气候变化领域集成服务门户(CCPortal): Non-destructive leaf-area estimation for Bergenia purpurascens across timberline ecotone, southeast Tibet

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DOI	10.5735/085.047.0504
	Non-destructive leaf-area estimation for Bergenia purpurascens across timberline ecotone, southeast Tibet
	Zhang, Lin; Liu, Xin-Sheng
通讯作者	Zhang, L (通讯作者)
发表日期	2010
ISSN	0003-3847
EISSN	1797-2442
起始页码	346
结束页码	352
卷号	47 期号:5
英文摘要	Accurate and non-destructive methods to determine individual leaf areas of plants are a useful tool in physiological and agronomic research. Determining an individual leaf area (LA) involves measurements of leaf length (L) and width (W), or some combinations of both parameters. Investigation was carried out in 2008 and 2009 to test whether a model could be developed to estimate leaf area of Bergenia purpurascens along an elevational gradient across a timberline ecotone, southeastern Tibet. A total of 786 leaves, 153-159 leaves for each 100-m elevation range, were measured in June 2008 for model construction. Coefficients of LA models incorporating both leaf dimensions (L and W) or W alone were independent of elevation, suggesting that a common model can be employed to estimate LA across the whole elevation range. A single-variable model using the leaf width (LA = 1.44W(1.90)), which was simpler, more convenient and also allowed reliable LA estimations, was developed. By applying this equation to another independent dataset from a later experiment in June 2009 for model validation, we found that observed and predicted LAs exhibited a high degree of correlation (R-2 = 0.95). Therefore, this model can accurately estimate the leaf area of B. purpurascens across a timberline ecotone without use of any instruments.
关键词	ALLOMETRIC MODELS PREDICTION MODEL ACCURATE LENGTH
英文关键词	Bergenia purpurascens; elevation; leaf area; leaf length and width; linear measurements; non-destructive methods; timberline ecotone; validation
语种	英语
WOS研究方向	Plant Sciences
WOS类目	Plant Sciences
WOS记录号	WOS:000283637500004
来源期刊	ANNALES BOTANICI FENNICI
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/257722
推荐引用方式 GB/T 7714	Zhang, Lin,Liu, Xin-Sheng. Non-destructive leaf-area estimation for Bergenia purpurascens across timberline ecotone, southeast Tibet[J]. 中国科学院青藏高原研究所,2010,47(5).
APA	Zhang, Lin,&Liu, Xin-Sheng.(2010).Non-destructive leaf-area estimation for Bergenia purpurascens across timberline ecotone, southeast Tibet.ANNALES BOTANICI FENNICI,47(5).
MLA	Zhang, Lin,et al."Non-destructive leaf-area estimation for Bergenia purpurascens across timberline ecotone, southeast Tibet".ANNALES BOTANICI FENNICI 47.5(2010).