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Drought timing influences the legacy of tree growth recovery
Huang, MT (Huang, Mengtian)1,2; Wang, XH (Wang, Xuhui)1; Keenan, TF (Keenan, Trevor F.)2,3; Piao, SL (Piao, Shilong)1,4,5

Whether and how the timing of extreme events affects the direction and magnitude of legacy effects on tree growth is poorly understood. In this study, we use a global database of Ring-Width Index (RWI) from 2,500 sites to examine the impact and legacy effects (the departure of observed RWI from expected RWI) of extreme drought events during 1948-2008, with a particular focus on the influence of drought timing. We assessed the recovery of stem radial growth in the years following severe drought events with separate groupings designed to characterize the timing of the drought. We found that legacies from extreme droughts during the dry season (DS droughts) lasted longer and had larger impacts in each of the 3years post drought than those from extreme droughts during the wet season (WS droughts). At the global scale, the average integrated legacy from DS droughts (0.18) was about nine times that from WS droughts (0.02). Site-level comparisons also suggest stronger negative impacts or weaker positive impacts of DS droughts on tree growth than WS droughts. Our results, therefore, highlight that the timing of drought is a crucial factor determining drought impacts on tree recovery. Further increases in baseline aridity could therefore exacerbate the impact of punctuated droughts on terrestrial ecosystems.

Subject Area生态学
WOS IDWOS:000437284700024
Indexed BySCIE
KeywordExtreme Climatic Events Mesophyll Conductance Bacterial-growth Water Deficits Forest Trees Vegetation Productivity Microbial Communities Mediterranean Forest Prolonged Drought Co2 Concentration
WOS Research AreaBiodiversity & Conservation ; Environmental Sciences & Ecology
WOS SubjectBiodiversity Conservation ; Ecology ; Environmental Sciences
Cooperation Status国际
Citation statistics
Cited Times:29[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorWang, XH (Wang, Xuhui)
Affiliation1.Peking Univ, Sinofrench Inst Earth Syst Sci, Coll Urban & Environm Sci, Beijing, Peoples R China;
2.Lawrence Berkeley Natl Lab, Berkeley, CA USA;
3.Univ Calif Berkeley, Berkeley, CA USA;
4.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Alpine Ecol & Biodivers, Beijing, Peoples R China;
5.Chinese Acad Sci, Ctr Excellence Tibetan Earth Sci, Beijing, Peoples R China.
Recommended Citation
GB/T 7714
Huang, MT ,Wang, XH ,Keenan, TF ,et al. Drought timing influences the legacy of tree growth recovery[J]. GLOBAL CHANGE BIOLOGY,2018,24(8):3546-3559.
APA Huang, MT ,Wang, XH ,Keenan, TF ,&Piao, SL .(2018).Drought timing influences the legacy of tree growth recovery.GLOBAL CHANGE BIOLOGY,24(8),3546-3559.
MLA Huang, MT ,et al."Drought timing influences the legacy of tree growth recovery".GLOBAL CHANGE BIOLOGY 24.8(2018):3546-3559.
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