Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.13517 |
A longer vernal window: the role of winter coldness and snowpack in driving spring transitions and lags | |
Contosta, Alexandra R.1; Adolph, Alden2; Burchsted, Denise3; Burakowski, Elizabeth1,4; Green, Mark5,6; Guerra, David7; Albert, Mary2; Dibb, Jack1; Martin, Mary1; Mcdowell, William H.8; Routhier, Michael1; Wake, Cameron1; Whitaker, Rachel9; Wollheim, Wilfred8,10 | |
2017-04-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY
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ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2017 |
卷号 | 23期号:4 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Climate change is altering the timing and duration of the vernal window, a period that marks the end of winter and the start of the growing season when rapid transitions in ecosystem energy, water, nutrient, and carbon dynamics take place. Research on this period typically captures only a portion of the ecosystem in transition and focuses largely on the dates by which the system wakes up. Previous work has not addressed lags between transitions that represent delays in energy, water, nutrient, and carbon flows. The objectives of this study were to establish the sequence of physical and biogeochemical transitions and lags during the vernal window period and to understand how climate change may alter them. We synthesized observations from a statewide sensor network in New Hampshire, USA, that concurrently monitored climate, snow, soils, and streams over a three-year period and supplemented these observations with climate reanalysis data, snow data assimilation model output, and satellite spectral data. We found that some of the transitions that occurred within the vernal window were sequential, with air temperatures warming prior to snow melt, which preceded forest canopy closure. Other transitions were simultaneous with one another and had zero-length lags, such as snowpack disappearance, rapid soil warming, and peak stream discharge. We modeled lags as a function of both winter coldness and snow depth, both of which are expected to decline with climate change. Warmer winters with less snow resulted in longer lags and a more protracted vernal window. This lengthening of individual lags and of the entire vernal window carries important consequences for the thermodynamics and biogeochemistry of ecosystems, both during the winter-to-spring transition and throughout the rest of the year. |
英文关键词 | climate change energy balance lag snow soil spring stream temperature transition |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000396836800021 |
WOS关键词 | NORTHERN HARDWOOD FOREST ; SUB-ALPINE FORESTS ; NET CARBON UPTAKE ; CLIMATE-CHANGE ; WATER AVAILABILITY ; DECIDUOUS FORESTS ; NEW-ENGLAND ; PHENOLOGY ; SNOWMELT ; US |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/16626 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Univ New Hampshire, Inst Study Earth Oceans & Space, Earth Syst Res Ctr, Durham, NH 03824 USA; 2.Dartmouth Coll, Thayer Sch Engn, Hanover, NH 03755 USA; 3.Keene State Coll, Dept Environm Studies, Keene, NH USA; 4.Natl Ctr Atmospher Res, POB 3000, Boulder, CO 80307 USA; 5.Plymouth State Univ, Ctr Environm, Plymouth, NH USA; 6.US Forest Serv, Northern Res Stn, Plymouth, NH USA; 7.St Anselm Coll, Dept Phys, Manchester, NH USA; 8.Univ New Hampshire, Dept Nat Resources & Environm, Durham, NH 03824 USA; 9.White Mt Community Coll, Environm Sci, Berlin, NH USA; 10.Univ New Hampshire, Inst Study Earth Oceans & Space, Water Syst Anal Grp, Durham, NH 03824 USA |
推荐引用方式 GB/T 7714 | Contosta, Alexandra R.,Adolph, Alden,Burchsted, Denise,et al. A longer vernal window: the role of winter coldness and snowpack in driving spring transitions and lags[J]. GLOBAL CHANGE BIOLOGY,2017,23(4). |
APA | Contosta, Alexandra R..,Adolph, Alden.,Burchsted, Denise.,Burakowski, Elizabeth.,Green, Mark.,...&Wollheim, Wilfred.(2017).A longer vernal window: the role of winter coldness and snowpack in driving spring transitions and lags.GLOBAL CHANGE BIOLOGY,23(4). |
MLA | Contosta, Alexandra R.,et al."A longer vernal window: the role of winter coldness and snowpack in driving spring transitions and lags".GLOBAL CHANGE BIOLOGY 23.4(2017). |
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