中国西北诸河水化学特征调查与研究

河流水化学的变化可以从一定程度上反映出人类活动对水环境的影响,掌握河流水化学特征及其分布规律有助于合理利用和保护宝贵的水资源.根据近5 a来对西北诸河的水化学监测资料,统计出了主要河流水化学状况;分析了河川径流矿化度、总硬度和水化学类型的地区分布,并与20世纪80年代第一次西北诸河水资源调查评价的结果进行了比较.对比结果表明:大多数测站的矿化度和总硬度均有一定程度的增大,水化学类型个别站点有所改变,显示水质变差.

Investigation and Research on Hydrochemistry Characteristic of China Northwest Rivers

River hydrochemistry change may reflect human influence on water environment in a certain degree,and the grasp of river hydrochemistry characteristic and distribution rule is helpful to reasonable use and protect water resources.According to hydrochemistry monitoring material of northwest rivers in recent five years,and compared with the first northwest rivers water resources investigation appraisal result in 80's of last century,we analyzed the main rivers hydrochemistry condition,runoff degree of mineralization,total hardness and the hydrochemistry type distribution.The result show that degree of mineralization and total hardness have both increased to different extent in majority survey station,hydrochemistry type has transformed in individual station and reflecting the deteriorated water quality.