Divergent patterns of foliar delta C-13 and delta N-15 in Quercus aquifolioides with an altitudinal transect on the Tibetan Plateau: an integrated study based on multiple key leaf functional traits

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	Divergent patterns of foliar delta C-13 and delta N-15 in Quercus aquifolioides with an altitudinal transect on the Tibetan Plateau: an integrated study based on multiple key leaf functional traits
	Chen, Litong 1,2; Flynn, Dan F. B.2; Zhang, Xiaowei 1; Gao, Xianliang 1; Lin, Ling 3; Luo, Jian 3; Zhao, Changming 1
	2015-06-01
发表期刊	JOURNAL OF PLANT ECOLOGY
卷号	8 期号:3 页码:303-312
文章类型	Article
摘要	Aims With a close association with plant water availability, foliar delta C-13 had been investigated extensively in alpine regions; however, foliar delta N-15 has rarely been concurrently used as an indicator of plant nitrogen availability. Due to the positive correlations between leaf nitrogen content and foliar delta C-13 and delta N-15 found in previous studies, we expected that they should show consistent patterns along an altitudinal gradient. Methods To test our hypothesis, we measured foliar delta C-13 and delta N-15 in conjunction with multiple key leaf functional traits of Quercus aquifolioides, a dominant species of alpine forest on the eastern slopes of the Sygera Mountains, southeastern Tibetan Plateau from 2500 to 3800 m. Important findings (i) Contrary to our hypothesis, foliar delta C-13 exhibited a significant positive linear relationship with altitude; in contrast, foliar delta N-15 initially increased and subsequently decreased with altitude, the change in trend occurring around 3300 m. (ii) Our analyses indicated that leaf internal resistance and stomatal conductance, rather than photosynthetic capacity indicated by leaf N concentration, apparently explained the altitudinal variation in foliar delta C-13, while differences in foliar delta N-15 were likely the result of soil N availability. (iii) Principal component analysis revealed a clear association between delta C-13 and a tradeoff between water loss and carbon gain, indicated by traits related to gas exchange such as leaf thickness, density, stomatal properties. In contrast, the second axis was associated with delta N-15 and nitrogen acquisition strategy in Q. aquifolioides across its altitudinal distribution, represented by traits related to nitrogen concentration and stomata per gram of leaf nitrogen.; Aims
关键词	Elevation Carbon And Nitrogen Isotopes Leaf Internal Resistance Leaf Mass Per Unit Area (Lma) Stomatal Conductance Trade-off
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
关键词[WOS]	CARBON-ISOTOPE DISCRIMINATION ; N-15 NATURAL-ABUNDANCE ; HAWAIIAN METROSIDEROS-POLYMORPHA ; TROPICAL RAIN-FORESTS ; NITROGEN AVAILABILITY ; GLOBAL PATTERNS ; MORPHOLOGICAL VARIATION ; PRECIPITATION GRADIENT ; ELEVATIONAL TRANSECTS ; WATER AVAILABILITY
收录类别	SCI
语种	英语
WOS研究方向	Plant Sciences ; Environmental Sciences & Ecology
WOS类目	Plant Sciences ; Ecology
WOS记录号	WOS:000359662100007
引用统计	被引频次：17[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/5545
专题	中国科学院西北高原生物研究所
作者单位	1.Lanzhou Univ, Sch Life Sci, State Key Lab Grassland Agroecosyst, Lanzhou 730000, Gansu, Peoples R China 2.Chinese Acad Sci, Key Lab Adaptat & Evolut Plateau Biota, Northwest Inst Plateau Biol, Xining 810008, Qinghai, Peoples R China 3.Tibetan Univ, Coll Tibet Agr & Anim Husb, Nyingchi 860000, Tibet, Peoples R China
推荐引用方式 GB/T 7714	Chen, Litong,Flynn, Dan F. B.,Zhang, Xiaowei,et al. Divergent patterns of foliar delta C-13 and delta N-15 in Quercus aquifolioides with an altitudinal transect on the Tibetan Plateau: an integrated study based on multiple key leaf functional traits[J]. JOURNAL OF PLANT ECOLOGY,2015,8(3):303-312.
APA	Chen, Litong.,Flynn, Dan F. B..,Zhang, Xiaowei.,Gao, Xianliang.,Lin, Ling.,...&Zhao, Changming.(2015).Divergent patterns of foliar delta C-13 and delta N-15 in Quercus aquifolioides with an altitudinal transect on the Tibetan Plateau: an integrated study based on multiple key leaf functional traits.JOURNAL OF PLANT ECOLOGY,8(3),303-312.
MLA	Chen, Litong,et al."Divergent patterns of foliar delta C-13 and delta N-15 in Quercus aquifolioides with an altitudinal transect on the Tibetan Plateau: an integrated study based on multiple key leaf functional traits".JOURNAL OF PLANT ECOLOGY 8.3(2015):303-312.

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