乌鲁木齐河源径流电导率和TDS的变化特征  

Variations of Conductivity and TDS of the Runoff at the Headwaters of the rümqi River,Tianshan Mountains

作　　者：韩添丁[1] 叶柏生[1] 李向应[1] 焦克勤[1] 李忠勤[1] 

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/天山冰川观测试验站,甘肃兰州730000

出　　处：《冰川冻土》2009年第4期759-765,共7页Journal of Glaciology and Geocryology

基　　金：国家自然科学基金项目(40871036);中国气象局公益性行业科研专项经费项目(GYHY200706008);国家重点基础研究发展计划(973计划)项目(2007CB411502);水利部公益性行业科研专项经费项目(2007SHZ1-46)资助

摘　　要：利用2003—2006年冰川消融期(5-8月)对乌鲁木齐河源1号冰川、空冰斗和总控3个水文点逐日定时(14:00时)的径流及电导率和TDS监测资料,分析河源区不同下垫面流域径流电导率和TDS的差异特征及各影响因素的控制作用.结果表明:观测到河源区不同断面径流的电导率和TDS的低值出现在高水期;峰值出现在低水期,而且1号冰川水文点的高值远超过空冰斗和总控水文点的高值,且变化幅度最大.河源区不同水文点径流的电导率及TDS变化主要与径流量大小关系密切,空冰斗融水径流主要受大气降水、季节性积雪融水和冻土活动层融水等影响,相应与土壤相互作用影响更大.总控水文点则明显地体现了1号冰川和空冰斗两水文点混合作用的影响特点.Analyses of conductivity and TDS in runoff samples collected from May to August in the three hydrological stations at the headwaters of the rümqi River during 2003-2006 are presented in this paper. The conductivity and TDS of stream flow within the headwater drainage of the rümqi River,Tianshan Mountains,is affected by various factors,such as runoff,air temperature,precipitation and talus-soil-water interaction in warm season.The analyses show that conductivity and TDS values are high in low water level and low in high water level at different hydrological sections.The values in Glacier No.1 Section are the highest among all sections,with large amplitude.The relationship between conductivity and TDS in runoff and runoff is close in general.A significant positive relationship between conductivity（TDS） and runoff demonstrates that the conductivity and TDS values of the runoff are controlled mainly by the discharge,air temperature,precipitation and etc.Stream flow in the Dry Cirque is more influenced by precipitation.The Total Control Hydrological Section generally shows a mixed effect of the Glacier No.1 Section and the Dry Cirque.

关 键 词：河川径流 冰川消融期 电导率和TDS 乌鲁木齐河源 

分 类 号：P332.7[天文地球—水文科学]