气候变化领域集成服务门户(CCPortal): Compound climate events increase tree drought mortality across European forests

CCPortal

DOI	10.1016/j.scitotenv.2021.151604
	Compound climate events increase tree drought mortality across European forests
	Gazol, Antonio; Julio Camarero, J.
发表日期	2022
ISSN	0048-9697
EISSN	1879-1026
卷号	816
英文摘要	Climate change can lead to the simultaneous occurrence of extreme droughts and heatwaves increasing the frequency of compound events with unknown impacts on forests. Here we use two independent datasets, a compiled database of tree drought mortality events and the ICP-Forest level I plots, to study the impacts of the simultaneous occurrence of hot summers, with elevated vapour pressure deficit (VPD), and dry years on forest defoliation and mortality across Europe. We focused on tree drought mortality and background mortality rates, and we studied their co-occurrence with compound events of hot summers and dry years. In total, 143 out of 310 mortality events across Europe, i.e. 46% of cases, corresponded with rare compound events characterized by hot summers and dry years. Over the past decades, summer temperature increased in most sites and severe droughts resulted in compound events not observed before the 1980s. From the ICP-Forest plots we identified 291 (1718 trees) and 61 plots (128 trees) where severe defoliation and mortality, respectively, were caused by drought. The analyses of these events showed that 34% and 27% of the defoliation and mortality cases corresponded with rare compound climate events, respectively. Background mortality rates across Europe in the period 1993-2013 presented higher values in regions where summer temperature and VPD more steeply rose, where drought frequency increased. The steady increase in summer temperatures and VPD in Southern and Eastern Europe may favor the occurrence of compound events of hot summers and dry conditions. Giving that both, local and intense tree drought mortality events and background forest mortality rates, are linked to such compound events we can expect an increase in forest drought mortality in these European regions over the next decades. (c) 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http:// creativecommons.org/licenses/by/4.0/).
英文关键词	Defoliation; Drought stress; Forest dieback; Summer temperature; Tree vigor
语种	英语
WOS研究方向	Environmental Sciences
WOS类目	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000802781300011
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/280741
作者单位	Consejo Superior de Investigaciones Cientificas (CSIC); CSIC - Instituto Pirenaico de Ecologia (IPE)
推荐引用方式 GB/T 7714	Gazol, Antonio,Julio Camarero, J.. Compound climate events increase tree drought mortality across European forests[J],2022,816.
APA	Gazol, Antonio,&Julio Camarero, J..(2022).Compound climate events increase tree drought mortality across European forests.SCIENCE OF THE TOTAL ENVIRONMENT,816.
MLA	Gazol, Antonio,et al."Compound climate events increase tree drought mortality across European forests".SCIENCE OF THE TOTAL ENVIRONMENT 816(2022).