气候变化领域集成服务门户(CCPortal): Leaf shape alters the coefficients of leaf area estimation models for Saussurea stoliczkai in central Tibet

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DOI	10.1007/s11099-012-0039-1
	Leaf shape alters the coefficients of leaf area estimation models for Saussurea stoliczkai in central Tibet
	Wang, Z.; Zhang, L.
通讯作者	Zhang, L (通讯作者)
发表日期	2012
ISSN	0300-3604
EISSN	1573-9058
起始页码	337
结束页码	342
卷号	50 期号:3
英文摘要	Nondestructive methods to estimate individual leaf area (LA) accurately, by leaf length (L) and/or width (W), is helpful for the in situ and successive LA measurements. However, leaf shape and size may covary with environment and thus alter the coefficients of LA estimation models. To test such hypothesis, we carried out an experiment by measuring Saussurea stoliczkai C. B. Clarke leaves along an altitudinal transect in Damxung county, central Tibet. In July 2011, we selected seven sites at about every 150 m in altitude from 4,350 m to 5,250 m a.s.l. A total of 1,389 leaves (182 to 203 leaves for each site) were measured. For each site, models developed by two leaf dimensions [LA = a (LxW) + b] could estimate LA more accurately than those by single dimension. L, W, LA and leaf shape index (L:W ratio) all decreased with increasing altitude, leading to significant differences in coefficients of two-dimension model between almost every two sites. Accordingly, a common two-dimension model is unlikely to occur for S. stoliczkai across the whole altitudinal transect, indicating that the varying leaf shape may alter the coefficient of LA estimation models.
关键词	ALLOMETRIC MODELS PREDICTION MODEL SIZE MORPHOLOGY LENGTH TREE
英文关键词	alpine grassland; altitude; leaf area; leaf length and width; nondestructive methods
语种	英语
WOS研究方向	Plant Sciences
WOS类目	Plant Sciences
WOS记录号	WOS:000307309000004
来源期刊	PHOTOSYNTHETICA
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/257978
推荐引用方式 GB/T 7714	Wang, Z.,Zhang, L.. Leaf shape alters the coefficients of leaf area estimation models for Saussurea stoliczkai in central Tibet[J]. 中国科学院青藏高原研究所,2012,50(3).
APA	Wang, Z.,&Zhang, L..(2012).Leaf shape alters the coefficients of leaf area estimation models for Saussurea stoliczkai in central Tibet.PHOTOSYNTHETICA,50(3).
MLA	Wang, Z.,et al."Leaf shape alters the coefficients of leaf area estimation models for Saussurea stoliczkai in central Tibet".PHOTOSYNTHETICA 50.3(2012).