Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018WR023054 |
Bayesian Analyses of 17 Winters of Water Vapor Fluxes Show Bark Beetles Reduce Sublimation | |
Frank, John M.1,2,3; Massman, William J.1; Ewers, Brent E.2,3; Williams, David G.2,3 | |
2019-02-01 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2019 |
卷号 | 55期号:2页码:1598-1623 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Sublimation is an important hydrological flux in cold, snow-dominated ecosystems. In high-elevation spruce-fir forests of western North America, spruce beetle outbreaks have killed trees, reduced the canopy, and altered processes that control sublimation. We evaluated two hypotheses related to effects of disturbance on sublimation in this ecosystem: (1) the dominant source for sublimation is canopy intercepted snow and (2) the loss of canopy following a beetle disturbance leads to less total sublimation. To incorporate uncertainty hierarchically across multiple data sources and address phenomenological parsimony, Bayesian statistics were used to analyze 17years (2000-2016) of winter eddy covariance flux data at the Glacier Lakes Ecosystem Experiments Sites AmeriFlux sites where a spruce beetle outbreak caused 75-85% basal area mortality. Our analysis revealed that resistances to sublimate snow from the canopy were an order of magnitude less than from the snowpack, and the maximum snow loading capacity in disturbed canopies was reduced to 34% of its pre-outbreak value. Total sublimation has decreased since 2010, 2years after the main outbreak, declining 24% (with a 95% credible interval, C.I., between 18% and 38%) during 2014-2016 due to a 32% decrease in canopy sublimation. Snowpack sublimation only increased 3% over this period. With less total sublimation, the forest retained 6.1% (4.5-12.3% C.I.) more snowpack mass or equivalently 4.4% (3.2-8.8 C.I.) of the annual precipitation. Considering tree growth and ecological succession are slow in spruce-fir forests, this decrease in sublimation should persist as an increased snowpack for decades, with substantial impacts on catchment hydrologic processes and potentially streamflow. |
英文关键词 | sublimation spruce beetle energy balance canopy interception eddy covariance Bayesian statistics |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000461858900038 |
WOS关键词 | ENERGY-BALANCE CLOSURE ; VEGETATION LEAF-AREA ; EDDY-COVARIANCE ; SNOW ACCUMULATION ; TURBULENT FLUXES ; TREE MORTALITY ; BOUNDARY-LAYER ; FOREST CANOPY ; COLD REGIONS ; SURFACE |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
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/181309 |
专题 | 资源环境科学 |
作者单位 | 1.US Forest Serv, Rocky Mt Res Stn, Ft Collins, CO 80526 USA; 2.Univ Wyoming, Dept Bot, Laramie, WY 82071 USA; 3.Univ Wyoming, Program Ecol, Laramie, WY 82071 USA |
推荐引用方式 GB/T 7714 | Frank, John M.,Massman, William J.,Ewers, Brent E.,et al. Bayesian Analyses of 17 Winters of Water Vapor Fluxes Show Bark Beetles Reduce Sublimation[J]. WATER RESOURCES RESEARCH,2019,55(2):1598-1623. |
APA | Frank, John M.,Massman, William J.,Ewers, Brent E.,&Williams, David G..(2019).Bayesian Analyses of 17 Winters of Water Vapor Fluxes Show Bark Beetles Reduce Sublimation.WATER RESOURCES RESEARCH,55(2),1598-1623. |
MLA | Frank, John M.,et al."Bayesian Analyses of 17 Winters of Water Vapor Fluxes Show Bark Beetles Reduce Sublimation".WATER RESOURCES RESEARCH 55.2(2019):1598-1623. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论