地理学报 ›› 2007, Vol. 62 ›› Issue (9): 992-1001.doi: 10.11821/xb200709010

• 环境化学 • 上一篇    下一篇

我国典型季风海洋性冰川区雪坑中 主要阴、阳离子的来源

李宗省1, 何元庆1, 庞洪喜1, 杨小梅2, 贾文雄1, 和献中1, 王旭峰1, 院玲玲1, 宁宝英1, 宋波1, 张宁宁1   

  1. 1. 中国科学院寒区旱区环境与工程研究所冰冻圈科学国家重点实验室,兰州730000;
    2. 西北师范大学地理与环境科学学院,兰州730070
  • 收稿日期:2007-05-18 修回日期:2007-06-28 出版日期:2007-09-25 发布日期:2010-08-04
  • 作者简介:李宗省(1984-), 男, 甘肃会宁人, 硕士研究生, 2006 年毕业于西北师范大学地理系。研究方向为冰川与全球 变化。E-mail: yxmlzx1982822@163.com
  • 基金资助:

    国家自然科学基金重点项目(90511007); 国家自然科学基金项目(40501014); 中科院重要方向性项目 (KZCXZ-YW-317); 基金委群体项目(40121101); 中科院创新群体项目(CXTD-Z2005-2)资助

Source of Major Anions and Cations of Snowpacks in the Typical Monsoonal Temper ate Glacial Region of China

LI Zongxing1, HE Yuanqing1, PANG Hongxi1, YANG Xiaomei2, JIA Wenxiong1, HE Xianzhong1, WANG Xufeng1, YUAN Lingling1, NING Baoying1, SONG Bo1, ZHANG Ningning1   

  1. 1. The State Key Laboratory of Cryosphere Science, Cold and Arid Region Environment and Engineering Research Institute,CAS, Lanzhou 730000, China;
    2. College of Geography and Environment Science, Northwest Normal University, Lanzhou 730070, China
  • Received:2007-05-18 Revised:2007-06-28 Online:2007-09-25 Published:2010-08-04
  • Supported by:

    National Key Natural Science Foundation of China, No.90511007; National Natural Science Foundation of China, No.40501014; The Project for Important Directionality Foundation, CAS, No.KZCXZ-YW-317; The Project for Outstanding Young Scientists of National Natural Science Foundation of China, No.40121101; The Knowledge Innovation Programme, CAS, No. CXTD-Z2005-2

摘要:

运用海盐示踪法、相关分析、趋势分析等方法,对我国两处典型季风海洋性冰川(海 螺沟1 号冰川和白水1 号冰川) 积累区雪坑主要化学离子来源进行了综合分析,结果表明: 两冰川区除Na+ 是海洋源外,其他离子主要是非海洋源;Cl-、NO3 -、SO4 2- 、K+、Ca2+、Mg2+ 非 海洋源所占的比重,在海螺沟1 号冰川依次为52%、99%、100%、98%、99.9%、83%,白水 1 号冰川依次为68%、99%、100%、98%、99%、59%;分析认为,海螺沟1 号冰川离子的非 海洋源主要是大气环流远源物质和高原面物质输入,而白水1 号冰川除上述来源外,冰川区 近源物质输入对离子浓度贡献很大。两冰川区各离子具体来源存在较大的差异性并且阴、阳 离子来源的共源性较低,其主要原因是:(1) 冰川区内局地环境的差异,比如岩性、山谷风系 统、地形地貌等;(2) 两冰川区离子淋溶作用强度的差异,分析认为,海螺沟1 号冰川离子淋 溶作用较强;(3) 不同离子的来源方式、沉降方式、自身化学特征以及沉积后过程不同所致。

关键词: 海螺沟1 号冰川, 白水1 号冰川, 离子

Abstract:

Snowpacks samples were collected from two glaciers: Baishui No.1 Glacier and Hailuogou No.1 Glacier in June, 2006. The methods of sea-salt ions tracer, correlation analysis and trend analysis were used in this research in order to confirm the source of main ions, which indicated that Na+ is mainly from marine moisture and other ions mainly originate from land dust; the non-marine source percentages of Cl-、NO3 -、SO4 2- 、K+、Ca2+、Mg2+ are 52%, 99%, 100%, 98%, 99.9% and 83%, respectively, in Hailuogou No.1 Glacier, while the corresponding values in Baishui No.1 Glacier are 68%, 99%, 100%, 98%, 99% and 59%. The non-marine source of ions is from dust of central Asian arid regions carried by westerly circulation and the plateau borne-areas with the Qinghai-Tibet Plateau winter monsoon in two glacial areas. However, the import of local dust in glacial area has made a great contribution to ions concentration in Baishui No.1 Glacier, which accounts for the much higher ions concentration in Baishui No.1 Glacier than that of Hailuogou No.1 Glacier. It is obvious that the source of each ion is different between Hailuogou No.1 Glacier and Baishui No.1 Glacier. There are three reasons which can explain it: firstly, the difference of the internal environment of the glacial area, such as lithology, hollow wind system, topographical relief and so on; secondly, the influence exerted by ions eluviation in snowpacks section with ions eluviation in Hailuogou No.1 Glacier being very strong; and thirdly, the discrepancies caused due to varying ions transporting styles, deposition modes, chemical characteristics and post-ions-deposition process.

Key words: Hailuogou No.1 Glacier, Baishui No.1 Glacier, ions