DOI: 10.1002/2017JG004099
Scopus记录号: 2-s2.0-85042212355
论文题名: Relative Influence of Timing and Accumulation of Snow on Alpine Land Surface Phenology
作者: Xie J. ; Kneubühler M. ; Garonna I. ; de Jong R. ; Notarnicola C. ; De Gregorio L. ; Schaepman M.E.
刊名: Journal of Geophysical Research: Biogeosciences
ISSN: 21698953
出版年: 2018
卷: 123, 期: 2 起始页码: 561
结束页码: 576
语种: 英语
英文关键词: length of season
; mean snow water equivalent
; snow cover duration
; snow timing and accumulation
; start of season
; Swiss Alps
Scopus关键词: alpine environment
; environmental conditions
; grassland
; growing season
; land surface
; phenology
; seasonal variation
; snow accumulation
; snow cover
; snow water equivalent
; Alps
; Switzerland
英文摘要: Timing and accumulation of snow are among the most important phenomena influencing land surface phenology in mountainous ecosystems. However, our knowledge on their influence on alpine land surface phenology is still limited, and much remains unclear as to which snow metrics are most relevant for studying this interaction. In this study, we analyzed five snow and phenology metrics, namely, timing (snow cover duration (SCD) and last snow day), accumulation of snow (mean snow water equivalent, SWEm), and mountain land surface phenology (start of season and length of season) in the Swiss Alps during the period 2003–2014. We examined elevational and regional variations in the relationships between snow and alpine land surface phenology metrics using multiple linear regression and relative weight analyses and subsequently identified the snow metrics that showed strongest associations with variations in alpine land surface phenology of natural vegetation types. We found that the relationships between snow and phenology metrics were pronounced in high-elevational regions and alpine natural grassland and sparsely vegetated areas. Start of season was influenced primarily by SCD, secondarily by SWEm, while length of season was equally affected by SCD and SWEm across different elevational bands. We conclude that SCD plays the most significant role compared to other snow metrics. Future variations of snow cover and accumulation are likely to influence alpine ecosystems, for instance, their species composition due to changes in the potential growing season. Also, their spatial distribution may change as a response to the new environmental conditions if these prove persistent. ©2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114627
Appears in Collections: 气候减缓与适应
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作者单位: Remote Sensing Laboratories, Department of Geography, University of Zurich, Zurich, Switzerland; Institute for Applied Remote Sensing, EURAC, Bolzano, Italy
Recommended Citation:
Xie J.,Kneubühler M.,Garonna I.,et al. Relative Influence of Timing and Accumulation of Snow on Alpine Land Surface Phenology[J]. Journal of Geophysical Research: Biogeosciences,2018-01-01,123(2)