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| 洞庭湖流域不同水体中同位素研究 | |
| 引用本文： | 黄一民,宋献方,章新平,何清华,韩青,凡非得,贺伟.洞庭湖流域不同水体中同位素研究[J].地理科学,2016,36(8):1252-1260. |
| 作者姓名： | 黄一民 宋献方 章新平 何清华 韩青 凡非得 贺伟 |
| 作者单位： | 1. 中国科学院地理科学与资源研究所陆地水循环及地表过程重点实验室,北京 100101 2. 衡阳师范学院城市与旅游学院,湖南 衡阳421008 3. 湖南师范大学资源与环境科学学院,湖南 长沙 410081 |
| 基金项目： | 国家自然科学基金（41401019,41271533）、地理国情监测国家测绘地理信息局重点实验室2013年度开放基金（2013NGCM02）和衡阳师范学院科研启动项目（12B42,13B51,14B35）资助 |
| 摘 要： | 在洞庭湖流域内的长沙、汨罗、怀化对大气降水、地表水（河水）、地下水（泉水、井水）进行了取样,分析了流域内不同水体中稳定水同位素的变化特征以及它们之间的转化关系。研究发现地处亚热带季风区的洞庭湖流域,地表水、地下水中同位素继承了降水同位素冬半年富集、夏半年贫化的特征,但存在不同程度的滞后。同时,降水同位素的变化幅度及波动性明显大于地表水及地下水,而地表水、地下水中同位素较降水中要富集。流域内河水中同位素大致表现出随纬度升高而贫化的趋势,这主要受降水同位素场的影响。流域内长沙河水、井水、泉水中同位素组成均位于大气水线附近且分别大致位于一直线上,这说明大气降水是这3种水体的主要补给源。不同季节河水、井水、泉水中同位素组成与大气水线的比较则进一步反映出了不同水体在不同季节的转化关系。 |
| 关 键 词： | 洞庭湖流域 稳定水同位素 水循环 |
| 收稿时间： | 2015-09-07 |
| 修稿时间： | 2015-11-12 |
Stable Water Isotopes of Different Water Bodies in the Dongting Lake Basin |
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| Yimin Huang,Xianfang Song,Xinping Zhang,Qinghua He,Qing Han,Feide Fan,Wei He.Stable Water Isotopes of Different Water Bodies in the Dongting Lake Basin[J].Scientia Geographica Sinica,2016,36(8):1252-1260. | |
| Authors: | Yimin Huang Xianfang Song Xinping Zhang Qinghua He Qing Han Feide Fan Wei He |
| Institution: | 1.Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Science and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China 2. City and Tourism Management Department, Hengyang Normal University, Hengyang 421008, Hunan, China 3. College of Resources and Environmental Sciences, Hunan Normal University, Changsha 410081, Hunan, China |
| Abstract: | In this study, stable water isotope compositions of different water bodies (such as precipitation, river waterfor surface water, spring and well water for ground water) were collected to reveal the characteristics of stable isotopes of different water bodies and conversion among them in Dongting Lake Basin, which located in the south of China. The results show that isotopes of surface and ground water inherit isotopes of precipitation’s rich in winter half year and depleted in the summer half year, and the variation trend of isotopes having been delayed in time. Referring to variation range and fluctuation of different water bodies’ isotope, precipitation’sisotope is more significant than surface and ground water’s. Generally, isotopes of river water is depleted with increasing latitude, which decided by the distribution of precipitation’s isotopes in space. Stable water isotope compositions of river, well and spring water distribute near the local meteoric water line suggests that precipitation is the main recharge source of the three water bodies. Furthermore, comparison of isotopic composition of surface and ground water with local meteoric water line in different season can reflect conversion of different water bodies. |
| Keywords: | Dongting Lake Basin stable water isotopes hydrological cycle |
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