DOI: 10.1111/gcb.12206
论文题名: Effects of seasonal snow on the growing season of temperate vegetation in China
作者: Yu Z. ; Liu S. ; Wang J. ; Sun P. ; Liu W. ; Hartley D.S.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2013
卷: 19, 期: 7 起始页码: 2182
结束页码: 2195
语种: 英语
英文关键词: Global warming
; Snow cover
; Snow depth
; Start of growing season
; Temperate vegetation
; Underground thermal condition
Scopus关键词: snow
; global perspective
; global warming
; growing season
; seasonal variation
; snow accumulation
; snow cover
; temperate environment
; vegetation cover
; article
; China
; climate change
; cold
; computer simulation
; ecosystem
; growth, development and aging
; phylogeography
; population dynamics
; season
; theoretical model
; tree
; China
; Climate Change
; Cold Temperature
; Computer Simulation
; Ecosystem
; Models, Theoretical
; Phylogeography
; Population Dynamics
; Seasons
; Snow
; Trees
; China
英文摘要: Variations in seasonal snowfall regulate regional and global climatic systems and vegetation growth by changing energy budgets of the lower atmosphere and land surface. We investigated the effects of snow on the start of growing season (SGS) of temperate vegetation in China. Across the entire temperate region in China, the winter snow depth increased at a rate of 0.15 cm yr-1 (P = 0.07) during the period 1982-1998, and decreased at a rate of 0.36 cm yr-1 (P = 0.09) during the period 1998-2005. Correspondingly, the SGS advanced at a rate of 0.68 day yr-1 (P < 0.01) during 1982-1998, and delayed at a rate of 2.13 day yr-1 (P = 0.07) during 1998-2005, against a warming trend throughout the entire study period of 1982-2005. Spring air temperature strongly regulated the SGS of both deciduous broad-leaf and coniferous forests, whereas the winter snow had a greater impact on the SGS of grassland and shrubs. Snow depth variation combined with air temperature contributed to the variability in the SGS of grassland and shrubs, as snow acted as an insulator and modulated the underground thermal conditions. In addition, differences were seen between the impacts of winter snow depth and spring snow depth on the SGS; as snow depths increased, the effect associated went from delaying SGS to advancing SGS. The observed thresholds for these effects were snow depths of 6.8 cm (winter) and 4.0 cm (spring). The results of this study suggest that the response of the vegetation's SGS to seasonal snow change may be attributed to the coupling effects of air temperature and snow depth associated with the underground thermal conditions. © 2013 Blackwell Publishing Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62404
Appears in Collections: 影响、适应和脆弱性
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作者单位: Division of Forestry and Natural Resources, West Virginia University, Morgantown, WV, 26506, United States; Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Beijing, 100091, China
Recommended Citation:
Yu Z.,Liu S.,Wang J.,et al. Effects of seasonal snow on the growing season of temperate vegetation in China[J]. Global Change Biology,2013-01-01,19(7)