干旱区生态环境知识资源中心(Arid): New northern snowpack classification linked to vegetation cover on a latitudinal mega-transect across northeastern Canada

Arid

DOI	10.1080/11956860.2021.1898775
	New northern snowpack classification linked to vegetation cover on a latitudinal mega-transect across northeastern Canada
	Royer, Alain; Domine, Florent; Roy, Alexandre; Langlois, Alexandre; Marchand, Nicolas; Davesne, Gautier
通讯作者	Royer, A (corresponding author), Univ Sherbrooke, Ctr Applicat & Rech Teledetect CARTEL, Sherbrooke, PQ, Canada. ; Royer, A (corresponding author), Ctr Etud Nord, Quebec City, PQ, Canada.
来源期刊	ECOSCIENCE
ISSN	1195-6860
EISSN	2376-7626
出版年	2021-04
英文摘要	Changes in mass, extent, duration, and physical properties of snow are key elements for studying associated climate change feedbacks in northern regions. In this study, we analyzed snowpack physical properties along a 'mega' transect from 47 degrees N to 83 degrees N (4,000 km) in northeastern Canada, which includes marked transitions between ecozones from boreal forest to subarctic and arctic ecosystems. Our unique dataset of 391 detailed snowpits acquired over the last 20 years, complemented with snow data from weather stations, shows that snowpack properties such as snow water equivalent, snow depth, density, grain size and basal depth hoar fraction (DHF) are strongly linked to vegetation type. Based on these results, we propose an updated classification of snow types in three classes: boreal forest snow (47-58 degrees N), tundra snow (58-74 degrees N) and polar desert snow (74-83 degrees N), which is more appropriate to the study area than the general north hemisphere classification commonly used. We also show that shrub presence along the transect contributes to a significant increase in DHF development which contributes most strongly to the thermal insulation properties of the snowpack. Overall, our analysis suggests that snow-vegetation interactions have a positive feedback effect on warming at northern latitudes.
英文关键词	Latitudinal gradient snowpack properties snow– vegetation interaction snow cover classification
类型	Article ; Early Access
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000644267100001
WOS类目	Ecology
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/352132
作者单位	[Royer, Alain; Langlois, Alexandre; Marchand, Nicolas] Univ Sherbrooke, Ctr Applicat & Rech Teledetect CARTEL, Sherbrooke, PQ, Canada; [Royer, Alain; Domine, Florent; Roy, Alexandre; Langlois, Alexandre; Davesne, Gautier] Ctr Etud Nord, Quebec City, PQ, Canada; [Domine, Florent] Univ Laval Canada, Takuvik Joint Int Lab, Quebec City, PQ, Canada; [Domine, Florent] CNRS INSU France, Quebec City, PQ, Canada; [Domine, Florent] Univ Laval, Dept Chem, Quebec City, PQ, Canada; [Roy, Alexandre] Univ Quebec Trois Rivieres, Dept Sci & Environm, Trois Rivieres, PQ, Canada; [Davesne, Gautier] Univ Montreal, Dept Geog, Montreal, PQ, Canada
推荐引用方式 GB/T 7714	Royer, Alain,Domine, Florent,Roy, Alexandre,et al. New northern snowpack classification linked to vegetation cover on a latitudinal mega-transect across northeastern Canada[J],2021.
APA	Royer, Alain,Domine, Florent,Roy, Alexandre,Langlois, Alexandre,Marchand, Nicolas,&Davesne, Gautier.(2021).New northern snowpack classification linked to vegetation cover on a latitudinal mega-transect across northeastern Canada.ECOSCIENCE.
MLA	Royer, Alain,et al."New northern snowpack classification linked to vegetation cover on a latitudinal mega-transect across northeastern Canada".ECOSCIENCE (2021).