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Article

Changes of Flow and Sediment Transport in the Lower Min River in Southeastern China under the Impacts of Climate Variability and Human Activities

1
State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering Sciences, Hohai University, Nanjing 210000, China
2
Nanjing Hydraulic Research Institute, Nanjing 210000, China
3
Bureau of Hydrology and Water Resources of Fujian Province, Fuzhou 350000, China
*
Author to whom correspondence should be addressed.
Academic Editor: Silvia Kohnová
Water 2021, 13(5), 673; https://doi.org/10.3390/w13050673
Received: 31 December 2020 / Revised: 15 February 2021 / Accepted: 26 February 2021 / Published: 2 March 2021
(This article belongs to the Special Issue Hydrological Modeling in Water Cycle Processes)
The Min River is the largest river in Fujian Province in southeastern China. The construction of a series of dams along the upper reaches of the Min River, especially the Shuikou Dam, which started filling in 1993, modified the flow processes at the lower Min River, leading to the significant increase in low-flows and slightly decrease in flood-flows. At the same time, reservoirs have more effects on the sediment transport process than flow process by trapping most sediment in the reservoirs, and greatly reduced the amount of sediment transporting downstream. Increase in vegetation cover also contributes to the decrease in sediment yield. The reduction in sediment together with excessive sand mining in the lower Min River resulted in the severe downward erosion of the riverbed. Using a reformulated elasticity approach to quantifying climatic and anthropogenic contributions to sediment changes, the relative contribution of precipitation variability and human activities to sediment reduction in the lower Min River are quantified, which shows that the sediment reduction is fully caused by human activities (including land use/land cover changes and dam construction). View Full-Text
Keywords: anthropogenic impact; hydrologic change; dam construction; suspended sediment; streamflow; precipitation; vegetation; elasticity approach anthropogenic impact; hydrologic change; dam construction; suspended sediment; streamflow; precipitation; vegetation; elasticity approach
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MDPI and ACS Style

Wang, W.; Wang, T.; Cui, W.; Yao, Y.; Ma, F.; Chen, B.; Wu, J. Changes of Flow and Sediment Transport in the Lower Min River in Southeastern China under the Impacts of Climate Variability and Human Activities. Water 2021, 13, 673. https://doi.org/10.3390/w13050673

AMA Style

Wang W, Wang T, Cui W, Yao Y, Ma F, Chen B, Wu J. Changes of Flow and Sediment Transport in the Lower Min River in Southeastern China under the Impacts of Climate Variability and Human Activities. Water. 2021; 13(5):673. https://doi.org/10.3390/w13050673

Chicago/Turabian Style

Wang, Wen, Tianyue Wang, Wei Cui, Ying Yao, Fuming Ma, Benyue Chen, and Jing Wu. 2021. "Changes of Flow and Sediment Transport in the Lower Min River in Southeastern China under the Impacts of Climate Variability and Human Activities" Water 13, no. 5: 673. https://doi.org/10.3390/w13050673

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