气候变化领域集成服务门户(CCPortal): Impacts of climate change and human activities on runoff changes in the Ob River Basin of the Arctic region from 1980 to 2017

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DOI	10.1007/s00704-022-04021-8
	Impacts of climate change and human activities on runoff changes in the Ob River Basin of the Arctic region from 1980 to 2017
	Hu, Didi; Xu, Min; Kang, Shichang; Wu, Hao
通讯作者	Xu, M (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China. ; Xu, M (通讯作者)，Univ Chinese Acad Sci, Beijing 100049, Peoples R China.
发表日期	2020
ISSN	0177-798X
EISSN	1434-4483
英文摘要	Runoff in the Arctic region has changed greatly under climate change and human activities. However, the quantitative impacts remain unclear in this region. In this study, the changes in climate and discharge were examined in the Ob River Basin during 1980-2017. Increasing trends were found for the variables annual air temperature, precipitation, evapotranspiration, and runoff, with rates of 0.2 degrees C/10a, 12.7 mm/10a, 5.4 mm/10a, and 5.4 mm/10a, respectively. The trends were significant at a 95% confidence level for the annual air temperature and runoff and significant at a higher confidence level of 99% for precipitation and evapotranspiration. Based on the slope changing ratio of cumulative quantity (SCRCQ) method, the contributions of climate change and human activities to runoff changes were discussed. In comparison with the baseline period TO (1979-1992), the annual runoff increased in both of the comparable periods, with increments of 16.0% in T1 (1993-2002) and 8.5% in T2 (2003-2017). The contribution rates of precipitation, evapotranspiration changes, and human activities to runoff increases were 55.6%, -2.0%, and 46.4% from T0 to T1 and 88.2%, -41.2% and 53.0% from T0 to T2, respectively. The timing of the runoff peak advanced by approximately 12 days due to earlier snowmelt. The thawing of permafrost had little effect on annual runoff changes because of low permafrost coverage. Precipitation was the main climate factor causing an annual runoff increase. The comprehensive contribution of indirect anthropogenic influences to runoff changes might be considerable. This work has significance for water resource management in the Arctic.
关键词	LAND EVAPORATION WATER-RESOURCES DISCHARGE AMPLIFICATION VARIABILITY DYNAMICS YELLOW OCEAN
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000774639000001
来源期刊	THEORETICAL AND APPLIED CLIMATOLOGY
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254456
作者单位	[Hu, Didi; Xu, Min; Kang, Shichang] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China; [Hu, Didi; Xu, Min; Kang, Shichang] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Wu, Hao] Yangzhou Univ, Coll Hydraul Sci & Engn, Yangzhou 225127, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Hu, Didi,Xu, Min,Kang, Shichang,et al. Impacts of climate change and human activities on runoff changes in the Ob River Basin of the Arctic region from 1980 to 2017[J]. 中国科学院西北生态环境资源研究院,2020.
APA	Hu, Didi,Xu, Min,Kang, Shichang,&Wu, Hao.(2020).Impacts of climate change and human activities on runoff changes in the Ob River Basin of the Arctic region from 1980 to 2017.THEORETICAL AND APPLIED CLIMATOLOGY.
MLA	Hu, Didi,et al."Impacts of climate change and human activities on runoff changes in the Ob River Basin of the Arctic region from 1980 to 2017".THEORETICAL AND APPLIED CLIMATOLOGY (2020).