期刊
CHEMICAL GEOLOGY
卷 252, 期 1-2, 页码 52-55出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.chemgeo.2008.01.014
关键词
tree rings; stable-carbon isotopes; pooling; conifers
Pooling of growth rings from several trees before subsequent isotopic analysis of the mixture may offer the advantage of obtaining representative isotopic values fairly rapidly. In principle, however, unless equal masses are taken from the individuals to make the composite sample, the measured isotope value will be biased by the relative mass contribution of the trees, each of which likely has a different isotopic composition. Although biasing associated with direct pooling without regard to mass may happen, this study provides evidence (at least for stable-carbon isotope composition) from three sites in the U.S. Midwest and Southwest that the error (probably more appropriately called difference) is negligible with respect to error of preparation and analysis, and variability of isotopic composition within and among trees at a site. (C) 2008 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据