[1]HU Weiwei.The Influence of Human Activities on the Runoff and Sediment Load Changes of Hanjiang River[J].Research of Soil and Water Conservation,2016,23(02):157-160,165.
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The Influence of Human Activities on the Runoff and Sediment Load Changes of Hanjiang River
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
23
Number of periods:
2016 02
Page number:
157-160,165
Column:
Public date:
2016-04-28
- Title:
- The Influence of Human Activities on the Runoff and Sediment Load Changes of Hanjiang River
- CLC:
- P349
- DOI:
- -
- Abstract:
- The Hanjiang River development has a long history, especially since the liberation, the intervention of human activities on the river was strong, but there are few researches on influence of human activity on Hanjiang River hydrological processes, runoff and sediment characteristics changes. Chaoan gauging station was selected as the control station, which is located at the junction of the upper and middle reaches of Hanjiang River. From two aspects of runoff and sediment, the study on the impact of human activities on the Hanjiang River runoff changes was carried out. The 1954—2012 year series of annual runoff and precipitation data from Chaoan gauging station and sediment load data from upstream region were adapted. T test results showed that the annual precipitation and runoff in the two periods statistically significantly unchanged, but statistically significant change in sediment discharge occurred in the two periods. The double mass curves of annual precipitation and runoff change in the turning point, as well as the double mass curves of annual precipitation and annual sediment load change in the turning point were used to analyze the impact of human activities on the Hanjiang River runoff and sediment load changes. The results showed that in the 1960s, due to the Wuhe River in the upstream of Meihe River having serious soil erosion, the annual runoff and sediment load of the Hanjiang River increased slightly; since 2009, possibly because of increasing water needs of industry and agriculture along the upstream of the river, there was a slight reduction in the Hanjiang runoff. But since 2006, Chaoan station sediment load significantly reduced. The total sediment reduction amounted to 3.215 19×107 t, the average annual sediment reduction is 4.593 2×106 t. This was mainly due to the construction of Dongshan large dam project on upstream of the Hanjiang River. Second reason is the reduction of sand, soil and water conservation and upstream reservoir storage. This paper aimed to draw attention to water conservancy project construction and provide a theoretical basis for scientific and rational water conservancy construction, environmental protection and rational use of water resources in the Hanjing River basin.
- References:
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