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首页> 外文期刊>Arabian Journal for Science and Engineering. Section A, Sciences >Climate-Sensitivity Comparisons forWhole Wood, Holocellulose, and α-Cellulose Carbon Isotope Series in Masson Pine
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Climate-Sensitivity Comparisons forWhole Wood, Holocellulose, and α-Cellulose Carbon Isotope Series in Masson Pine

机译：气候敏感性比较Masson Pine中的木材，全孔纤维素和α-纤维素碳同位素系列

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摘要

A large number of studies have analyzed the annual growth rings and environmental drivers in subtropical China. However,how environmental and physiological effects define the isotopic composition of the wood in this region is poorly understood.Here, we explored the potential of applying three components (whole wood, holocellulose, and α-cellulose) of stable carbonisotopes from Masson pine (Pinus massoniana Lamb.) to dendroclimatology. Sampling sites were covered at the northern,eastern, southern, and western margins of theMasson pine distribution in subtropical China. The results showed that the meanδ~(13)C of holocellulose and α-cellulose both had more enriched values than whole wood, with differences of 1.261±0.233‰and 1.311±0.189‰, respectively, within individual trees. The three components displayed uniform year-to-year variationsand common significant climatic signals, indicating that the δ~(13)C of whole wood from Masson pine was enough to reconstructinterannual paleoclimate information without cellulose isolation due to its high climate sensitivity and low time requirements.The mean δ~(13)C record was significantly and negatively correlated with autumn hydroclimatic parameters (e.g., relativehumidity and precipitation) in each study area. This study provides evidence of the influence of hydroclimatic variation onMasson pine forests at a large spatial scale and further enhances the interpretation of climate variations.
机译：大量研究分析了亚热带中国的年度增长环和环境司机。然而，环境和生理效应如何定义该地区在该地区的木材同位素组成差异很差。在这里，我们探讨了应用稳定碳的三种组分（全木，全纤维素和α-纤维素）的潜力来自马龙松（Pinus Massoniana羊肉）的同位素。到树枝状症。北方的抽样网站被覆盖，亚热带中国的东部，南部和西方利基分布。结果表明平均值Holocellulose和α-纤维素的δ〜（13）C具有比整个木材更丰富的值，差异为1.261±0.233‰单个树内分别为1.311±0.189‰。这三个组件显示了统一的年度变化和常见的显着气候信号，表明来自马龙松的整个木材的δ〜（13）C足以重建由于其高气候敏感性和低时间要求，无纤维素隔离的依赖性古古怪信息。平均δ〜（13）C记录与秋季循环参数有显着和负面相关（例如，相对每个研究区域的湿度和降水）。本研究提供了液压革动物变异影响的证据马龙松森林以大量的空间规模，进一步增强了气候变化的解释。

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