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Open AccessArticle

Evolution of Drought–Flood Abrupt Alternation and Its Impacts on Surface Water Quality from 2020 to 2050 in the Luanhe River Basin

by 1,2, 1,*, 1,3, 1, 1, 1,4 and 1,5
1
State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, China
2
College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China
3
Changjiang River Scientific Research Institute, Wuhan 430010, China
4
College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
5
School of Water Conservancy and Hydroelectric Power, Hebei University of Engineering, Handan 056021, China
*
Author to whom correspondence should be addressed.
Int. J. Environ. Res. Public Health 2019, 16(5), 691; https://doi.org/10.3390/ijerph16050691
Received: 17 December 2018 / Revised: 15 February 2019 / Accepted: 22 February 2019 / Published: 26 February 2019
(This article belongs to the Special Issue Water Resources Systems Quality and Quantity Management)
It has become a hot issue to study extreme climate change and its impacts on water quality. In this context, this study explored the evolution characteristics of drought–flood abrupt alternation (DFAA) and its impacts on total nitrogen (TN) and total phosphorous (TP) pollution, from 2020 to 2050, in the Luanhe river basin (LRB), based on the predicted meteorological data of the representative concentration pathways (RCPs) climate scenarios and simulated surface water quality data of the Soil and Water Assessment Tool (SWAT) model. The results show that DFAA occurred more frequently in summer, with an increasing trend from northwest to southeast of the LRB, basically concentrated in the downstream plain area, and the irrigation area. Meanwhile, most of the DFAA events were in light level. The incidence of TN pollution was much larger than the incidence of TP pollution and simultaneous occurrence of TN and TP pollution. The TN pollution was more serious than TP pollution in the basin. When DFAA occurred, TN pollution almost occurred simultaneously. Also, when TP pollution occurred, the TN pollution occurred simultaneously. These results could provide some references for the effects and adaptation-strategies study of extreme climate change and its influence on surface water quality. View Full-Text
Keywords: drought–flood abrupt alternation; tempo-spatial evolution; surface water quality; model simulations; Luanhe River Basin drought–flood abrupt alternation; tempo-spatial evolution; surface water quality; model simulations; Luanhe River Basin
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Bi, W.; Weng, B.; Yuan, Z.; Yang, Y.; Xu, T.; Yan, D.; Ma, J. Evolution of Drought–Flood Abrupt Alternation and Its Impacts on Surface Water Quality from 2020 to 2050 in the Luanhe River Basin. Int. J. Environ. Res. Public Health 2019, 16, 691.

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