Nighttime warming alleviates the incidence of juniper forest growth decline on the Tibetan Plateau

doi:10.1016/j.scitotenv.2021.146924

	Nighttime warming alleviates the incidence of juniper forest growth decline on the Tibetan Plateau
	Mu, Yu-Mei ; Fang, Ouya ; Lyu, Lixin 2
	2021
发表期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
卷号	782
摘要	Recent warming over the Tibetan Plateau (TP) is approximately twice the global-mean surface temperature increase and poses a threat to the healthy growth of forests. Although many studies have focused on whether recent climate warming has caused forest growth decline on the TP, it remains unclear how asymmetric warming, that is faster increasing nighttime temperature than daytime, impacts forest growth decline. We explored this question by using a ring-width index series from 1489 juniper trees (Juniperus prezwalskii and J. tibetica) at 50 sites on the TP. We calculated the percentage of trees with growth decline (PTD) to reconstruct historical forest growth decline and employed a piecewise structural equation meta-model (pSEM) and linear mixed model (LMM) to explore influencing factors. We found that the PTD has decreased since the late 19th century, with an abrupt decreasing trend since the 1980s. Results of the pSEM show that winter minimum temperature has a stronger indirect negative effect on the variation in PTD (beta = -0.24, p < 0.05) compared to that of the weak indirect positive effect of summer maximum temperature (beta = 0.16, p < 0.05). The results of LMM show that the variation in PTD is directly negatively (p < 0.001) affected by both winter minimum temperature and summer total precipitation, but the former has a greater independent contribution than the latter (with 17.7% vs 2.5% of variances independently explained, respectively). These results suggest that increased winter minimum temperature substantially mitigates the growth decline in juniper forests on the TP. As the minimum temperature generally occurs at night, we conclude that the asymmetric increase in nighttime temperature has decreased the incidence of juniper forest growth decline on the TP under climate warming. This alleviating effect of nighttime warming is likely due to reduced low-temperature constraints and reduced damage to tree growth. (C) 2021 Elsevier B.V. All rights reserved.
关键词	Asymmetric warming Climate change Dendroecology Forest growth High-elevation forests
学科领域	Environmental Sciences
DOI	10.1016/j.scitotenv.2021.146924
收录类别	SCI
语种	英语
WOS关键词	ANNUAL TEMPERATURE CYCLE ; TREE-RING WIDTH ; CLIMATE-CHANGE ; MINIMUM TEMPERATURE ; ABRUPT SHIFT ; XYLOGENESIS ; SIGNAL ; RECONSTRUCTION ; GREENNESS ; PHENOLOGY
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000655626900019
出版者	ELSEVIER
文献子类	Article
出版地	AMSTERDAM
EISSN	1879-1026
资助机构	National Natural Science Foundation of China [31870460, 41771060] ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) [2019QZKK0301]
作者邮箱	oyfang@ibcas.ac.cn
引用统计	被引频次：9[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/26636
专题	植被与环境变化国家重点实验室
作者单位	1.[Mu, Yu-Mei 2.Fang, Ouya 3.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China 4.Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Mu, Yu-Mei,Fang, Ouya,Lyu, Lixin. Nighttime warming alleviates the incidence of juniper forest growth decline on the Tibetan Plateau[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2021,782.
APA	Mu, Yu-Mei,Fang, Ouya,&Lyu, Lixin.(2021).Nighttime warming alleviates the incidence of juniper forest growth decline on the Tibetan Plateau.SCIENCE OF THE TOTAL ENVIRONMENT,782.
MLA	Mu, Yu-Mei,et al."Nighttime warming alleviates the incidence of juniper forest growth decline on the Tibetan Plateau".SCIENCE OF THE TOTAL ENVIRONMENT 782(2021).

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