Next Article in Journal
Dominant Influencing Factors of Groundwater Recharge Spatial Patterns in Ergene River Catchment, Turkey
Next Article in Special Issue
Extreme Precipitation Spatial Analog: In Search of an Alternative Approach for Future Extreme Precipitation in Urban Hydrological Studies
Previous Article in Journal
Expanding Rubber Plantations in Southern China: Evidence for Hydrological Impacts
Previous Article in Special Issue
The Future of Drought in the Southeastern U.S.: Projections from Downscaled CMIP5 Models
Article Menu
Issue 4 (April) cover image

Export Article

Open AccessArticle

Climate Change Impacts on Drought-Flood Abrupt Alternation and Water Quality in the Hetao Area, China

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
College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
4
School of Water Conservancy and Hydroelectric Power, Hebei University of Engineering, Handan 056021, China
*
Author to whom correspondence should be addressed.
Water 2019, 11(4), 652; https://doi.org/10.3390/w11040652
Received: 26 February 2019 / Revised: 20 March 2019 / Accepted: 21 March 2019 / Published: 29 March 2019
(This article belongs to the Special Issue Extreme Floods and Droughts under Future Climate Scenarios)
  |  
PDF [19097 KB, uploaded 29 March 2019]
  |  

Abstract

Drought-flood abrupt alternation (DFAA) is an extreme hydrological phenomenon caused by meteorological anomalies. To combat the climate change, the watershed integrated management model—Soil and Water Assessment Tool model (SWAT)—was used to simulate DFAA, total nitrogen (TN) and total phosphorus (TP) from 1961 to 2050, based on measured precipitation data in the Hetao area and the downscaled Representative Concentration Pathways (RCPs) climate scenarios. In the future, the increase in temperature and the increase in extreme precipitation will aggravate the pollution of water bodies. Results indicate that the risk of water quality exceeding the standard will increase when DFAA happens, and the risk of water quality exceeding the standard was the greatest in the case of drought-to-flood events. Results also indicate that, against the backdrop of increasing temperature and increasing precipitation in the future, the frequency of long-cycle and short-cycle drought-flood abrupt alternation index (LDFAI, SDFAI) in the Hetao area will continue to decrease, and the number of DFAA situations will decrease. However, the zone of high-frequency DFAA situations will move westward from the eastern Ulansuhai Nur Lake, continuing to pose a risk of water quality deterioration in that region. These results could provide a basis for flood control, drought resistance and pollution control in the Hetao and other areas. View Full-Text
Keywords: drought-flood abrupt alternation; temporal and spatial evolution; climate change; water quality; Copula function drought-flood abrupt alternation; temporal and spatial evolution; climate change; water quality; Copula function
Figures

Graphical abstract

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Yang, Y.; Weng, B.; Bi, W.; Xu, T.; Yan, D.; Ma, J. Climate Change Impacts on Drought-Flood Abrupt Alternation and Water Quality in the Hetao Area, China. Water 2019, 11, 652.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Water EISSN 2073-4441 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top