尼洋河流域不同水体电导率变化特征及影响因素  

The variation characteristics of water electronic conductivity and influence factors in Niyang river basin

作　　者：张涛[1] 李颖智[1] 蔡五田[1] 耿婷婷[1] 张智印 边超[1] 赵淼[1] 蔡月梅 

机构地区：[1]中国地质调查局水文地质环境地质调查中心,保定070051

出　　处：《干旱区资源与环境》2018年第4期126-131,共6页Journal of Arid Land Resources and Environment

基　　金：中国地质调查局地质调查项目(12120114059601);(DD20160298)。资助

摘　　要：为研究尼洋河流域不同水体电导率变化特征及其影响因素,2014年8月在尼洋河流域采集样品89组,对水样的电导率、pH和水温进行了现场测试,并记录样品采集时的气温及采样点高程。电导率变化范围为16.2~414μS·cm^(-1)之间,平均为118.2μS·cm^(-1),pH变化范围为6.68~8.19之间,平均为7.29;气温变化范围为12.1~24.8℃之间,平均为19.7℃,水温变化范围为5-19.6℃之间,平均为13.5℃,高程变化范围为2930~5100m之间,平均为3427m。运用数理统计、相关关系矩阵等方法对数据进行了分析,结果表明尼洋河流域电导率沿流向呈递减趋势,主要是由于pH、气温及水温的变化引起,pH与电导率有较强的相关关系,相关常数为-0.398,主要是由于pH的减小使矿物质溶解增多,从而导致电导率增大。To study the variation characteristics and influence factors of the water electronic conductivity in Niy- ang River basin, 89 samples were collected in August 2014. Electronic conductivity, pH and temperature were tested, and the temperature and altitude were recorded . The electronic conductivity was in the range of 16.2 - 414μ S·cm^-1 , with an average of 118.2μS·cm^-1. The pH was in the range of 6.68 -8.19, with an average of 7.29. The temperature was in the range of 12.1 -24.80℃, with an average of 19.7℃. The water temperature was in the range of 5 -19.6℃, with an average of 13.5℃. The altitude was in the range of 2930 -5100m, with an average of 3427m. The variations of electronic conductivity have been studied by means of mathematical statistics and correlation matrix. The results showed that the electronic conductivity along the flow direction showed a decreasing trend in Niyang river basin, mainly due to the change of pH, temperature and water temperature. There was a strong correlation between pH and electronic conductivity, and relative constant was - 0.398, dis- solved minerals increased with the decrease of pH.

关 键 词：电导率 变化特征 影响因素 尼洋河 

分 类 号：X824[环境科学与工程—环境工程]