气候变化领域集成服务门户(CCPortal): Widespread deoxygenation in warming rivers

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DOI	10.1038/s41558-023-01793-3
	Widespread deoxygenation in warming rivers
	Zhi, Wei; Klingler, Christoph; Liu, Jiangtao; Li, Li
发表日期	2023
ISSN	1758-678X
EISSN	1758-6798
英文摘要	Deoxygenation is commonly observed in oceans and lakes but less expected in shallower, flowing rivers. Here we reconstructed daily water temperature and dissolved oxygen in 580 rivers across the United States and 216 rivers in Central Europe by training a deep learning model using temporal weather and water quality data and static watershed attributes (for example, hydro-climate, topography, land use, soil). Results revealed persistent warming in 87% and deoxygenation in 70% of the rivers. Urban rivers demonstrated the most rapid warming, whereas agricultural rivers experienced the slowest warming but fastest deoxygenation. Mean deoxygenation rates (-0.038 & PLUSMN; 0.026 mg l-1 decade-1) were higher than those in oceans but lower than those in temperate lakes. These rates, however, may be underestimated, as training data are from grab samples collected during the day when photosynthesis peaks. Projected future rates are between 1.6 and 2.5 times higher than historical rates, indicating significant ramifications for water quality and aquatic ecosystems. Warming waters in a changing climate have led to declining oxygen levels in oceans and lakes; the impact on rivers has been less clear. This study shows that widespread deoxygenation in rivers in the United States and Central Europe may accelerate under climate change and influence water quality.
英文关键词	DISSOLVED-OXYGEN; WATER-QUALITY; STREAM TEMPERATURE; DECLINING OXYGEN; MODEL
WOS研究方向	Environmental Sciences ; Environmental Studies ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:001066039100001
来源期刊	Nature Climate Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/282298
作者单位	Pennsylvania Commonwealth System of Higher Education (PCSHE); Pennsylvania State University; Pennsylvania State University - University Park; Hohai University; University of Natural Resources & Life Sciences, Vienna
推荐引用方式 GB/T 7714	Zhi, Wei,Klingler, Christoph,Liu, Jiangtao,et al. Widespread deoxygenation in warming rivers[J],2023.
APA	Zhi, Wei,Klingler, Christoph,Liu, Jiangtao,&Li, Li.(2023).Widespread deoxygenation in warming rivers.Nature Climate Change.
MLA	Zhi, Wei,et al."Widespread deoxygenation in warming rivers".Nature Climate Change (2023).