干旱区生态环境知识资源中心(Arid): 祁连山典型冰川雪冰主要化学离子特征及其环境意义

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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
其他题名	Major Ion Characteristics and Environmental Significance of Snow and Ice on Typical Glaciers in Qilian Mountains
	王明明 1; 李忠勤 2; 魏静 1; 王圣杰 1; 瞿德业 1; 应雪 1
来源期刊	环境科学研究
ISSN	1001-6929
出版年	2016
卷号	29 期号:10 页码:1459-1470
中文摘要	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 mug/L)>十一冰川(17 157.1 mug/L)>老虎沟12号冰川(7 729.6 mug/L)>八一冰川(2 248.1 mug/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SO_4~(2-)和Ca~(2+)均为主要的阴、阳离子,Ca~(2+)、SO_4~(2-)载量在阴、阳离子中均居首位〔rho(SO_4~(2-))/rho(阴离子)为52.7%,rho(Ca~(2+))/rho(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Ca~(2+)和Mg~(2+)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,Ca~(2+)和Mg~(2+)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rho(Cl~-)/rho(Na~+)在一定程度上可以反映盐湖离子输入的强度,NH_4~+和部分NO_3~-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.
英文摘要	Based on snow pit samples taken from Qiyi Glacier and Shiyi Glacier in 2011 and surface snow samples taken from Bayi Glacier in 2014,combined with samples collected from Laohugou Glacier No. 12 in Qilian Mountains,analysis was undertaken to determine the chemical characteristics and environmental significance of ions with correlation analysis,principal component analysis and backward trajectory of air mass. The concentration of ions followed the order: Qiyi Glacier (31, 014.2 mug/L) > Shiyi Glacier (17, 157.1 mug/L) > Laohugou Glacier No. 12 (7,729.6 mug/L) > Bayi Glacier(2, 248.1 mug/L), which revealed the spatial characteristic that the concentration of ions in snow and ice of middle Qilian Mountains was higher than that of the western region in Qilian Mountains. Ca~(2+) accounted for 68.5% of all cations and SO_4~(2-)for 52.7% of all anions,and the relative trend of ion percentage changed little apart from Bayi Glacier. Compared with various glaciers in other regions of High Asia and Polar Regions,dramatic regional differences existed in characteristics of ions that concentrations were higher than most of other regions. However,it was similar to the glaciers in the northeastern Tibetan Plateau,which had plenty of cations such as Mg~(2+) and Ca~(2+). Further study showed the desert nearby was the most important source and the quantity of Ca~(2+) and Mg~(2+) could reflect the dust transport level into snow. Besides,Cl~-and Na~+ were heavily affected by the lake salinity evaporating at Qaidam Basin in summer,but the contribution was not very prominent for other seasons with little evaporation of lake water. Therefore,the value of rho(Cl~-) /rho(Na~+) was an index,in a way,which reflected the effect of lake salinity in summer. NH_4~+ and part of NO_3~-were influenced by human activities. HYSPLIT backward trajectory of air mass demonstrated that air mass,originating from the western area and passing through a lot of desert,was the primary power to transmit ions into glaciers. In addition,some air mass, originating in the Indian Ocean,brought about plentiful rain.
中文关键词	祁连山 ; 雪冰 ; 离子 ; 化学特征 ; 环境意义
英文关键词	Qilian Mountains snow and ice ions chemical characteristics environmental significance
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:5826758
来源机构	西北师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/234515
作者单位	1.西北师范大学地理与环境科学学院, 兰州, 甘肃 730070, 中国; 2.西北师范大学地理与环境科学学院, 冰冻圈科学国家重点实验室, 兰州, 甘肃 730070, 中国
推荐引用方式 GB/T 7714	王明明,李忠勤,魏静,等. 祁连山典型冰川雪冰主要化学离子特征及其环境意义[J]. 西北师范大学,2016,29(10):1459-1470.
APA	王明明,李忠勤,魏静,王圣杰,瞿德业,&应雪.(2016).祁连山典型冰川雪冰主要化学离子特征及其环境意义.环境科学研究,29(10),1459-1470.
MLA	王明明,et al."祁连山典型冰川雪冰主要化学离子特征及其环境意义".环境科学研究 29.10(2016):1459-1470.