Beibei hydrologic station of the Jialing River.Change point analysis reveal that more rapid declines for streamflow began in 1993,and sediment discharge began in 1984 at the stations (P=0.05).Two kinds of methods,namely duration curve and double mass curves,were applied to analyze change of streamflow and sediment discharge in Jialing River basin.The reasons for the trends and change-points in streanflow and sediment discharge were analyzed finally.
- References:
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Last Update:
1900-01-01