气候变化领域集成服务门户(CCPortal): Allometric models for leaf area estimation across different leaf-age groups of evergreen broadleaved trees in a subtropical forest

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DOI	10.1007/s11099-011-0027-x
	Allometric models for leaf area estimation across different leaf-age groups of evergreen broadleaved trees in a subtropical forest
	Zhang, L.; Pan, L.
通讯作者	Zhang, L (通讯作者)
发表日期	2011
ISSN	0300-3604
EISSN	1573-9058
起始页码	219
结束页码	226
卷号	49 期号:2
英文摘要	The accurate and nondestructive determination of individual leaf area (LA) of plants, by using leaf length (L) and width (W) measurement or combinations of them, is important for many experimental comparisons. Here, we propose reliable and simple regressions for estimating LA across different leaf-age groups of eight common evergreen broadleaved trees in a subtropical forest in Gutianshan Natural Reserve, eastern China. During July 2007, the L, W, and LA of 2,923 leaves (202 to 476 leaves for each species) were measured for model construction and the respective measurements on 1,299 leaves were used for model validation. Mean L, W, LA and leaf shape (L:W ratio) differed significantly between current and older leaves in four out of the eight species. The coefficients of one-dimension LA models were affected by leaf age for most species while those incorporating both leaf dimensions (L and W) were independent of leaf age for all the species. Therefore, the regressions encompassing both L and W (LA = a L W + b), which were independent of leaf age and also allowed reliable LA estimations, were developed. Comparison between observed and predicted LA using these equations in another dataset, conducted for model validation, exhibited a high degree of correlation (R (2) = 0.96-0.99). Accordingly, these models can accurately estimate the LA of different age groups for the eight evergreen tree species without using instruments.
关键词	ACCURATE LENGTH
英文关键词	evergreen broadleaved trees; leaf age; leaf area; leaf length and width; subtropical forest
语种	英语
WOS研究方向	Plant Sciences
WOS类目	Plant Sciences
WOS记录号	WOS:000292308000007
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/257898
推荐引用方式 GB/T 7714	Zhang, L.,Pan, L.. Allometric models for leaf area estimation across different leaf-age groups of evergreen broadleaved trees in a subtropical forest[J]. 中国科学院青藏高原研究所,2011,49(2).
APA	Zhang, L.,&Pan, L..(2011).Allometric models for leaf area estimation across different leaf-age groups of evergreen broadleaved trees in a subtropical forest.PHOTOSYNTHETICA,49(2).
MLA	Zhang, L.,et al."Allometric models for leaf area estimation across different leaf-age groups of evergreen broadleaved trees in a subtropical forest".PHOTOSYNTHETICA 49.2(2011).