Use of stable isotopes of water for water cycle study

使用水的稳定同位素进行水循环研究

• 批准号: 10680500
• 负责人: SUGIMOTO Atsuko
• 金额: $ 2.11万
• 依托单位: KYOTO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10680500/
• 关键词: water cycle; isotopic composition of water; Sibcria; Tibet; groundwater; 安定同位体; 土壌; 植生; 水蒸気; 東南アジア熱帯林

1) Hydorologycal Research in Kiryu watershedStable isotopic compositions of water were measured for precipitation, soil water, groundwater, water in plants, spring water and stream water taken in Kiryu watershed (Otsu, Shiga Prefecture). From those data, information on the charge and discharge processes of groundwater were obtained.2) Network on precipitation sampling in Siberia, Tibet and SE AsiaSampling network was discussed for better understanding of water cycle. Precipitation samplings have been started at several sites in Siberia and Tibet. Sampling interval is important for obtaining the information with various time and spatial information. Data with short interval (5 to 10min) include the information on precipitation process in or around clouds. Daily data have information on the precipitation process and also origin of water vapor.3) Isotope model derived into atmospheric general circulation model was improved. Simulated results on the vertical profile of isotopic composition of water vapor was interestingly different from what has been believed.

1)桐生流域的水文学研究对桐生流域（滋贺县大津市）的降水、土壤水、地下水、植物水、泉水和溪水进行了稳定同位素组成测定。2）西伯利亚、西藏和东南亚降水采样网络的建立为了更好地理解水循环，对降水采样网络进行了讨论。在西伯利亚和西藏的几个地点已经开始进行降水取样。采样间隔对于获取具有多种时间和空间信息的信息是非常重要的。短间隔（5至10分钟）的数据包括云内或云周围降水过程的信息。逐日资料不仅具有降水过程的信息，而且具有水汽来源的信息。3）改进了同位素模式对大气环流模式的推导。水汽同位素组成垂直廓线的模拟结果与人们所认为的有很大的不同。

项目成果

Ohte, N., and Tokuchi, N: "Georgraphical variation of the acid buffering of vegetated catchments : Factors determining the bicarbonate leaching."Global Biogeochemical Cycles. 13. 969-996 (1999)

Ohte, N. 和 Tokuchi, N：“植被流域酸缓冲的地理变化：决定碳酸氢盐浸出的因素。”全球生物地球化学循环。

Numaguti,A.,Tsujimura,M.(他5名): "Large-Scale Hydrological Cycle in Tibet Revealed by Water Tracer Circulation Models and Isotope Observations"Proceedings of the 1st International Workshop on GAME Tibet. 1. 55-58 (1999)

Numaguti, A.、Tsujimura, M.（以及其他 5 人）：“水示踪环流模型和同位素观测揭示的西藏大规模水文循环”第一届 GAME 西藏国际研讨会论文集 1. 55-58（1999 年）。 ）

Numaguti,A., Tujimura, M. (他5名): "Large-Scale Hydrological Cycle in Tibet Revealed by Water Tracer chirculation Mdels and Isotope Observations."Proceedings of the 1st International Workshop on GAME Tibet. 1. 55-58 (1999)

Numaguti, A., Tujimura, M.（其他 5 人）：“水示踪剂循环模型和同位素观测揭示的西藏大规模水文循环”，第一届 GAME 西藏国际研讨会论文集（1999 年）。 ）

Takahashi, K., Sugimoto, A.: "The use of stable isotope ratios of water as indicators of the relations between water and vegetation."Japanese Journal of Ecology. 49. 59-62 (1999)

Takahashi, K., Sugimoto, A.：“使用水的稳定同位素比率作为水与植被之间关系的指标。”日本生态学杂志。

Ohte,N., Tokuchi,N.: "Geographic variation of the acid buffering of vegetad catchments : Factors determiming the bicarbonate leaching"Global Biogeochemical Cycles. 13. 969-996 (1999)

Ohte,N.，Tokuchi,N.：“植被集水区酸缓冲的地理变化：决定碳酸氢盐浸出的因素”全球生物地球化学循环。