DOI: 10.1175/JCLI-D-16-0196.1
Scopus记录号: 2-s2.0-85020061492
论文题名: Unexpected evergreen expansion in the Siberian forest under warming hiatus
作者: He Y. ; Huang J. ; Shugart H.H. ; Guan X. ; Wang B. ; Yu K.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2017
卷: 30, 期: 13 起始页码: 5021
结束页码: 5039
语种: 英语
Scopus关键词: Coniferophyta
英文摘要: Siberia has experienced a pronounced warming over the past several decades, which has induced an increase in the extent of evergreen conifer forest. However, the potential slowing of the trend of increasing surface air temperature (SAT) has produced intense debate since the late 1990s. During this warming hiatus, the Siberian region experienced a significant cooling during the winter season around 10 times that of the Northern Hemisphere (NH) as a whole. This potentially stresses evergreen conifer forests because cooler winters can cause cold-temperature damage and, hence, increase the mortality of young evergreen conifer forests. In this study, the response of Siberian forest composition during the warming hiatus was investigated using satellite observations coupled with model simulations. Observations indicated that from 2001 to 2012, the apparent area of evergreen conifer forest has increased by 10%, while that of the deciduous conifer forest has decreased by 40%. The transition from deciduous to evergreen conifer forest usually occurs through mixed forest or woody savannas as a buffer. To verify the response of evergreen conifer forest, model experiments were performed using an individual-based forest model. Hysteresis of forest change seen in the model simulations indicates that changes in forest composition dynamics under temperature oscillations induced by internal climate variability may not reverse this composition change. As a result, the evergreen conifer forest expansion under climate warming is expected to be a continuing process despite the occurrence of a warming hiatus, exerting far-reaching implications for climate-change-induced albedo shifts in the Siberian forest. © 2017 American Meteorological Society. 资助项目: NSFC, National Natural Science Foundation of China
; NSFC, National Natural Science Foundation of China
; NSFC, National Natural Science Foundation of China
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/48839
Appears in Collections: 气候变化与战略
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作者单位: Key Laboratory for Semi-Arid Climate Change of the Ministry of Education, College of Atmospheric Sciences, Lanzhou University, Lanzhou, China; Department of Environmental Sciences, University of Virginia, Charlottesville, VA, United States
Recommended Citation:
He Y.,Huang J.,Shugart H.H.,et al. Unexpected evergreen expansion in the Siberian forest under warming hiatus[J]. Journal of Climate,2017-01-01,30(13)