气候变化领域集成服务门户(CCPortal): Snowpack affects soil microclimate throughout the year

CCPortal

DOI	10.1007/s10584-020-02943-8
	Snowpack affects soil microclimate throughout the year
	Wilson G.; Green M.; Brown J.; Campbell J.; Groffman P.; Durán J.; Morse J.
发表日期	2020
ISSN	0165-0009
英文摘要	Variations in snow depth have complex effects on soil microclimate. Snow insulates soil and thus regulates, along with air temperature, the nature, and extent of soil freezing. There is great uncertainty about the main drivers of soil freezing, which have important effects on ecosystem carbon and nitrogen cycling processes and might change as climate warms and snowfall decreases as part of climate change. Here, we utilitze sites from a variety of elevations and aspects within the northern hardwood forest at the Hubbard Brook Experimental Forest (New Hampshire, USA) to investigate relationships between seasonal snowpack, soil freezing, and soil microclimate across this gradient using 8 years of bi-weekly snowpack and soil frost-depth measurements, and continuous soil climate monitoring. We utilize a time-integrated snowpack descriptor and find that snowpacks with lower seasonal snow water equivalents result in more soil temperature variation and deeper soil frost but have no effect on variation in soil moisture. Seasonal snow water equivalent of the snowpack influences the date of rapid soil warming in the spring, which in turn influences both summer soil moisture and an index of annual cumulative soil heat. These results show that snowpack dynamics, which are highly sensitive to changes in climate, have wide-ranging effects on soil microclimate year-round and thus could have important implications for ecosystem carbon and nitrogen cycling processes. © 2020, Springer Nature B.V.
英文关键词	Snowpack; Soil frost; Soil microclimate; Winter climate change
语种	英语
scopus关键词	Carbon; Climate change; Ecosystems; Forestry; Freezing; Nitrogen; Snow; Snow melting systems; Soil mechanics; Soil moisture; Temperature; Climate monitoring; Depth measurements; Ecosystem carbons; Hubbard Brook experimental forest; Northern hardwood forest; Seasonal snowpack; Snow water equivalent; Soil temperature variations; Soil surveys
来源期刊	Climatic Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/147261
作者单位	Cary Institute of Ecosystem Studies, Millbrook, NY 12545, United States; USDA Forest Service, Woodstock, NH 03262, United States; Case Western Reserve University, Cleveland, OH 44106, United States; USDA Forest Service, Princeton, WV 24740, United States; City University of New York Advanced Science Research Center at the Graduate Center, New York, NY 10031, United States; Centre for Functional Ecology, University of Coimbra, Coimbra, Portugal; Portland State University, Environmental Science and Management, Portland, OR 97207, United States
推荐引用方式 GB/T 7714	Wilson G.,Green M.,Brown J.,et al. Snowpack affects soil microclimate throughout the year[J],2020.
APA	Wilson G..,Green M..,Brown J..,Campbell J..,Groffman P..,...&Morse J..(2020).Snowpack affects soil microclimate throughout the year.Climatic Change.
MLA	Wilson G.,et al."Snowpack affects soil microclimate throughout the year".Climatic Change (2020).