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祁连山典型冰川雪冰主要化学离子特征及其环境意义

王明明 李忠勤 魏静 王圣杰 瞿德业 应雪

王明明, 李忠勤, 魏静, 王圣杰, 瞿德业, 应雪. 祁连山典型冰川雪冰主要化学离子特征及其环境意义[J]. 环境科学研究, 2016, 29(10): 1459-1470.
引用本文: 王明明, 李忠勤, 魏静, 王圣杰, 瞿德业, 应雪. 祁连山典型冰川雪冰主要化学离子特征及其环境意义[J]. 环境科学研究, 2016, 29(10): 1459-1470.
WANG Mingming, LI Zhongqin, WEI Jing, WANG Shengjie, QU Deye, YING Xue. Major Ion Characteristics and Environmental Significance of Snow and Ice on Typical Glaciers in Qilian Mountains[J]. Research of Environmental Sciences, 2016, 29(10): 1459-1470.
Citation: WANG Mingming, LI Zhongqin, WEI Jing, WANG Shengjie, QU Deye, YING Xue. Major Ion Characteristics and Environmental Significance of Snow and Ice on Typical Glaciers in Qilian Mountains[J]. Research of Environmental Sciences, 2016, 29(10): 1459-1470.

祁连山典型冰川雪冰主要化学离子特征及其环境意义

基金项目: [ZK(]中国科学院重点部署项目(KJZD-EW-G03-01);国家重点基础研究发展计划(973)项目(2013CBA01801);西北师范大学2016年本科生创新能力提升计划项目(nwnucx20160133)[ZK)]

Major Ion Characteristics and Environmental Significance of Snow and Ice on Typical Glaciers in Qilian Mountains

  • 摘要: 基于2011年在祁连山七一冰川和十一冰川采集的雪坑样品和2014年在八一冰川采集的表层雪样品,并结合2006年老虎沟12号冰川的研究成果,通过Pearson相关分析、主成分分析以及HYSPLIT(Hybrid Single Practical Lagrangian Integrated Trajectory)后向气团轨迹分析各冰川雪冰中主要化学离子特征,并探讨其反映的环境意义.研究表明:①祁连山各冰川雪冰中化学离子总质量浓度序列为七一冰川(31 014.2 μg/L)>十一冰川(17 157.1 μg/L)>老虎沟12号冰川(7 729.6 μg/L)>八一冰川(2 248.1 μg/L),整体上呈中段雪冰化学离子质量浓度大于西段的空间分布特征;各冰川雪冰中SO42-和Ca2+均为主要的阴、阳离子,Ca2+、SO42-载量在阴、阳离子中均居首位〔ρ(SO42-)/ρ(阴离子)为52.7%,ρ(Ca2+)/ρ(阳离子)为68.5%〕,除八一冰川之外的其他三条冰川间化学离子载量变化不大.祁连山冰川雪冰中主要化学离子分布存在显著的区域特征,其含量整体上高于高亚洲的大多数冰川区域,但与青藏高原东北部一些冰川相似,都有含量极高的Ca2+和Mg2+等阳离子.②Pearson相关性和主成分分析结果显示,地表矿物粉尘输入是该区域雪冰中化学离子最主要的来源,Ca2+和Mg2+含量的多寡可以指示地表矿物的输入状况;此外,柴达木盆地盐湖在夏季对Cl-和Na+的贡献较大,但在湖水蒸发较弱的其他季节对雪冰中化学离子的贡献并不显著,夏季ρ(Cl-)/ρ(Na+)在一定程度上可以反映盐湖离子输入的强度,NH4+和部分NO3-主要来源于人类活动排放.③HYSPLIT后向气团轨迹反演结果表明,到达祁连山区的大多数气团主要发源于西部,途径沙漠地区,是冰川化学离子输入的主要动力,也有部分季风气团来自印度洋等海域,为冰川区带来大量降水.

     

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  • 收稿日期:  2016-03-27
  • 修回日期:  2016-05-29
  • 刊出日期:  2016-10-25

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