干旱区生态环境知识资源中心(Arid): Runoff change controlled by combined effects of multiple environmental factors in a headwater catchment with cold and arid climate in northwest China

Arid

DOI	10.1016/j.scitotenv.2020.143995
	Runoff change controlled by combined effects of multiple environmental factors in a headwater catchment with cold and arid climate in northwest China
	Yang, Wuchao; Jin, Fengmei; Si, Yajun; Li, Zhi
通讯作者	Li, Z (corresponding author), Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Shaanxi, Peoples R China.
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2021
卷号	756
英文摘要	The limited runoff in cold and arid regions is sensitive to environmental changes, and it is thus urgent to explore the change and controlling factors of runoff under the background of global warming and intensified human activities. However, previous studies have rarely considered the combined effects of multiple controlling factors at varying scales over time. With the headwater region of the Manas River in northwest China as the study area, we investigated the change in runoff for the period of 1954-2016 and its relationship with regional environmental factors (e.g. precipitation PCP, temperature IMP, potential evapotranspiration ETo, snow cover extent SCE, land use, and normalized difference vegetation index NDVI) and/or global atmospheric circulation (e.g. North Atlantic Oscillation NAO, Arctic Oscillation AO, Pacific Interdecadal Oscillation PDO, and El Nino Southern Oscillation ENSO). In particular, the combined effects of multiple environmental factors were determined at different scales by the multiple wavelet coherence. The annual runoff significantly increased at a rate of 0.508 x 10(8) m(3)/decade, and the climate tended to be warmer and wetter. Among the regional and global environmental factors, NDVI and ENSO were the single factor mostly correlated with runoff, while NDVI-TMP and ENSO-PDO were the combined factors with the stronger relations on runoff, respectively. The regional environmental factors had larger impacts on runoff than the global environmental factors, and the natural factors outperformed human activities in controlling runoff. The accelerated melting of snow/glacier induced by the increasing temperature dominated runoff change, and the increasing water inputs from wetter climate may play a second role in runoff. The runoff characteristics in cold and arid regions seem to be different from those regions with little snow/glacier, which should be paid more attention. The employed multiple wavelet coherence is helpful in determining the processes dominating runoff change. (C) 2020 Elsevier B.V. All rights reserved.
英文关键词	Cold and arid region Runoff change Headwater catchment Regional environmental factors Global atmospheric circulation Wavelet coherence
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000603487500092
WOS关键词	SOUTHERN GREAT-PLAINS ; LAND-USE CHANGE ; RIVER-BASIN ; WAVELET COHERENCE ; CHANGE IMPACTS ; MANAS RIVER ; STREAMFLOW VARIABILITY ; WINTER PRECIPITATION ; CORDILLERA BLANCA ; SNOWMELT RUNOFF
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/348192
作者单位	[Yang, Wuchao; Jin, Fengmei; Si, Yajun; Li, Zhi] Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Yang, Wuchao,Jin, Fengmei,Si, Yajun,et al. Runoff change controlled by combined effects of multiple environmental factors in a headwater catchment with cold and arid climate in northwest China[J]. 西北农林科技大学,2021,756.
APA	Yang, Wuchao,Jin, Fengmei,Si, Yajun,&Li, Zhi.(2021).Runoff change controlled by combined effects of multiple environmental factors in a headwater catchment with cold and arid climate in northwest China.SCIENCE OF THE TOTAL ENVIRONMENT,756.
MLA	Yang, Wuchao,et al."Runoff change controlled by combined effects of multiple environmental factors in a headwater catchment with cold and arid climate in northwest China".SCIENCE OF THE TOTAL ENVIRONMENT 756(2021).