夏季玉龙雪山地区不同水体常规阴离子特征及其来源分析  

Character and Sources of Conventional Anion in Different Water Bodies on the Summer in Yulong Snow Mountain Area

作　　者：朱国锋[1,2] 何元庆[1,3] 蒲焘[3] 张宁宁[1,2] 王淑新[1,2] 辛惠娟[1,2] 

机构地区：[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/玉龙雪山冰川与环境观测研究站,兰州730000 [2]中国科学院研究生院,北京100049 [3]兰州大学西部环境与气候变化研究院,兰州730000

出　　处：《环境科学》2011年第3期626-631,共6页Environmental Science

基　　金：中国科学院"西部之光"人才培养计划项目(O828A11001);中国科学院重要方向性项目(KZCXZ-YW-317);国家自然科学基金项目(40971019;90511007;40801028);国家重点基础研究发展规划(973)项目(2007CB411501);冰冻圈科学国家重点实验室自主项目;国家自然科学基础人才培养基金冰川学冻土学特殊学科点项目(J0630966)

摘　　要：依据Dionex-3000型离子色谱仪和Dionex-600型离子色谱仪测定的云南省丽江市玉龙雪山地区2005年7月22日～7月28日不同水体的阴离子数据及同期降水中的无机离子数据,运用系统聚类、海盐示踪、后推气流模型分析等方法,分析了人类活动、岩石岩性、大气干湿沉降对我国云南省丽江市玉龙雪山地区不同水体阴离子构成和浓度的影响.结果显示,玉龙雪山地区阴离子浓度和组成在3 180 m以上受人类活动和岩石岩性影响较小,主要受大气干湿沉降影响,3 180 m以下人类活动和水岩作用对水体阴离子浓度的影响增强,人类活动和水岩作用对低海拔地区水体阴离子浓度和组成的影响远大于对高海拔地区的影响.聚类分析发现高海拔地区各水体阴离子浓度和离子组成一致性很强,低海拔地区水体间一致性较弱,说明低海拔水体离子浓度的影响机制较为复杂.海盐示踪法分析表明该区湿沉降中Cl-非海洋源平均值为65%;NO 3-认为是陆源物质贡献;SO24-平均值为93.7%,说明海盐对Cl-浓度影响较大;后推气流轨迹模型分析表明2005年7月22日～7月30日气团主要来自于印度洋,沿途主要经过南亚地区,同时有少量来自于东太平洋的气团,SO24-和NO 3-主要为南亚、东南亚和我国东南沿海工业区的污染物质随季风环流输入.Different water samples were collected at Mt.Yulong Region located in lijiang city,Yunnan Province from July 22 to July 28 in 2005.The concentration of anion was measured by Dionex-3000 Ion chromatography and Dionex-600 ion chromatography,different water bodies anion composition and concentration in the study area were analyzed by applying approaches of cluster analysis sea salt iron tracer and typical backward trajectories analyze.The results show that the anion concentration of water of altitude higher than 3 180 m takes on natural state and the influence of human activities and foundation rock is less significant.However,human activities and foundation rock exert direct and decisive influence on the anion concentration of water of altitude lower than 3 180 m,with more significant effects than high altitude.Cluster analysis shows that at high altitude anion concentration and composition of water have strong consistency,the consistency of different water bodies in low altitude area anions is weak,indicating the influence factors is more complex in low altitude than high altitude.Sea salt tracer analysis indicates that the average proportion of nonmarine source of Cl-is 65%;NO 3-is predominantly of continental origin;nonmarine sources proportion of SO42-is 93.7%.Typical backward trajectories analyze found that the mostly vapor in the region mainly from the Indian Ocean,part of the vapors from the eastern Pacific,the west wind South Branch occasionally along Tibetan Plateau into the study area.SO42-and NO 3-which from mainly from Southeast Asia and South Asia input with the monsoon circulation.

关 键 词：玉龙雪山地区 阴离子 海盐示踪 系统聚类分析 相关性分析 

分 类 号：X13[环境科学与工程—环境科学]