LI Hui,JIANG Zhong-cheng,ZHOU Hong-fei,et al.Variation Characteristics of Oxygen and Hydrogen Stable Isotope in Precipitation, Soil Water and Groundwater in the Junggar Basin—Taking Fukang Station of Desert Ecology as a Case[J].Research of Soil and Water Conservation,2008,15(05):105-108.
准噶尔盆地降水、土壤水和地下水中δ18O和δD变化特征——以中国生态系统研究网络阜康站为例
- Title:
- Variation Characteristics of Oxygen and Hydrogen Stable Isotope in Precipitation, Soil Water and Groundwater in the Junggar Basin—Taking Fukang Station of Desert Ecology as a Case
- Keywords:
- oxygen stable isotope; hydrogen stable isotope; Gurbantonggut Desert; precipitation; soil water
- 分类号:
- P333
- 摘要:
- 本实验的研究材料（融雪水、雨水、土壤水、地下水）采集于2006年3-6月，取自位于古尔班通古特沙漠南缘中国科学院阜康荒漠生态系统研究站及北沙窝实验点，对其氢氧稳定性同位素比率δ18O和δD的测定结果进行了分析，研究了降水、土壤水稳定同位素变化特征，揭示干旱荒漠区降水和土壤水的关系。研究结果表明，表层10 cm土壤水受降水的直接影响，其δ18O具有与降水相同变化的趋势；地表浅层土壤水的稳定性同位素比率介于雪水和雨水之间；不同时间剖面土壤水的δ18O和重量含水量均为表层10 cm变化最大，具有向下变幅逐渐减少的趋势。地下水中δ18O在不同季节变化差异不大，地下水有一致、稳定的水源供应。本研究为稳定同位素技术在水循环研究中的应用提供了实例，也为古尔班通古特沙漠生态系统维持与恢复提供科学依据。
- Abstract:
- In this study, the research substances, including snow melt, rain water, soil water, groundwater, were collected from Fukang Station of Desert Ecology of Chinese Academy of Science located in the southern part of Gurbantunggut desert. During the experiment, we analyzed the ratio of the oxygen and hydrogen stable isotopes, researched the feature of changing in stable isotope of the precipitation, soil water and groundwater. The results show that: in spring, the δ18O in soil water which belongs to top soil with 10 cm is affected by the one in precipitation directly, and the tendency of its change resembles to that of the δ18O in precipitation. The differences among δ18O in groundwater in different seasons are not noticeable. Furthermore, the impact degree of different factors on the variations of stable oxygen isotope in the process of water cycle and their interaction are evaluated in the study, which provides an example for the application of stable isotopic technique to the study on water cycle.
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相似文献/References:
[1]李晖,蒋忠诚,王月,等.新疆地区大气降水中稳定同位素的变化特征[J].水土保持研究,2009,16(05):157.
LI Hui,JIANG Zhong-cheng,WANG Yue,et al.Variation Characteristics of Stable Isotopes in the Precipitation of Xinjiang[J].Research of Soil and Water Conservation,2009,16(05):157.
备注/Memo
收稿日期:2008-1-7。
基金项目:广西环境工程与保护评价重点实验室研究基金（桂科能0704K039）;广西师范大学青年基金重点资助
作者简介:李晖（1981- ），男，河南南阳人，讲师，主要从事植物生态、水文水资源与生态环境研究。E-mail：lh1029@126.com