玉龙雪山地区大气降水中粉尘颗粒物特征研究

doi:10.7522/j.issn.1000-0240.2014.0009

冰川冻土 ›› 2014, Vol. 36 ›› Issue (1): 71-79.doi: 10.7522/j.issn.1000-0240.2014.0009

玉龙雪山地区大气降水中粉尘颗粒物特征研究

牛贺文^1,2, 何元庆^1,2

1. 兰州大学西部环境教育部重点实验室/干旱环境与气候变化协同创新中心, 甘肃兰州 730000;
2. 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, 甘肃兰州 730000

收稿日期:2013-11-26 修回日期:2013-01-22 出版日期:2014-02-25 发布日期:2014-03-18
通讯作者: 何元庆，E-mail：yqhe@lzb.ac.cn E-mail:yqhe@lzb.ac.cn
作者简介:牛贺文（1986-），男，甘肃通渭人，2009年毕业于兰州交通大学，现为兰州大学在读博士研究生，主要从事雪冰化学和粉尘微粒研究. E-mail：niuhw11@lzu.edu.cn
基金资助:
国家自然科学基金创新研究群体项目（41121001；41273010）；冰冻圈科学国家重点实验室自主课题（SKLCS-ZZ-2012-01-02）；中国科学院知识创新群体项目（KZZD-EW-04-05-01）资助

Characteristics of the microparticles in atmospheric precipitation around the Mt. Yulong

NIU Hewen^1,2, HE Yuanqing^1,2

1. Key Laboratory of Western China's Environmental Systems (Ministry of Education) / Collaborative Innovation Centre for Arid Environments and Climate Change, Lanzhou University, Lanzhou 730000, China;
2. State Key Laboratory of Cryospheric Sciences, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China

Received:2013-11-26 Revised:2013-01-22 Online:2014-02-25 Published:2014-03-18

摘要/Abstract

摘要：

以在玉龙雪山地区采集的大气降水样品为主要研究载体，分析了大气降水中粉尘颗粒物随时间的变化特征和影响大气降水中粉尘含量的潜在因素. 结果表明：大气降水中颗粒物浓度和典型粉尘特征化学离子含量的变化具有很好的一致性，且季风期末大气降水中的微粒含量显著升高，显示了明显的季节性变化特征. 丽江市和甘海子盆地大气降水中粉尘化学离子含量(SO₄^2-，Mg²⁺，Ca²⁺，K⁺，NH₄⁺，NO₃^-，粉尘浓度)之间具有较好的相关性，反映了这些离子共同的来源. 降水中pH值和电导率的变化很大程度上受到粉尘活动的影响，海盐气溶胶粒子对玉龙雪山地区大气降水中典型粉尘微粒(除Cl^-和部分Na⁺之外)的沉降没有贡献. 此外，降水化学和微粒分析表明，丽江市区的大气环境不排除人为活动的影响.

关键词: 大气降水, 粉尘沉降, 玉龙雪山, pH值

Abstract:

In this paper, the characteristics of microparticles in atmospheric precipitation and the temporal variation of insoluble dust particles in rain water are analyzed primarily on the samples collected around the Mt. Yulong. The analyses indicate that there exist distinct seasonal features of the microparticles and chemical ions in precipitation, and the concentration of microparticles increase significantly in precipitation in the post-monsoon season, reflecting distinct seasonal variations of precipitation chemistry. The representative chemical ions and dust particles (SO₄^2-, Mg²⁺, Ca²⁺, K⁺, NH₄⁺, NO₃^- and dust) in Lijiang and Ganhaizi atmospheric precipitation are well correlated, indicating that they have common sources. Variations of chemical ions and dust particles in precipitation are greatly consistent with each other. The variations of pH value and electricity conductivity (EC) are greatly depended on and influenced by the dust events which frequently occur in spring or winter. It is also revealed that marine aerosols has no contribution to the dust deposition in precipitation around the Mt. Yulong, except for Cl^- and part of Na⁺. Moreover, chemical composition and dust analyses indicate that the atmospheric environment in Lijiang is somewhat influenced by the anthropogenic activities.

Key words: atmospheric precipitation, dust deposition, Mt. Yulong, pH value

中图分类号:

P426.65

牛贺文, 何元庆. 玉龙雪山地区大气降水中粉尘颗粒物特征研究[J]. 冰川冻土, 2014, 36(1): 71-79.

NIU Hewen, HE Yuanqing. Characteristics of the microparticles in atmospheric precipitation around the Mt. Yulong[J]. JOURNAL OF GLACIOLOGY AND GEOCRYOLOGY, 2014, 36(1): 71-79.

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玉龙雪山地区大气降水中粉尘颗粒物特征研究

Characteristics of the microparticles in atmospheric precipitation around the Mt. Yulong

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