潇河灌区地表水无机化学特征及离子来源解析  

Hydro-chemical characteristics and ion source analysis of surface water in the Xiaohe irrigation area

作　　者：刘婷 孟志龙 唐秀丽 王捷 高玉凤 LIU Ting;MENG Zhilong;TANG Xiuli;WANG Jie;GAO Yufeng(College of Biological Science and Technology,Taiyuan Normal University,Jinzhong 030619,China;Institute of Soil and Water Conservation,Shanxi Agricultural University,Taiyuan 030013,China)

机构地区：[1]太原师范学院生物科学与技术学院,山西晋中030619 [2]山西农业大学水土保持科学研究所,太原030013

出　　处：《农业环境科学学报》2024年第1期152-161,共10页Journal of Agro-Environment Science

基　　金：山西省基础研究计划青年科学研究项目(202103021223325)。

摘　　要：为研究潇河灌区无机水化学特征及其控制因素,本研究于2021年10月至2022年8月对潇河灌区地表水进行采样分析,综合运用相关性分析、数理统计和离子比值等方法,分析研究区地表水化学类型及离子来源特征。结果表明:研究区水化学类型主要为HCO_(3)_(-)Na·Mg·Ca型,优势离子为Mg^(2+)和HCO_(3)_(-),分别占阳离子和阴离子的35.41%和68.49%。地表水体受岩石风化影响显著,离子含量的时间变化特征显著,2月和6月总溶解性固体含量最高。Ca^(2+)、Mg^(2+)和K^(+)来源于硅酸岩风化,HCO_(3)_(-)来源于碳酸岩风化,Cl^(-)、SO_(4)^(2-)和NO_(3)^(-)主要受人类活动影响。To study the chemical characteristics and control factors of surface water in the Xiaohe irrigation area,this study sampled and analyzed the surface water from October 2021 to August 2022,and combined correlation analysis,mathematical statistics,ion ratio,and other methods to analyze the hydro-chemical types and characteristics of ion sources in the study area.The results showed that HCO_(3)^(-)Na·Mg·Ca was the main hydro-chemical type,and the dominant ions were Mg^(2+)and HCO_(3)^(-),accounting for 35.41%and 68.49%of cations and anions,respectively.The surface water was significantly affected by rock weathering,and the spatio-temporal variation of ion content was significant.Total dissolved solids content reached its highest value in February and June.Ca^(2+),Mg^(2+),and K^(+)were derived from silicate weathering,HCO_(3)^(-)was derived from the carbonatite weathering,and the sources of Cl-,SO_(4)^(2-),and NO_(3)^(-)were mainly affected by human activities.Thus,this study can provide a theoretical reference for water resource management and ecological restoration in agriculturally irrigated areas.

关 键 词：潇河灌区 地表水 水化学特征 因子分析 来源解析 

分 类 号：X52[环境科学与工程—环境工程]