Application of seasonal variations of deuterium excess to the estimation of water sources of trees in humid areas like Japan
Application of seasonal variations of deuterium excess to the estimation of water sources of trees in humid areas like Japan
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氘过剩季节变化在日本等潮湿地区树木水源估算中的应用
DOI：
10.3178/hrl.6.65
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发表时间：
2012
影响因子：
1.1
通讯作者：
N. Kabeya
中科院分区：
文献类型：
--
作者：
Tayoko Kubota;Y. Tsuboyama;N. Kabeya
：虽然可以通过将茎水中的氧 18 或氘与半干旱地区可能的水源进行比较来估计植物吸收水分的深度，但该技术很难应用于相对湿润地区的用水调查，因为这些地区土壤水同位素比的垂直剖面比干旱和半干旱地区的土壤水同位素比的垂直剖面更为复杂。然而，日本降雨量的d-过剩（氘过剩）表现出明显的季节变化。因此，我们尝试利用d-excess的季节变化来估计20年生日本扁柏（Chamaecyparis obtusa）和日本雪松（Chriptomeria japonica）的水源。水源水可以根据其季节模式的差异来区分。两种物种茎部水d-excess的季节变化与浅层土壤水(<1.0 m)相似，但与其他水源不同，表明主要水源是浅层土壤水。
: Although the depths of water uptake by plants can be estimated by comparing oxygen 18 or deuterium in stem water with that of possible water sources in semi-arid regions, it is difficult to apply this technique to investigations of water use in relatively humid areas because the vertical profile of the isotopic ratio in soil water in such areas is more complicated than that in arid and semi-arid regions. However, the d-excess (deuterium excess) of rainfall in Japan shows clear seasonal variations. Therefore, we attempted to utilize seasonal variations of d-excess to estimate water sources of 20-year-old Japanese cypress ( Chamaecyparis obtusa ) and Japanese cedar ( Chriptomeria japonica ). Source water could be distinguished based on differences in their seasonal pattern of d-excess. The seasonal variations of d-excess in the stem water of both species were similar to those of shallow soil water (<1.0 m), but different from those of other water sources, indicating that the main water source was shallow soil water.
DOI：
--
发表时间：
2023
期刊：
影响因子：
--
作者：
Kimpei Ichiyanagi
通讯作者：
Kimpei Ichiyanagi
地下水平均停留时间的估算 日本小型水源流域地下水平均停留时间
DOI：
--
发表时间：
2006
期刊：
Hydrological Processes 21
影响因子：
--
作者：
Kabeya;N.;Katsuyama;M.;Kawasaki;M.;Ohte,N. and Sugimoto;A.
通讯作者：
A.
影响因子：
2
作者：
A. Sugimoto;Nao Yanagisawa;D. Naito;N. Fujita;T. Maximov
通讯作者：
A. Sugimoto;Nao Yanagisawa;D. Naito;N. Fujita;T. Maximov