| 古浪河流域大气降水稳定同位素的时空特征及其环境意义 |
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| 引用本文： | 桂娟,李宗省,冯起,卫伟,李永格,吕越敏,袁瑞丰,张百娟.古浪河流域大气降水稳定同位素的时空特征及其环境意义[J].环境科学,2019,40(1):149-156. |
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| 作者姓名： | 桂娟 李宗省 冯起 卫伟 李永格 吕越敏 袁瑞丰 张百娟 |
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| 作者单位： | 中国科学院西北生态环境资源研究院( 筹), 内陆河流域生态水文重点实验室, 甘肃省水文水资源工程技术中心,兰州 730000;中国科学院大学, 北京 100049;中国科学院西北生态环境资源研究院( 筹), 内陆河流域生态水文重点实验室, 甘肃省水文水资源工程技术中心,兰州 730000;中国科学院生态环境研究中心,北京,100085 |
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| 基金项目： | 中国科学院青年创新促进会优秀会员人才计划项目（2013274）；中国科学院大学生科技创新实践计划项目；城市与区域生态国家重点实验室开放基金项目（SKLURE2018-2-6）；国家自然科学基金项目（91547102）；甘肃省杰出青年基金项目（1506RJDA282） |
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| 摘 要： | 依据古浪河流域古浪站(海拔2 085 m)和安远站(海拔2 700 m)所采集的降水样品和相关气象数据,分析了降水稳定同位素的时空变化、局地大气水线,讨论了温度、降水量和相对湿度与降水稳定同位素的关系.结果表明:(1)两站δ18O均呈现出夏秋季高、冬春季低的特征;(2)从古浪到安远站,δ18O的月均值随海拔升高呈下降趋势,相反地,d-excess随海拔升高呈增加趋势,反映了当气团沿着山坡不断抬升时,水汽再循环过程加强;(3)稳定同位素特征表明该区除了受干燥的环境和较强的蒸发影响外,可能还受到局地水汽再循环影响;(4)处于低海拔地区的古浪站的温度效应比安远站更显著,古浪河流域整体上没有呈现出降水量效应.该研究结果有助于进一步深入了解古浪河流域的水循环过程.
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| 关 键 词： | 稳定同位素 古浪河流域 大气降水 环境意义 干旱区 |
| 收稿时间： | 2018/4/5 0:00:00 |
| 修稿时间： | 2018/7/9 0:00:00 |
Space-Time Characteristics and Environmental Significance of the Stable Isotopes in Precipitation in the Gulang River Basin |
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| GUI Juan,LI Zong-xing,FENG Qi,WEI Wei,LI Yong-ge,L&#; Yue-min,YUAN Rui-feng and ZHANG Bai-juan.Space-Time Characteristics and Environmental Significance of the Stable Isotopes in Precipitation in the Gulang River Basin[J].Chinese Journal of Environmental Science,2019,40(1):149-156. |
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| Authors: | GUI Juan LI Zong-xing FENG Qi WEI Wei LI Yong-ge L&#; Yue-min YUAN Rui-feng and ZHANG Bai-juan |
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| Institution: | Key Laboratory of Ecohydrology of Inland River Basin, Gansu Hydrology and Water Resources Engineering Research Center, Northwest Institute of Eco-environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China;University of Chinese Academy of Sciences, Beijing 100049, China,Key Laboratory of Ecohydrology of Inland River Basin, Gansu Hydrology and Water Resources Engineering Research Center, Northwest Institute of Eco-environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China,Key Laboratory of Ecohydrology of Inland River Basin, Gansu Hydrology and Water Resources Engineering Research Center, Northwest Institute of Eco-environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China,Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China,Key Laboratory of Ecohydrology of Inland River Basin, Gansu Hydrology and Water Resources Engineering Research Center, Northwest Institute of Eco-environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China;University of Chinese Academy of Sciences, Beijing 100049, China,Key Laboratory of Ecohydrology of Inland River Basin, Gansu Hydrology and Water Resources Engineering Research Center, Northwest Institute of Eco-environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China;University of Chinese Academy of Sciences, Beijing 100049, China,Key Laboratory of Ecohydrology of Inland River Basin, Gansu Hydrology and Water Resources Engineering Research Center, Northwest Institute of Eco-environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China and Key Laboratory of Ecohydrology of Inland River Basin, Gansu Hydrology and Water Resources Engineering Research Center, Northwest Institute of Eco-environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China |
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| Abstract: | |
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| Keywords: | stable isotopes Gulang River Basin precipitation Environmental significance arid region |
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