浐河流域汛期地表水水化学组成特征及其成因
Hydrochemical Characteristics of Surface Water in Flood Season,Chan River Basin
朱娅娣 1王瑞媛 1李东泽 1许志平 1孙康1
作者信息
- 1. 陕西师范大学地理科学与旅游学院,陕西 西安 710119
- 折叠
摘要
为研究浐河流域汛期地表水水化学特征及离子来源,完善区域水资源管理合理化的建议,共采集浐河流域地表水样 10份,结合空间分布图、Piper三角图、Gibbs图、离子相关分析等方法,分析了浐河流域水化学特征、空间差异特征、主要离子来源及控制因素.结果表明:①浐河流域汛期水体整体呈弱碱性,TDS均值低于同流域枯水期均值但高于全球河流均值.②优势阳离子为Ca2+和Na+,优势阴离子为HCO3-,水化学类型以Na-HCO3 为主,整体上主要离子含量呈现ES低WN高的趋势.③浐河流域主要受硅酸盐岩风化的控制作用,且存在受蒸发岩溶解影响的情况.同时,本研究也为开采和保护源头水、发展用于工业的中游水,警惕下游水发生污染事件,合理利用水资源,解决西安缺水问题等方面提供参考.
Abstract
In order to study the water chemistry characteristics and ion sources of surface water in the Chan River basin during the flood season and to add suggestions to rationalize local water resources management,a total of 10 surface water samples were collected from the Chan River basin and combined with spatial distribu-tion maps,Piper triangles,Gibbs plots and ion correlation analysis to analyze the water chemistry characteristics,spatial variation characteristics,major ion sources and controlling factors in the Chan River basin.The results show that the Chan River basin is weakly alkaline during the flood season,with mean TDS values lower than the mean values during the dry season in the same basin but higher than the global river mean values.The dominant cations are Ca2+ and Na+,the dominant anion is HCO3-,and the water chemistry type is dominated by Na-HCO3,with an overall trend of low southeast to high northwest content of the major ions.The Chan River basin is mainly controlled by the weathering of silicate rocks and is subject to the influence of evaporite dissolution.In order to address the water shortage issue in Xi'an,we must simultaneously exploit and safeguard source water,develop midstream water for industrial use,prevent pollution events in downstream water,and utilize water re-sources intelligently.
关键词
浐河流域/汛期/水化学特征/控制因素/离子来源Key words
Chan River Basin/flood season/hydrochemical characteristic/control factors/ion source引用本文复制引用
基金项目
陕西省博士后科学基金(2016BSHEDZZ27)
西安市科技局软科学项目(22RKYJ0039)
出版年
2024
国家科技期刊平台
NSTL
万方数据