X img

官方微信

img

群号:冰川冻土交流群

QQ群:218834310

高级检索
作者投稿 专家审稿 编辑办公 编委办公 主编办公

冰川冻土 ›› 2021, Vol. 43 ›› Issue (5): 1277-1289.doi: 10.7522/j.issn.1000-0240.2021.0082

• 第二次青藏高原综合科学考察研究 • 上一篇    下一篇

青藏高原典型山地冰川中痕量元素的空间分布和来源分析

李若晨1,2(),申保收1,2(),武小波3,杨方社1,2,郭忠明1,2   

  1. 1.陕西省地表系统与环境承载力重点实验室,陕西 西安 710127
    2.西北大学 城市与环境学院/地表系统与 灾害研究院,陕西 西安 710127
    3.中国科学院 西北生态环境资源研究院,甘肃 兰州 730000
  • 收稿日期:2021-07-08 修回日期:2021-10-02 出版日期:2021-10-31 发布日期:2021-12-09
  • 通讯作者: 申保收 E-mail:liruochen@stumail.nwu.edu.cn;bsshen@nwu.edu.cn
  • 作者简介:李若晨,硕士研究生,主要从事环境水化学研究. E-mail: liruochen@stumail.nwu.edu.cn
  • 基金资助:
    第二次青藏高原综合科学考察研究项目(2019QZKK020102);陕西省自然科学基础研究计划一般项目(2021JQ-451)

Spatial distribution and source analysis of trace elements in typical mountain glaciers on the Qinghai-Tibet Plateau

Ruochen LI1,2(),Baoshou SHEN1,2(),Xiaobo WU3,Fangshe YANG1,2,Zhongming GUO1,2   

  1. 1.Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity,Xi’an 710127,China
    2.College of Urban and Environmental Sciences/Institute of Earth Surface System and Hazards,Northwest University,Xi’an 710127,China
    3.Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China
  • Received:2021-07-08 Revised:2021-10-02 Online:2021-10-31 Published:2021-12-09
  • Contact: Baoshou SHEN E-mail:liruochen@stumail.nwu.edu.cn;bsshen@nwu.edu.cn

摘要:

为了探究青藏高原雪冰中痕量元素的空间分布与主要来源,对2019年7—9月在青藏高原七一冰川、八一冰川、岗什卡雪峰、煤矿冰川、玉珠峰冰川、古仁河口冰川以及玉龙雪山白水河1号冰川采集的表雪样酸化后,利用电感耦合等离子体质谱仪(ICP-MS)测试了常量元素Al、Fe与痕量元素As、Ba、Co、Cr、Cu、Li、Mn、Mo、Pb、Sr、Tl、Zn、Cd共15种元素的含量,通过Jonckheere-Terpstra非参数检验分析痕量元素空间分布趋势。结果表明:中部煤矿冰川和玉珠峰冰川浓度最高,南部古仁河口冰川和玉龙雪山最低,东北部3条冰川居中;本研究与其他研究区关于冰川As、Cu、Pb、Zn、Cd浓度对比的结果显示,青藏高原冰川中元素含量的空间分布总体趋势为:中部>北部>南部。富集因子分析表明,Co、Cr、Cu、Tl、Fe、Li、Mn、Mo、Sr元素主要受粉尘输入影响,Pb、Cd、Zn元素受人为源影响较大(例如有色金属冶炼、交通排放、化石燃料燃烧等)。后向轨迹结果表明,东北部3条冰川主要受东北和西北部地区影响;中部冰川元素来源复杂,以青藏高原西部和北部的粉尘输入为主,且受西部临近煤矿和交通运输影响;南部冰川主要受南亚和青藏高原西南部地区影响。研究成果将进一步丰富青藏高原雪冰痕量元素数据库,为评估人类活动对青藏高原大气环境的污染和水源区的潜在环境风险提供科学依据。

关键词: 青藏高原, 痕量元素, 空间分布, 大气传输

Abstract:

In order to explore the spatial distribution and main sources of trace elements in the snow and ice of the Qinghai-Tibet Plateau, the surface snow samples at a depth of 0~5 cm collected from the Qiyi Glacier, Bayi Glacier, Gangshika Glacier, Meikuang Glacier, Yuzhufeng Glacier, Gurenhekou Glacier, and Baishuihe Glacier No.1 of Yulong Snow Mountain on the Qinghai-Tibet Plateau from July to September 2019 were analyzed to determine the concentrations of fifteen elements (Al, As, Ba, Co, Cr, Cu, Fe, Li, Mn, Mo, Pb, Sr, Tl, Zn, Cd). The spatial distribution trend of these trace elements was presented by Jonckheere-Terpstra non-parametric test. The results showed that the Meikuang Glacier and the Yuzhufeng Glacier in the central region had the highest concentration of trace elements, while the lowest concentrations were identified in the Gurenhekou Glacier and the Baishuihe Glacier No.1 of Yulong Snow Mountain in the southern region. We compared the concentrations of As, Cu, Pb, Zn and Cd with other glaciers in the study area, and the elemental distribution generally showed the decrease trend of Central>Northern>Southern regions on Qinghai-Tibet Plateau. Enrichment factor analysis showed that Co, Cr, Cu, Tl, Fe, Li, Mn, Mo and Sr were mainly affected by dust input, while Pb, Cd and Zn were more affected by anthropogenic sources (i.e. non-ferrous metal smelting, traffic emissions and fossil fuel combustion). The backward trajectory indicated that the three glaciers in the northeastern region were mainly affected by the air mass originated from northeastern and northwestern regions. The air mass source of the central glaciers was mainly from the dust input from the western and northern Qinghai-Tibet Plateau, which was influenced by the nearby coal mines. The two southern glaciers were mainly influenced by South Asia and the southwestern part of the Qinghai-Tibet Plateau. This research could expand the trace element database of snow and ice on the Qinghai-Tibet Plateau, providing scientific understanding for assessing the pollution of the Qinghai-Tibet Plateau’s atmospheric environment derived from human activities and the potential environmental risks of water source areas.

Key words: Qinghai-Tibet Plateau, trace elements, spatial distribution, atmospheric transport

中图分类号: 

  • X142