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DOI	10.1016/j.ejrh.2023.101469
	Attribution analysis of runoff change based on Budyko-type model with time-varying parameters for the Lhasa River Basin, Qinghai-Tibet Plateau
	Sun, Xiaoyu; Dong, Qianjin; Zhang, Xu
发表日期	2023
EISSN	2214-5818
卷号	48
英文摘要	Study region: The Lhasa River Basin (LRB), Qinghai-Tibet Plateau (QTP), China Study focus: This study investigates the application of three Budyko-type models with timevarying parameter and further explore the attribution of runoff change in the QTP. Three Budyko models with time-varying parameters estimated by linear, quadratic, sine and linear stepwise regression equations have been applied and compared their adaptability. According to the comparison results, the sensitivity decomposition analysis has been utilized based on the bestfitted Budyko model to separate the impacts of climate change and human activities on runoff during the 1988-2015 period. This study is aiming at exploring the pattern of the regional hydrological cycle and improving our understanding of the driver mechanism of runoff change in the alpine mountain area. New hydrological insights for the region: The time-varying Budyko-type models significantly improve the performance of runoff simulation compared to constant Budyko-type models, while the Choudhury-Yang model performs best, and the sine equations of simulated parameter & omega; best reflects the time variation pattern of parameters, which declares that & omega; have certain periodic characteristics. The result of runoff attribution shows that precipitation is the main factor increasing runoff before 2003 and human activity variables mainly lead to the decreasing trend of runoff after 2003, while PDO and PNA affect the runoff-generated process through the relationships with the environmental variables in the LRB.
关键词	Budyko-type model Climate change Human activities Lhasa River basin
英文关键词	CLIMATE-CHANGE; WATER-BALANCE; VEGETATION; IMPACTS; CATCHMENT; EVAPOTRANSPIRATION; IDENTIFICATION; STREAMFLOW; SEASONALITY; VARIABILITY
WOS研究方向	Water Resources
WOS记录号	WOS:001054755900001
来源期刊	JOURNAL OF HYDROLOGY-REGIONAL STUDIES
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283289
作者单位	Wuhan University; University of Hong Kong
推荐引用方式 GB/T 7714	Sun, Xiaoyu,Dong, Qianjin,Zhang, Xu. Attribution analysis of runoff change based on Budyko-type model with time-varying parameters for the Lhasa River Basin, Qinghai-Tibet Plateau[J],2023,48.
APA	Sun, Xiaoyu,Dong, Qianjin,&Zhang, Xu.(2023).Attribution analysis of runoff change based on Budyko-type model with time-varying parameters for the Lhasa River Basin, Qinghai-Tibet Plateau.JOURNAL OF HYDROLOGY-REGIONAL STUDIES,48.
MLA	Sun, Xiaoyu,et al."Attribution analysis of runoff change based on Budyko-type model with time-varying parameters for the Lhasa River Basin, Qinghai-Tibet Plateau".JOURNAL OF HYDROLOGY-REGIONAL STUDIES 48(2023).