Preliminary study of flow regimes and stream water residence times in multi-scale forested watersheds of central Cambodia
Preliminary study of flow regimes and stream water residence times in multi-scale forested watersheds of central Cambodia
复制标题
柬埔寨中部多尺度森林流域水流形态及溪流停留时间初步研究
DOI：
10.1007/s10333-008-0104-3
复制
发表时间：
2008
影响因子：
2.2
通讯作者：
K. Tamai
中科院分区：
文献类型：
--
作者：
N. Kabeya;A. Shimizu;T. Nobuhiro;K. Tamai
为了阐明湄公河流域低地森林的水循环，我们的研究小组在柬埔寨磅同省的上吉尼特河流域建立了四个实验流域。这些试验流域的流域面积从小尺度（4 km2）到中尺度（3659 km2）不等。在这里，我们提出了我们的降雨-排放观测的第一个初步结果，并分析了降雨、水流和地下水中稳定同位素比率的时间变化。本文主要研究了以下三个主题：年降雨量、流量和水平衡；风暴流的产生和主要气流路径；流动状态和水流停留时间。4个试验流域的所有水流停留时间（τ= 1.7 ~ 7.5个月）均短于地下水在土壤和风化层中的停留时间（τ= 9.4个月），这表明水流不仅包括地下水流成分，还包括较年轻的流成分，如饱和过量的地面流。最小的流域（4 km2; O Toek lok）比三个较大的流域（126-3,659 km2;τ= 1.7-3.9个月）的停留时间更长（τ= 7.5个月）。这可能表明在每个流域中，地下水和较年轻的水流成分的贡献是不同的。我们的多尺度流域观测方法可以更好地满足基于物理模型的需求，并有助于对未测量的流域进行预测。
To elucidate the water cycle in lowland forests of the Mekong River basin, our research group established four experimental watersheds in the Stung Chinit River basin in Kampong Thom Province, Cambodia. The drainage areas of these experimental watersheds ranged from small (4 km2) to mesoscale (3,659 km2). Here, we present the first preliminary results of our rainfall-discharge observations and analyses of temporal variations of stable isotope ratios in rainfall, stream water, and groundwater. This paper focuses on the following three main topics: annual rainfall, discharge, and water balance; stormflow generation and dominant flow pathways; and flow regimes and stream water residence times. All stream water residence times (τ= 1.7–7.5 months) for the four experimental watersheds were shorter than the residence time of the groundwater (τ= 9.4 months) through the soil and regolith layers, implying that the stream waters consisted of not only the groundwater-flow component, but also younger-aged flow components such as saturation-excess overland flow. The smallest (4 km2; O Toek Loork) watershed had longer residence time (τ= 7.5 months) than the three larger watersheds (126–3,659 km2;τ= 1.7–3.9 months). This may suggest differing contributions of the groundwater and younger-aged flow components in the stream water in each watershed. Our approach of multi-scale watershed observation might better contribute to the needs of physically based models and aid in predictions for ungauged basins.
DOI：
10.1007/978-4-431-46503-4
发表时间：
2007
期刊：
--
影响因子：
--
作者：
H. Sawada;M. Araki;N. Chappell;J. Lafrankie;A. Shimizu
通讯作者：
H. Sawada;M. Araki;N. Chappell;J. Lafrankie;A. Shimizu
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.
和陌生人住在一起
DOI：
--
发表时间：
2021
期刊：
図書
影响因子：
--
作者：
Soren Rud;Ulrik Pram Gad;Jacob Isbosethsen and Minori Takahashi;鵜戸聡
通讯作者：
鵜戸聡