气候变化领域集成服务门户(CCPortal): Hydrological effects of the snow fraction and its ecohydrological explication within the Budyko framework

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DOI	10.1016/j.jhydrol.2022.127813
	Hydrological effects of the snow fraction and its ecohydrological explication within the Budyko framework
	Liu, Qiang; Yang, Yuting; Liang, Liqiao; Yan, Denghua; Wang, Xuan; Li, Chunhui; Sun, Tao
通讯作者	Liu, Q (通讯作者)
发表日期	2022
ISSN	0022-1694
EISSN	1879-2707
卷号	610
英文摘要	Understanding the effects of climate and catchment characteristics on hydrological behavior is critical in hydrological sciences. Furthermore, improving the clarity associated with the physical meaning of the Budyko hypothesis on how it can be incorporated into ecohydrological processes remains a significant challenge, while the conciseness it affords in addressing hydrological responses has promoted its application. This study explores the hydrological effects of the snow fraction (fs) and assesses the ecohydrological meaning of the catchment parameter (n) within the Budyko framework, employing 1576 globally investigated catchments. Results showed that the Budyko hypothesis decreased systematic errors (NS = 0.76, RMSE = 181.01 mm a-1) when incorporating the fs compared with no snow fraction incorporated it (NS = 0.54, RMSE = 248.85 mm a-1), especially for catchments with higher fs. In these catchments, a higher fs was generally consistent with a higher normalized mean streamflow (Q), while the opposite was true for normalized evaporation (E/P). Under the Budyko framework, n and fs distribution generally exhibited opposite trends. Moreover, higher n was mainly distributed near water limited and the highest energy limited boundaries, while higher fs represented lower (P-Q)/P (i.e., the mean (P-Q)/P was 0.59, 0.57, and 0.38 for catchments with lower (fs < 0.15), medium (0.15 <= fs < 0.50), and higher (fs >= 0.50) fs). Statistical relationships among ecohydrological processes and catchment parameter suggested that: (i) higher storm depth (alpha) generally indicated higher normalized mean Q; (ii) a higher plant-available water holding capacity (kappa) resulted in a reduction in Q/P, especially when kappa was > 0.12; (iii) the effective rooting depth (Ze) exhibited a complex regulatory effect on P partitioning; and (iv) alpha, Ze, and kappa controlled n by 65%, 22%, and 13%, respectively, in all catchments. The ecohydrological processes incorporated into catchment parameters will broaden the ability of the Budyko hypothesis to describe hydrological behavior in a changing world, especially in the ungauged catchment.
关键词	PRECIPITATION DROUGHT EVAPORATION STREAMFLOW PATTERNS
英文关键词	Budyko hypothesis; Snow fraction; Streamflow; Ecohydrological processes
语种	英语
WOS研究方向	Engineering ; Geology ; Water Resources
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS记录号	WOS:000795137600002
来源期刊	JOURNAL OF HYDROLOGY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260649
推荐引用方式 GB/T 7714	Liu, Qiang,Yang, Yuting,Liang, Liqiao,et al. Hydrological effects of the snow fraction and its ecohydrological explication within the Budyko framework[J]. 中国科学院青藏高原研究所,2022,610.
APA	Liu, Qiang.,Yang, Yuting.,Liang, Liqiao.,Yan, Denghua.,Wang, Xuan.,...&Sun, Tao.(2022).Hydrological effects of the snow fraction and its ecohydrological explication within the Budyko framework.JOURNAL OF HYDROLOGY,610.
MLA	Liu, Qiang,et al."Hydrological effects of the snow fraction and its ecohydrological explication within the Budyko framework".JOURNAL OF HYDROLOGY 610(2022).