干旱区生态环境知识资源中心(Arid): 奎屯河流域平原区地下水水化学特征及成因分析

Arid

	奎屯河流域平原区地下水水化学特征及成因分析
其他题名	Hydrochemical Characterization and Cause of Groundwater in Plain Area of Kuitun River Basin
	张福初; 吴彬; 高凡; 杜明亮; 徐连统
来源期刊	环境科学研究
ISSN	1001-6929
出版年	2021
卷号	34 期号:7 页码:1001-6929
中文摘要	奎屯河流域是中国西北干旱内陆地区典型的地下水高氟、高砷区,由于该地水资源匮乏,地下水是奎屯河流域农业灌溉、工业及生活供水的主要水源.识别奎屯河流域地下水水化学特征、演变规律及其形成原因对于合理开发利用与保护管理该流域地下水资源,保障流域社会经济可持续发展与生态安全具有重要意义.为评价奎屯河流域平原区地下水质量及变化趋势,于20172019年采集地下水样品316组,综合运用描述性统计、空间分析、Piper三线图、Gibbs图、离子比值法、饱和指数等方法系统分析了地下水水化学组分空间分布、水化学特征、演变规律和成因.结果表明: ①地下水化学组分在空间分布上存在较大的离散型和波动性,山前砾质平原区潜水化学类型为HCO_3·SO_4-Na·Ca型,细土平原区潜水为SO4·Cl-Na·Ca型,承压水为HCO_3-Na·Ca、 HCO_3·SO_4·Cl-Na型. ②地下水中离子主要来源于岩石溶滤与蒸发浓缩作用,其中K+、Na+主要来源于岩盐溶解,SO_4~(2-)、Cl~-主要来源于蒸发岩溶解,Mg~(2+)和Ca~(2+)部分来源于蒸发岩溶解,部分来源于硅酸盐和碳酸盐溶解. CaCO_3及CaMg(CO_3)_2在细土平原区潜水中呈饱和状态,在承压水及砾质平原区潜水中未饱和,而CaSO_4在地下水中均未达饱和. ③研究区地下水均发生了不同程度的阳离子交替吸附作用,作用的强弱程度表现为细土平原区承压水>细土平原区潜水>砾质平原区潜水.研究显示,研究区由南向北离子浓度逐渐增大,蒸发岩溶解为离子的主要来源.
英文摘要	The Kuitun River Basin is a typical area with high fluoride and arsenic in groundwater in the arid inland areas of northwest China. Due to the shortage of water resources in this area,groundwater is the main water source of agricultural irrigation,industrial and domestic water supply in the Kuitun River Basin. It is of great significance to identify the hydrochemical characteristics,evolvement rules, and formation reasons of groundwater in the Kuitun River Basin for rational exploitation,utilization,protection and management of the groundwater resources in this basin,and to ensure the sustainable development of society and economy as well as ecological security of the basin. In order to assess the groundwater quality and the variation trend in the plain area of the Kuitun River Basin,316 sets of groundwater samples were collected from 2017 to 2019. Descriptive statistical analysis,spatial analysis,Piper plots,Gibbs plots,ion ratios method,saturation index method,etc.,were used to analyze the spatial distribution,hydrochemical characteristics,evolvement law and the cause of the groundwater chemistry. The results showed that: (1) The hydrochemical composition of the groundwater has great dispersion and fluctuation in spatial distribution. The chemical type of phreatic water in the pebbly plain area is HCO_3·SO_4-Na·Ca. The type of phreatic water in the fine soil plain area is SO4·Cl-Na·Ca,and the type of confined water is HCO_3-Na·Ca,HCO_3·SO_4·Cl-Na. (2) The chemical ions in groundwater mainly come from rock leaching,evaporation,and concentration. Among them,K~+ and Na~+ were mainly derived from rock salt dissolution,SO_4~(2-) and Cl~- were mainly derived from evaporation and dissolution,and Mg~(2+) and Ca~(2+) were partly derived from evaporation and dissolution and partly derived from dissolution of silicate and carbonate. CaCO_3 and CaMg(CO_3)_2 were saturated in phreatic water in fine soil plain area and unsaturated in confined water in gravel plain area. However,CaSO_4 was unsaturated in both phreatic water and confined. (3) Cationic alternative adsorption occurred in groundwater at different levels in the study area,in order from the strong to the weak: confined water in fine soil plain area > phreatic water in fine soil plain area > phreatic water in gravel plain area. The study shows that the ion concentration in the study area increases gradually from south to north,and evaporation and rock dissolution are the main sources of ions.
中文关键词	平原区 ; 地下水 ; 水化学特征 ; 成因分析
英文关键词	plain area groundwater hydrochemical characteristics cause analysis
类型	Article
语种	中文
国家	中国
收录类别	CSCD
WOS类目	Environmental Sciences & Ecology
CSCD记录号	CSCD:7015905
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/365131
作者单位	张福初, 新疆农业大学水利与土木工程学院, 乌鲁木齐, 新疆 830052, 中国.; 吴彬, 新疆农业大学水利与土木工程学院, 乌鲁木齐, 新疆 830052, 中国.; 高凡, 新疆农业大学水利与土木工程学院, 乌鲁木齐, 新疆 830052, 中国.; 杜明亮, 新疆农业大学水利与土木工程学院, 乌鲁木齐, 新疆 830052, 中国.; 徐连统, 新疆农业大学水利与土木工程学院, 乌鲁木齐, 新疆 830052, 中国.
推荐引用方式 GB/T 7714	张福初,吴彬,高凡,等. 奎屯河流域平原区地下水水化学特征及成因分析[J],2021,34(7):1001-6929.
APA	张福初,吴彬,高凡,杜明亮,&徐连统.(2021).奎屯河流域平原区地下水水化学特征及成因分析.环境科学研究,34(7),1001-6929.
MLA	张福初,et al."奎屯河流域平原区地下水水化学特征及成因分析".环境科学研究 34.7(2021):1001-6929.