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Different hydraulic traits of woody plants from tropical forests with contrasting soil water availability
Zhu, Shi-Dan; Chen, Ya-Jun; Fu, Pei-Li; Cao, Kun-Fang
2017
Source PublicationTREE PHYSIOLOGY
ISSN0829-318X
Volume37Issue:11Pages:1469-1477
AbstractIn southwestern China, tropical karst forests (KF) and non-karst rain forests (NKF) have different species composition and forest structure owing to contrasting soil water availability, but with a few species that occur in both forests. Plant hydraulic traits are important for understanding the species' distribution patterns in these two forest types, but related studies are rare. In this study, we investigated hydraulic conductivity, vulnerability to drought-induced cavitation and wood anatomy of 23 abundant and typical woody species from a KF and a neighboring NKF, as well as two Bauhinia liana species common to both forests. We found that the KF species tended to have higher sapwood density, smaller vessel diameter, lower specific hydraulic conductivity (k(s)) and leaf to sapwood area ratio, and were more resistant to cavitation than NKF species. Across the 23 species distinctly occurring in either KF or NKF, there was a significant tradeoff between hydraulic efficiency and safety, which might be an underlying mechanism for distributions of these species across the two forests. Interestingly, by possessing rather large and long vessels, the two Bauhinia liana species had extremely high k(s) but were also high resistance to cavitation (escaping hydraulic tradeoff). This might be partially due to their distinctly dimorphic vessels, but contribute to their wide occurrence in both forests.
Department其他
KeywordXylem Vulnerability Semiarid Climate Use Strategies Rain-forest Lianas Trees Cavitation Stems Tolerance Architecture
Subject AreaForestry
URL查看原文
Language英语
Document Type期刊论文
Identifierhttp://ir.xtbg.org.cn/handle/353005/10692
Collection植物生理生态研究组
Recommended Citation
GB/T 7714
Zhu, Shi-Dan,Chen, Ya-Jun,Fu, Pei-Li,et al. Different hydraulic traits of woody plants from tropical forests with contrasting soil water availability[J]. TREE PHYSIOLOGY,2017,37(11):1469-1477.
APA Zhu, Shi-Dan,Chen, Ya-Jun,Fu, Pei-Li,&Cao, Kun-Fang.(2017).Different hydraulic traits of woody plants from tropical forests with contrasting soil water availability.TREE PHYSIOLOGY,37(11),1469-1477.
MLA Zhu, Shi-Dan,et al."Different hydraulic traits of woody plants from tropical forests with contrasting soil water availability".TREE PHYSIOLOGY 37.11(2017):1469-1477.
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