| Leaf habit and plant height are associated with mortality risk of trees and shrubs during extreme drought in a Chinese savanna ecosystem | |
Dai, Fangyu1; Hou, Yanru2; Li, Zhongfei1; Wen, Handong3,4; Li, Tianliang3,4; Chen, Yajun3,4 ; Zhang, Shubin3
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| 2025 | |
| Source Publication | JOURNAL OF FORESTRY RESEARCH
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| ISSN | 1007-662X |
| Volume | 36Issue:1Pages:- |
| Abstract | Climate change has significantly increased the frequency and severity of droughts and risk of tree death worldwide. Differences in leaf habit, plant size, and species diversity are associated with differences in the risk of drought-induced mortality, but the relative contributions of these factors to the risk of mortality are unclear. In a study of the mortality of tree and shrub species during the extreme drought of 2019 in a savanna ecosystem in Southwest China, we assessed the relative contributions of evergreen and deciduous leaf habit, plant size, and species richness and diversity to the mortality of shrubs and trees after the 2019 extreme drought. The deciduous species had significantly lower hydraulic safety margins than the coexisting evergreen species, resulting in a higher mortality risk. Additionally, species and individuals with taller canopies tended to have deeper root systems, an advantage during extreme drought that reduced mortality risk. Notably, mortality risk was largely independent of stand species richness and diversity. Overall, leaf habit and plant height were better predictors of mortality risk than species richness and diversity. These novel insights provide a better understanding of the mechanisms driving drought-induced mortality in the ecosystems with a low canopy and weak interspecific and intraspecific competition for shared resources. Leaf habit and tree size should be incorporated into hypotheses on the mechanisms underlying drought-induced tree mortality. |
| Keyword | Drought-induced mortality Hydraulic safety margin Root depth Savanna Species diversity |
| Subject Area | Forestry |
| DOI | 10.1007/s11676-025-01861-8 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:001485846000001 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | https://ir.xtbg.ac.cn/handle/353005/14654 |
| Collection | 2012年后新成立研究组 |
| Affiliation | 1.Chinese Acad Sci, Yunnan Key Lab Forest Ecosyst Stabil & Global Chan, Xishuangbanna Trop Bot Garden, Mengla 666303, Peoples R China 2.Southwest Forestry Univ, Sch Ecol & Environm, Kunming 650224, Peoples R China 3.Qingdao Agr Univ, Sch Landscape Architecture & Forestry, Qingdao 266109, Peoples R China 4.Chinese Acad Sci, T STAR Core Team, Xishuangbanna Trop Bot Garden, Mengla 666303, Peoples R China 5.Chinese Acad Sci, Yuanjiang Savanna Ecosyst Res Stn, Xishuangbanna Trop Bot Garden, Yuanjiang 653300, Peoples R China |
| Recommended Citation GB/T 7714 | Dai, Fangyu,Hou, Yanru,Li, Zhongfei,et al. Leaf habit and plant height are associated with mortality risk of trees and shrubs during extreme drought in a Chinese savanna ecosystem[J]. JOURNAL OF FORESTRY RESEARCH,2025,36(1):-. |
| APA | Dai, Fangyu.,Hou, Yanru.,Li, Zhongfei.,Wen, Handong.,Li, Tianliang.,...&Zhang, Shubin.(2025).Leaf habit and plant height are associated with mortality risk of trees and shrubs during extreme drought in a Chinese savanna ecosystem.JOURNAL OF FORESTRY RESEARCH,36(1),-. |
| MLA | Dai, Fangyu,et al."Leaf habit and plant height are associated with mortality risk of trees and shrubs during extreme drought in a Chinese savanna ecosystem".JOURNAL OF FORESTRY RESEARCH 36.1(2025):-. |
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| Leaf habit and plant（2158KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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