DOI: 10.1111/gcb.14539
Scopus记录号: 2-s2.0-85059552892
论文题名: Chilling and forcing temperatures interact to predict the onset of wood formation in Northern Hemisphere conifers
作者: Delpierre N. ; Lireux S. ; Hartig F. ; Camarero J.J. ; Cheaib A. ; Čufar K. ; Cuny H. ; Deslauriers A. ; Fonti P. ; Gričar J. ; Huang J.-G. ; Krause C. ; Liu G. ; de Luis M. ; Mäkinen H. ; del Castillo E.M. ; Morin H. ; Nöjd P. ; Oberhuber W. ; Prislan P. ; Rossi S. ; Saderi S.M. ; Treml V. ; Vavrick H. ; Rathgeber C.B.K.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2019
卷: 25, 期: 3 起始页码: 1089
结束页码: 1105
语种: 英语
英文关键词: cambium
; chilling temperatures
; conifers
; forcing temperatures
; phenological models
; wood phenology
Scopus关键词: Coniferophyta
; Larix decidua
; Picea abies
; Picea mariana
; Pinus sylvestris
英文摘要: The phenology of wood formation is a critical process to consider for predicting how trees from the temperate and boreal zones may react to climate change. Compared to leaf phenology, however, the determinism of wood phenology is still poorly known. Here, we compared for the first time three alternative ecophysiological model classes (threshold models, heat-sum models and chilling-influenced heat-sum models) and an empirical model in their ability to predict the starting date of xylem cell enlargement in spring, for four major Northern Hemisphere conifers (Larix decidua, Pinus sylvestris, Picea abies and Picea mariana). We fitted models with Bayesian inference to wood phenological data collected for 220 site-years over Europe and Canada. The chilling-influenced heat-sum model received most support for all the four studied species, predicting validation data with a 7.7-day error, which is within one day of the observed data resolution. We conclude that both chilling and forcing temperatures determine the onset of wood formation in Northern Hemisphere conifers. Importantly, the chilling-influenced heat-sum model showed virtually no spatial bias whichever the species, despite the large environmental gradients considered. This suggests that the spring onset of wood formation is far less affected by local adaptation than by environmentally driven plasticity. In a context of climate change, we therefore expect rising winter–spring temperature to exert ambivalent effects on the spring onset of wood formation, tending to hasten it through the accumulation of forcing temperature, but imposing a higher forcing temperature requirement through the lower accumulation of chilling. © 2018 John Wiley & Sons Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/117490
Appears in Collections: 气候变化与战略
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Recommended Citation:
Delpierre N.,Lireux S.,Hartig F.,et al. Chilling and forcing temperatures interact to predict the onset of wood formation in Northern Hemisphere conifers[J]. Global Change Biology,2019-01-01,25(3)