IMHE OpenIR  > Journal of Mountain Science  > Journal of Mountain Science-2016  > Vol13 NO.10
Variations in leaf functional traits and physiological characteristics of Abies georgei var.smithii along the altitude gradientin the Southeastern Tibetan Plateau
GUO Qi-qiang; LIHui-e; ZHANG Wen-hui
Corresponding AuthorGUO Qi-qiang
2016-10
Source PublicationJournal of Mountain Science
ISSN1672-6316
Volume13Issue:10Pages:1818-1828
Subtype期刊论文
AbstractVariations in leaf functional traits of Abies georgei var. smithii at 3700, 3900, 4100, 4300, and 4390 m altitude were investigated in 15 typical plots in the Southeastern Tibetan Plateau. In each plot, three seedlings were selected, of which functional leaves in current-year sunny branches were chosen for the measurement of morphological, photosynthetic, and physiological and biochemical characteristics, and their variations were analyzed. Results showed that significant variations existed among the leaf functional traits of A. georgei var. smithii along the altitudinal gradient, as well as their physiological adaption indicators. Leaf area decreased, while the mass per area and thickness of leaf increased at an altitude above 4,100 m. The maxima of pigment, total nitrogen concentration, net photosynthesis rate during light-saturated, and when water use efficiency appeared at 4100 m altitude. In addition, A. georgei var. smithii seedlings regulated the activities of superoxide dismutase and ascorbate peroxidase to resist abiotic stress under 4100 m altitude. Meanwhile, malondialdehyde concentration and the dark respiration rate rapidly increased, which indicates that A. georgei var. smithii seedlings suffered from heavy abiotic stress from 4100 m to 4390 m altitude. Basing on variations in leaf functional traitsalong the altitude gradient, we inferred that 4100 m altitude was the suitable region for A. georgei var. smithii growth in the Sygera Mountain. Moreover, the harsh environment was the main limiting factor for A. georgei var. smithii population expansion to high altitude.
KeywordAlpine Plant Abies Georgei Leaf Functional Traits Photosynthetic Parameters Enzyme Activity And Malondialdehyde Concentration
DOI10.1007/s11629-015-3715-3
Indexed BySCI
Language英语
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/17589
CollectionJournal of Mountain Science_Journal of Mountain Science-2016_Vol13 NO.10
Recommended Citation
GB/T 7714
GUO Qi-qiang,LIHui-e,ZHANG Wen-hui. Variations in leaf functional traits and physiological characteristics of Abies georgei var.smithii along the altitude gradientin the Southeastern Tibetan Plateau[J]. Journal of Mountain Science,2016,13(10):1818-1828.
APA GUO Qi-qiang,LIHui-e,&ZHANG Wen-hui.(2016).Variations in leaf functional traits and physiological characteristics of Abies georgei var.smithii along the altitude gradientin the Southeastern Tibetan Plateau.Journal of Mountain Science,13(10),1818-1828.
MLA GUO Qi-qiang,et al."Variations in leaf functional traits and physiological characteristics of Abies georgei var.smithii along the altitude gradientin the Southeastern Tibetan Plateau".Journal of Mountain Science 13.10(2016):1818-1828.
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