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Increased discharge...
Increased discharge across the Yellow River Basin in the 21st century was dominated by precipitation in the headwater region
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Fan, X. F. (författare)
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Wang, L. (författare)
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Li, X. P. (författare)
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Zhou, J. (författare)
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- Chen, Deliang, 1961 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för geovetenskaper,Department of Earth Sciences
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Yang, H. B. (författare)
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(creator_code:org_t)
- Elsevier BV, 2022
- 2022
- Engelska.
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Ingår i: Journal of Hydrology-Regional Studies. - : Elsevier BV. - 2214-5818. ; 44
- Relaterad länk:
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https://gup.ub.gu.se...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Study region: The Yellow River Basin in China. Study focus: The discharge in the lowlands of a watershed is susceptible to the variations in its high-altitude headwaters in terms of climate, land cover/use and anthropogenic interference. This study not only focuses on the key role of the high-altitude headwaters of the Yellow River Basin (YRB) on the water supply in its droughty downstream lowlands, but also analyzes the contri-butions of the headwaters' changes to affect the variations of discharge in the entire basin especially in the early 21st century compared to the last half of the 20th century. New hydrological insights for the region: The results indicated that more than 1/3 of the actual flow out of the headwaters of the YRB supported the excessive water demand (mainly for irrigation) downstream. The observed discharge (QObs) increased by 44.07% in the YRB as a whole before and after the mutation year 2002 during 1986-2019, and 76.45% of the discharge increment derived from the headwaters. The increasing precipitation in the headwaters dominated the discharge recovery of the YRB, and resulted in a relative increase of 36.28% in the QObs of the entire YRB; whereas the variations of the headwaters in terms of potential evapotranspiration, land cover and water use for human activities have decreased the QObs of the entire YRB by 4.68%, 2.07% and 5.10%, respectively.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences (hsv//eng)
Nyckelord
- Discharge variations
- Headwater region of the Yellow River
- Water
- supply
- Climate
- Land cover
- Water -use
- climate-change
- water-balance
- runoff
- streamflow
- impacts
- responses
- glaciers
- plateau
- Water Resources
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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