干旱区生态环境知识资源中心(Arid): Earlier leaf senescence dates are constrained by soil moisture

Arid

DOI	10.1111/gcb.16569
	Earlier leaf senescence dates are constrained by soil moisture
	Wang, Xiaoyue; Wu, Chaoyang; Liu, Ying; Penuelas, Josep; Peng, Jie
通讯作者	Wu, CY
来源期刊	GLOBAL CHANGE BIOLOGY
ISSN	1354-1013
EISSN	1365-2486
出版年	2023
卷号	29 期号:6 页码:1557-1573
英文摘要	The unprecedented warming that has occurred in recent decades has led to later autumn leaf senescence dates (LSD) throughout the Northern Hemisphere. Yet, great uncertainties still exist regarding the strength of these delaying trends, especially in terms of how soil moisture affects them. Here we show that changes in soil moisture in 1982-2015 had a substantial impact on autumn LSD in one-fifth of the vegetated areas in the Northern Hemisphere (>30 degrees N), and how it contributed more to LSD variability than either temperature, precipitation or radiation. We developed a new model based on soil-moisture-constrained cooling degree days (CDDSM) to characterize the effects of soil moisture on LSD and compared its performance with the CDD, Delpierre and spring-influenced autumn models. We show that the CDDSM model with inputs of temperature and soil moisture outperformed the three other models for LSD modelling and had an overall higher correlation coefficient (R), a lower root mean square error and lower Akaike information criterion (AIC) between observations and model predictions. These improvements were particularly evident in arid and semi-arid regions. We studied future LSD using the CDDSM model under two scenarios (SSP126 and SSP585) and found that predicted LSD was 4.1 +/- 1.4 days and 5.8 +/- 2.8 days earlier under SSP126 and SSP585, respectively, than other models for the end of this century. Our study therefore reveals the importance of soil moisture in regulating autumn LSD and, in particular, highlights how coupling this effect with LSD models can improve simulations of the response of vegetation phenology to future climate change.
英文关键词	autumn phenology climate warming leaf senescence date soil moisture
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000905001400001
WOS关键词	CLIMATE-CHANGE ; AUTUMN PHENOLOGY ; GREEN-UP ; VEGETATION ; CARBON ; TEMPERATURE ; PRODUCTIVITY ; FEEDBACKS ; NDVI
WOS类目	Biodiversity Conservation ; Ecology ; Environmental Sciences
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/396771
推荐引用方式 GB/T 7714	Wang, Xiaoyue,Wu, Chaoyang,Liu, Ying,et al. Earlier leaf senescence dates are constrained by soil moisture[J],2023,29(6):1557-1573.
APA	Wang, Xiaoyue,Wu, Chaoyang,Liu, Ying,Penuelas, Josep,&Peng, Jie.(2023).Earlier leaf senescence dates are constrained by soil moisture.GLOBAL CHANGE BIOLOGY,29(6),1557-1573.
MLA	Wang, Xiaoyue,et al."Earlier leaf senescence dates are constrained by soil moisture".GLOBAL CHANGE BIOLOGY 29.6(2023):1557-1573.