DOI: 10.1038/ngeo1642
论文题名: Summertime climate response to mountain pine beetle disturbance in British Columbia
作者: Maness H. ; Kushner P.J. ; Fung I.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2013
卷: 6, 期: 1 起始页码: 65
结束页码: 70
语种: 英语
Scopus关键词: beetle
; cloud cover
; coniferous tree
; dieback
; disturbance
; ecosystem response
; energy balance
; evapotranspiration
; forest management
; mountain environment
; precipitation (climatology)
; remote sensing
; shortwave radiation
; surface energy
; surface temperature
; temperature effect
; wildfire
; British Columbia
; Canada
; Coleoptera
; Pinus mugo
英文摘要: The present mountain pine beetle infestation in forests in British Columbia ranks among the largest ecological disturbances recorded in Canada so far. These recent outbreaks are thought to have been favoured by large-scale climatic shifts, and may foreshadow outbreaks of a similar magnitude in North American forests over the coming decades. The associated forest dieback could result in substantial shifts in evapotranspiration and albedo, thereby altering the local surface energy balance, and in turn regional temperature and climate. Here we quantify the impact of the Canadian pine beetle disturbance on the local summertime surface energy budget, using measurements of evapotranspiration, albedo and surface temperature, obtained primarily through remote sensing. We show that over the 170,000 km 2 of affected forest, the typical decrease in summertime evapotranspiration is 19%. Changes to the absorbed short-wave flux are negligible, in comparison. As a result, outgoing sensible and radiative heat fluxes increased by 8% and 1%, respectively, corresponding to a typical increase in surface temperature of 1C. These changes are comparable to those observed for other types of disturbance, such as wildfire, and may have secondary consequences for climate, including modifications to circulation, cloud cover and precipitation. © 2013 Macmillan Publishers Limited. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/106900
Appears in Collections: 气候减缓与适应 科学计划与规划
There are no files associated with this item.
作者单位: Department of Physics, University of Toronto, Toronto, ON M5S 1A7, Canada; Department of Earth and Planetary Sciences, University of California at Berkeley, Berkeley, CA 94720, United States
Recommended Citation:
Maness H.,Kushner P.J.,Fung I.. Summertime climate response to mountain pine beetle disturbance in British Columbia[J]. Nature Geoscience,2013-01-01,6(1)