A comparison of methods for determining proximate carbon fractions of forest litter
A comparison of methods for determining proximate carbon fractions of forest litter
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DOI：
10.1139/x90-023
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发表时间：
1990-02
影响因子：
2.2
通讯作者：
M. G. Ryan;J. Melillo;A. Ricca
中科院分区：
文献类型：
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作者：
M. G. Ryan;J. Melillo;A. Ricca
将剩余重量从 16.6% 到 100% 不等的 10 个森林凋落物划分为子样本；使用两种化学分析程序（饲料纤维和林产品分析）之一分析每个子样本的近似碳分数。来自较简单的饲料纤维技术的近似碳分数可准确估计由更复杂的林产品分析确定的提取物、纤维素、木质素和酸水解碳水化合物（R2 > 0.83）。分解状态解释了大部分残余方差，并显着改进了木质素和提取物的预测方程。不同技术得出的近似碳分数之间的关系在木材、硬木叶和针叶树叶中也有所不同。然而，相对于总体趋势，变化很小。所开发的方程可用于扩展数据可用性，以开发和验证分解模型。
Ten forest litters with decomposition state varying from 16.6 to 100% weight remaining were partitioned into sub-samples; each subsample was analyzed for proximate carbon fractions using one of two chemical analysis procedures (forage fiber and forest products analyses). Proximate carbon fractions from the simpler forage fiber techniques accurately estimated extractives, cellulose, lignin, and acid-hydrolyzed carbohydrates (R2 > 0.83) determined by the more complex forest products analyses. Decomposition state accounted for most of the residual variance and significantly improved predictive equations for lignin and extractives. The relationship between proximate carbon fractions from the different techniques also varied somewhat among wood, hardwood leaves, and conifer leaves; however, variations were minor relative to the overall trend. Equations developed can be used to extend data availability for developing and validating decomposition models.