玉龙雪山周边典型河流雨季水化学特征分析  

Hydrochemical Characteristics of Three Rivers Around Yulong Mountain in Rainy Season

作　　者：蒲焘[1] 何元庆[1,2] 朱国锋[2] 辛惠娟[2] 杜建括[1] 王淑新[2] 王世金[2] 

机构地区：[1]兰州大学西部环境与气候变化研究院,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

出　　处：《地理科学》2011年第6期734-740,共7页Scientia Geographica Sinica

基　　金：国家自然科学基金项目(40971019);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);国家自然科学基金项目(90511007;40801028)资助;中国科学院"西部之光"人才培养计划"西部博士项目"(O828A11001);中国科学院研究生科技创新与社会实践专项;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

摘　　要：2009年5～10月在玉龙雪山周边典型小流域白水河、三束河、哥吉河采集河水样品,水化学分析结果表明,三条河流河水均呈现弱碱性,主要离子组成表现为富集Ca2++Mg2+和HCO3-+SO42-,且以Ca2+和HCO3-为主,各类离子存在显著季节变化。离子来源分析表明,玉龙雪山周边小流域河水雨季主要受降水和岩石风化影响,大气降水对河水主要常规离子Na+、K+、Ca2+、Mg2+、SO42-的贡献率为分别为23.44%,9.66%,3.10%,17.81%,10.48%。研究区碳酸盐岩的风化产物是河水离子组成的主要控制因素。In order to study the characteristics of hydrochemical composition in rivers,water samples were collected in Baishui,Sanshu and Geji hydrological stations around Yulong Mountain.The results indicated that water of the three rivers is mildly alkaline with rich with Ca2＋ and HCO3-.Obvious variations have been perceived during the rainy season.According to sources study of major ions,water of the three rivers were mainly influenced by precipitation and rock weathering function.The proportions of Na＋,K＋,Ca2＋,Mg2＋ and SO42-from precipitation in water are 23.44%,9.66%,3.10%,17.81%,and 10.48%,respectively.In addition,the ion characteristics of river water were mainly influenced by carbonating weather.The human activities should not be ignored though its influence was little.

关 键 词：玉龙雪山 河流 水化学特征 来源分析 

分 类 号：P592[天文地球—地球化学]