气候变化领域集成服务门户(CCPortal): Stable isotope evidence confirms lakes are more sensitive than rivers to extreme drought on the Qinghai-Tibet Plateau, China

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DOI	10.1016/j.jhydrol.2023.130466
	Stable isotope evidence confirms lakes are more sensitive than rivers to extreme drought on the Qinghai-Tibet Plateau, China
	Wang, Zhigang; Li, Xiaoyan; Deng, Yuanhong; Zhang, Yangyang; Liu, Xin
发表日期	2023
ISSN	0022-1694
EISSN	1879-2707
卷号	627
英文摘要	The extreme drought event that occurred in China at the beginning of summer 2022 has caused widespread societal concern. The hydrogen and oxygen stable isotope data collected in the summer of 2022 on the eastern Qinghai-Tibet Plateau (QTP) were used here to quantify the responses of the lakes and rivers to extreme drought. The results showed that the evaporation fractionation of lake water was the strongest (lc-excess:-21.62%o), the evaporation fractionation of thermokarst lake water was the second strongest (lc-excess:-15.33%o), and the evaporation fractionation of river water was weak (lc-excess:-0.30%o) during the extreme drought event. Compared to the previous years, the strongest isotopic enrichment of surface water during the extreme drought occurred in lake water (E(818O): 58.61%), followed by thermokarst lake water (E(818O): 48.18%), while that in river water was weak (E(818O): 9.41%). Solar radiation was the main environmental factor controlling isotopic variations among different surface water. The ratios of evaporation to inflow of surface water caused the greatest isotopic enrichment to be found in lakes. Therefore, the occurrence of extreme drought events resulted in the lake water isotopic signal being the strongest evaporation enrichment reaction. The extreme drought event that occurred in the summer of 2022 intensified the evaporation enrichment of different surface waters on the eastern QTP. The results provide new insights into the surface water feedback climate change over the QTP.
关键词	Extreme drought events Surface water Stable isotopes Evaporation enrichment Qinghai-Tibet Plateau
英文关键词	THERMOKARST LAKES; YANGTZE-RIVER; YELLOW-RIVER; WATER-VAPOR; BASIN; PERMAFROST; GROUNDWATER; EVAPORATION; RUNOFF; PRECIPITATION
WOS研究方向	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS记录号	WOS:001121713600001
来源期刊	JOURNAL OF HYDROLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/282856
作者单位	Beijing Normal University; Beijing Normal University; Qinghai Normal University; Qinghai Normal University
推荐引用方式 GB/T 7714	Wang, Zhigang,Li, Xiaoyan,Deng, Yuanhong,et al. Stable isotope evidence confirms lakes are more sensitive than rivers to extreme drought on the Qinghai-Tibet Plateau, China[J],2023,627.
APA	Wang, Zhigang,Li, Xiaoyan,Deng, Yuanhong,Zhang, Yangyang,&Liu, Xin.(2023).Stable isotope evidence confirms lakes are more sensitive than rivers to extreme drought on the Qinghai-Tibet Plateau, China.JOURNAL OF HYDROLOGY,627.
MLA	Wang, Zhigang,et al."Stable isotope evidence confirms lakes are more sensitive than rivers to extreme drought on the Qinghai-Tibet Plateau, China".JOURNAL OF HYDROLOGY 627(2023).