Quantifying terminal white bands in Salix from the Yenisei river, Siberia and their relationship to late-season flooding
Quantifying terminal white bands in Salix from the Yenisei river, Siberia and their relationship to late-season flooding
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量化西伯利亚叶尼塞河柳的末端白色带及其与晚季洪水的关系
DOI：
10.1007/s00468-023-02386-5
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发表时间：
2023
期刊：
影响因子：
--
通讯作者：
Agafonov, Leonid I.
中科院分区：
文献类型：
--
作者：
Thaxton, Richard D.;Panyushkina, Irina P.;Meko, David M.;von Arx, Georg;Agafonov, Leonid I.
Key MessageWood纤维细胞壁厚度最好的特点白色带发现在某些生长轮的末端inSalix alba.Evidence表明，这些功能是有关的季末hydrogen.AbstractRecent，在叶尼塞河，西伯利亚破纪录的排放量，是一个更大的趋势，增加河流流量在北极驱动北极放大的一部分。这些排放量和时间的变化可能导致极端洪水事件的风险增加，对基础设施，生态系统和气候产生影响。为了更好地了解这些变化对河岸树木生长的影响沿着下游的叶尼塞河，我们收集了白色杨柳（柳alba）的横截面从河流填充平坦的梯田，偶尔洪水时，水位非常高。这些样本在某些年轮的末端显示出浅色木材的条带，我们假设这些年轮与洪水事件有关。为了确定这些特征的特征和原因，我们使用一种称为定量木材解剖学（QWA）的方法来测量树木年轮中纤维细胞尺寸的变化，特别是纤维腔面积（LA）和细胞壁厚度（CWT）。我们调查（1）细胞参数和方法提取年内数据从一年生树木年轮最好的捕获终端白色带确定在柳，和（2）如果这些模式与洪水规模和/或持续时间。我们发现，纤维CWT最好地捕捉终端白色带发现在柳树。从CWT测量得出的时间序列与7月水位持续时间相关，但水位太低，无法被标记为洪水。虽然自1980年以来，终端白色带和7月洪水都有所减少，但终端白色带的原因仍然存在疑问。了解河岸植被对水文变化的反应可以帮助我们更好地管理河岸生态系统，并了解北极水文状况变化的影响。
Key MessageWood fiber cell wall thickness best characterizes white bands found at the end of certain growth rings inSalix alba.Evidence suggests these features are related to late-season hydrology.AbstractRecent, record-breaking discharge in the Yenisei River, Siberia, is part of a larger trend of increasing river flow in the Arctic driven by Arctic Amplification. These changes in magnitude and timing of discharge can lead to increased risk of extreme flood events, with implications for infrastructure, ecosystems, and climate. To better understand the effect of these changes on riparian tree growth along the lower reaches of the Yenisei River, we collected white willow (Salix alba) cross sections from a fluvial fill flat terrace that occasionally floods when water levels are extremely high. These samples displayed bands of lighter colored wood at the end of certain annual growth rings that we hypothesized were related to flood events. To identify the characteristics and causes of these features, we use an approach known as quantitative wood anatomy (QWA) to measure variation in fiber cell dimensions across tree rings, particularly fiber lumen area (LA) and cell wall thickness (CWT). We investigate (1) which cell parameters and method to extract intra-annual data from annual tree rings best capture terminal white bands identified inSalix, and (2) if these patterns are related to flood magnitude and/or duration. We find that fiber CWT best captures terminal white bands found inSalixrings. Time series derived from CWT measurements correlate with July water-level durations, but at levels too low to be labeled flooding. Although both terminal white bands and July flooding have reduced since 1980, questions remain as to the cause of terminal white bands. Understanding how riparian vegetation responds to changes in hydrology can help us better manage riparian ecosystems and understand the impacts of a changing Arctic hydrological regime.
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影响因子：
16.6
作者：
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通讯作者：
Ishitsuka Y
影响因子：
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作者：
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影响因子：
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作者：
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使用初步测试来比较两个样本平均值
DOI：
--
发表时间：
1981
期刊：
影响因子：
--
作者：
D. J. Gans
通讯作者：
D. J. Gans
影响因子：
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作者：
Swidrak, Irene;Gruber, Andreas;Oberhuber, Walter
通讯作者：
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