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	Adaptive characteristics of grassland community structure and leaf traits along an altitudinal gradient on a subtropical mountain in Chongqing, China
	Song L. L. ; Fan J. W. ; Harris W. ; Wu S. H. ; Zhong H. P. ; Zhou Y. C. ; Wang N. ; Zhu X. D.
	2012
关键词	Altitudinal gradient Species richness Biomass LMA N(area) N(mass) Foliar delta(13)C carbon isotope discrimination qinghai-tibetan plateau species-richness elevational gradient stomatal conductance plant biomass life-span productivity trends photosynthesis
英文摘要	Community structure and leaf traits are important elements of terrestrial ecosystems. Changes of community structure and leaf traits are of particular use in the study of the influence of climate change on terrestrial ecosystems. Patterns of community structure (including species richness, above-and below-ground biomass) and leaf traits (including leaf mass per area (LMA), nitrogen content both on mass and area bases (N(mass) and N(area)), and foliar delta(13)C) from 19 grassland plots along an altitudinal transect at Hongchiba in Chongqing, China, were analyzed. Species richness along the altitudinal transect had a humpshaped pattern. Above-ground biomass had a quadratic decrease along the altitudinal gradient whereas below-ground biomass had the opposite pattern. Change of above-ground biomass of various taxonomic groups with altitude was also studied. Poaceae showed strong negative relationships and Asteraceae showed a hump-shaped relationship with increase of altitude. Five common species of the grassland, Trifolium pratense, Geranium wilfordii, Aster tataricus, Leontopodium leontopodioides, and Spiraea prunifolia, were particularly studied for variation of leaf traits along the altitudinal gradient. Averaged for all species, LMA, N(area) and foliar delta(13)C had positive correlations with altitude. N(mass) did not change significantly as altitude increased. LMA and N(area) showed significant positive relationships with foliar delta(13)C. The adaptive features of leaf traits among different species were not consistent. The study highlights specific adaptation patterns in relation to altitude for different plant species, provides further insights into adaptive trends of community structure and leaf traits in a specific ecological region filling a gap in the definition of global patterns, and adds to the understanding of how adaptive patterns of plants may respond to global climate change.
出处	Plant Ecology
卷	213
期	1
页	89-101
收录类别	SCI
语种	英语
ISSN号	1385-0237
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/26803]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Song L. L.,Fan J. W.,Harris W.,et al. Adaptive characteristics of grassland community structure and leaf traits along an altitudinal gradient on a subtropical mountain in Chongqing, China. 2012.

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