Stable isotopes reveal sources of precipitation in the Qinghai Lake Basinof the northeastern Tibetan Plateau
Cui,BL(Cui,Buli)[1,3]; Li,XY(Li,Xiaoyan)[2,3]
2015-09-15
发表期刊Science of the Total Environment
卷号527-528期号:2015页码:26-37
文章类型期刊论文
摘要

The use of isotopic tracers is an effective approach for characterizing the moisture sources of precipitation in cold and arid regions, especially in the Tibetan Plateau (TP), an area of sparse human habitation with few weather and hydrological stations. This study investigated stable isotope characteristics of precipitation in the Qinghai Lake Basin, analyzed moisture sources using data sets from NCEP–NCAR, and calculated vapor contributions from lake evaporation to the precipitation in the basin using a two-component mixing model. Results showed that the Local Meteoric Water Line (LMWL) was defined as δ2H = 7.86 δ18O + 15.01, with a slope of less than 8, indicating that some non-equilibrium evaporation processes occurred when the drops fell below the cloud base. Temperature effects controlled δ18O and δ2H in precipitation in the basin, with high values in summer season and low values in winter season. Moisture in the basin was derived predominantly from the Southeast Asian Monsoon (SEAM) from June to August and the Westerly Circulation (WC) from September through May. Meanwhile, the transition in atmospheric circulation took place in June and September. The SEAM strengthened gradually, while the WC weakened gradually in June, and inversely in September. However, the Southwest Asian Monsoon (SWAM) did not reach the Qinghai Lake Basin due to the barrier posed by Tanggula Mountain. High d-excess (N10‰) and significant altitude and lake effects of δ18O in precipitation suggested that the vapor evaporated from Qinghai Lake, strongly influenced annual precipitation, and affected the regional water cycle in the basin distinctly. The monthly contribution of lake evaporation to basin precipitation ranged from 3.03% to 37.93%, with an annual contribution of 23.42% or 90.54 mm, the majority of which occurred in the summer season. The findings demonstrate that the contribution of evaporation from lakes to atmospheric vapor is fundamental to water cycling on the TP.

关键词Stable Isotope Deuterium Excess Precipitation Moisture Cycling The Qinghai Lake Basin
DOI10.1016/j.scitotenv.2015.04.105
收录类别SCI
语种英语
引用统计
被引频次:22[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/9524
专题黄土与第四纪地质国家重点实验室(2010~)
作者单位1.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China;
2.State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing 100875, China;
3.College of Resources Science and Technology, Beijing Normal University, Beijing 100875, China
推荐引用方式
GB/T 7714
Cui,BL,Li,XY. Stable isotopes reveal sources of precipitation in the Qinghai Lake Basinof the northeastern Tibetan Plateau[J]. Science of the Total Environment,2015,527-528(2015):26-37.
APA Cui,BL,&Li,XY.(2015).Stable isotopes reveal sources of precipitation in the Qinghai Lake Basinof the northeastern Tibetan Plateau.Science of the Total Environment,527-528(2015),26-37.
MLA Cui,BL,et al."Stable isotopes reveal sources of precipitation in the Qinghai Lake Basinof the northeastern Tibetan Plateau".Science of the Total Environment 527-528.2015(2015):26-37.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
Stable isotopes reve(4383KB)期刊论文作者接受稿开放获取CC BY-NC-SA请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Cui,BL(Cui,Buli)[1,3]]的文章
[Li,XY(Li,Xiaoyan)[2,3]]的文章
百度学术
百度学术中相似的文章
[Cui,BL(Cui,Buli)[1,3]]的文章
[Li,XY(Li,Xiaoyan)[2,3]]的文章
必应学术
必应学术中相似的文章
[Cui,BL(Cui,Buli)[1,3]]的文章
[Li,XY(Li,Xiaoyan)[2,3]]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。