摘要
在综合分析咸阳平原区地下水流场、地下水环境状况的基础上,将研究区划分为冲积平原区、冲洪积平原区以及黄土台塬区三个水环境单元,利用潜水水化学分析数据,采用迭代标准差法、Grubbs准则剔除异常值,Shapiro-Wilk检验、偏度和峰度检验进行正态检验,得到了不同分区内地下水环境背景值,并分析了潜水主要组分背景值空间分布特征及形成机制。结果表明:不同环境单元潜水Cl^-、SO4^2-、NO3^-、TDS、总硬度、F^-等含量背景值的空间分异特征明显,其形成主要受地下水补给、径流、排泄和沉积环境控制。研究结果可为咸阳平原区地下水污染评价和水资源开发利用提供科学依据。
Based on the comprehensive analysis of the groundwater flow field and groundwater environment in Xianyang plain area, the study area was divided into three water environment units. They were named alluvial plain area, alluvial and diluvial plain area and loess tableland area. Iterative standard deviation method, Grubbs criterion, Shapiro-Wilk test, skewness and kurtosis test were adopted. Based on the analysis data of 124 groups of chemical samples in the study area, the background values of groundwater environment were obtained in different units, and the spatial distribution rules and formation factors were analyzed. The results indicated that the environmental background values of the contents of Cl^-, SO4^2-, NO3^-, TDS, F^- TDS and total hardness of different units were significantly different in space. It was closely related to groundwater recharge, runoff, discharge and sedimentary environment process.The results obtained provide scientific reference for the evaluation of groundwater contamination and the future development and protection of water resources.
作者
张航泊
宋亚娅
王友林
银若冰
ZHANG Hangbo;SONG Yaya;WANG Youlin;YIN Ruobing(Shaanxi Center of Hydrogeological,Engineering and Environment Geological Survey,Xi’an 710016,China;Shaanxi Engineering Research Center of Urban Geology and Underground Space,Xi’an 710016,China)
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2020年第4期128-134,共7页
Journal of Arid Land Resources and Environment
基金
陕西省公益性地质调查基金(编号:20160302,20180303)资助。
