干旱区生态环境知识资源中心(Arid): Photoperiod drives cessation of wood formation in northern conifers

Arid

DOI	10.1111/geb.13647
	Photoperiod drives cessation of wood formation in northern conifers
	Mu, Wenhuan; Wu, Xiuchen; Camarero, J. Julio; Fu, Yongshuo H.; Huang, Jianguo; Li, Xiaoyan; Chen, Deliang
通讯作者	Wu, XC
来源期刊	GLOBAL ECOLOGY AND BIOGEOGRAPHY
ISSN	1466-822X
EISSN	1466-8238
出版年	2023
卷号	32 期号:4 页码:603-617
英文摘要	AimsShifts in xylem phenology directly determine the forest capacity for carbon sequestration. However, a systematic understanding of the spatial patterns and the underpinning drivers in determining the cessation of wood formation (C-cw) is lacking at a pan-continental scale. Here, we addressed this knowledge gap by compiling a new dataset of multiple xylem phenology timings for northern conifers. LocationsSixty-two study sites, Northern Hemisphere (25-55 degrees N). Time period2003-2018 (16 years). TaxaThirty-three conifer species. MethodsA generalized additive model was fitted to characterize the latitudinal pattern in C-cw. Structural equation modelling and a linear mixed-effects model were applied to determine the main drivers underlying the latitudinal pattern in C-cw. ResultsThe C-cw followed a flat S-shaped pattern with increasing latitude. Photoperiod was the dominant determinant of the latitudinal pattern of C-cw, and a longer photoperiod was associated with an earlier C-cw. Both mean growing-season temperature and total growing-season precipitation exhibited significantly positive relationships to the cessation of cell elongation and thus the C-cw across all study sites. In arid regions, the pre-growing-season temperature had a significantly negative effect on C-cw. In humid regions, C-cw was negatively affected by the mean growing-season temperature. The onset of wood formation showed significantly positive coupling with C-cw at arid sites but not at humid sites. Early successional species were sensitive to hydrothermal variations during the pre-growing season. Main conclusionsWe reveal the dominant role of photoperiod in determining the cessation of wood formation for northern conifers and highlight differentiated interactive effects between photoperiod and seasonal climatic factors and the preceding xylem phenophases in determining C-cw among ecoregions and tree species. These insights provide evidence to reduce uncertainty in prediction of the forest carbon uptake potential and the consequent biophysical feedbacks of northern forests.
英文关键词	conifer species latitudinal pattern Northern Hemisphere photoperiod xylem phenology wood formation
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000935105900001
WOS关键词	XYLEM PHENOLOGY ; GROWING-SEASON ; CLIMATE-CHANGE ; CAMBIUM PHENOLOGY ; BLACK SPRUCE ; INTRAANNUAL DYNAMICS ; FOREST PRODUCTIVITY ; AUTUMN SENESCENCE ; TEMPERATE FOREST ; MODEL SELECTION
WOS类目	Ecology ; Geography, Physical
WOS研究方向	Environmental Sciences & Ecology ; Physical Geography
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/396779
推荐引用方式 GB/T 7714	Mu, Wenhuan,Wu, Xiuchen,Camarero, J. Julio,et al. Photoperiod drives cessation of wood formation in northern conifers[J],2023,32(4):603-617.
APA	Mu, Wenhuan.,Wu, Xiuchen.,Camarero, J. Julio.,Fu, Yongshuo H..,Huang, Jianguo.,...&Chen, Deliang.(2023).Photoperiod drives cessation of wood formation in northern conifers.GLOBAL ECOLOGY AND BIOGEOGRAPHY,32(4),603-617.
MLA	Mu, Wenhuan,et al."Photoperiod drives cessation of wood formation in northern conifers".GLOBAL ECOLOGY AND BIOGEOGRAPHY 32.4(2023):603-617.