干旱区生态环境知识资源中心(Arid): Implications of stubble management on snow hydrology and meltwater partitioning

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DOI	10.1080/07011784.2019.1575774
	Implications of stubble management on snow hydrology and meltwater partitioning
	Harder, Phillip 1; Pomeroy, John W.1; Helgason, Warren D.1,2
通讯作者	Harder, Phillip
来源期刊	CANADIAN WATER RESOURCES JOURNAL
ISSN	0701-1784
EISSN	1918-1817
出版年	2019
卷号	44 期号:2 页码:193-204
英文摘要	Spring snowmelt is the most important hydrological event in agricultural cold regions, recharging soil moisture and generating the majority of annual runoff. Melting agricultural snowcovers are patchy, which leads to melt rate enhancement by energy advection from warm moist snow-free surfaces to cool dry snowcovers. Agricultural snowmelt is also impacted by crop residue. Adoption of zero-tillage agricultural practices means vast areas of the Canadian Prairies are now characterized by standing crop stubble. Stubble influences snow accumulation through blowing snow processes and snowmelt through the impact of emerging stubble upon the surface energy balance. Unfortunately, stubble emergence and advection to patchy snowcovers are unaccounted for in snow hydrology models and a complete process description has been unavailable. Here, both advection and stubble influences on snowmelt hydrology are modelled by coupling new stubble-snow-atmosphere surface energy balance and advection models to existing blowing snow and frozen soil infiltration models. Long-term meteorological datasets from sub-humid and semi-arid locations in Saskatchewan, Canada are used to quantify the influence of stubble characteristics on accumulation, melt, and meltwater partitioning processes with respect to interannual variability, antecedent soil moisture, and climatic differences on the Canadian Prairies. The hydrological response to increasing stubble height is increased meltwater, melt rate, infiltration, and runoff, and negligible changes in melt duration. The response of these processes to changes in stubble height was more pronounced at a semi-arid site versus a sub-humid site as stubble more effectively suppresses blowing snow sublimation in the windier, drier semi-arid environment of southwestern Saskatchewan. Recommendations for stubble management to meet specific runoff or infiltration objectives are summarised; stubble management can be an effective tool to influence infiltration where soils are dry and runoff where soils are wet. This framework allows the diagnosis of the influence of stubble management on meltwater partitioning in cold agricultural regions.
英文关键词	Snowmelt Blowing Snow Frozen Soil Infiltration Stubble Management Canadian Prairies
类型	Article
语种	英语
国家	Canada
收录类别	SCI-E
WOS记录号	WOS:000465120100005
WOS关键词	BOUNDARY-LAYER ; PRAIRIE ; INFILTRATION ; SENSITIVITY ; MODEL ; MASS ; MELT ; ACCUMULATION ; RADIATION ; CLIMATE
WOS类目	Water Resources
WOS研究方向	Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/214781
作者单位	1.Univ Saskatchewan, Ctr Hydrol, Saskatoon, SK, Canada; 2.Univ Saskatchewan, Dept Civil Geol & Environm Engn, Saskatoon, SK, Canada
推荐引用方式 GB/T 7714	Harder, Phillip,Pomeroy, John W.,Helgason, Warren D.. Implications of stubble management on snow hydrology and meltwater partitioning[J],2019,44(2):193-204.
APA	Harder, Phillip,Pomeroy, John W.,&Helgason, Warren D..(2019).Implications of stubble management on snow hydrology and meltwater partitioning.CANADIAN WATER RESOURCES JOURNAL,44(2),193-204.
MLA	Harder, Phillip,et al."Implications of stubble management on snow hydrology and meltwater partitioning".CANADIAN WATER RESOURCES JOURNAL 44.2(2019):193-204.