| 济南泉域岩溶水水化学特征及其成因 |
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| 引用本文： | 王珺瑜,王家乐,靳孟贵.济南泉域岩溶水水化学特征及其成因[J].地球科学,2017,42(5):821-831. |
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| 作者姓名： | 王珺瑜 王家乐 靳孟贵 |
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| 作者单位： | 1.中国地质大学盆地水文过程与湿地生态恢复学术创新基地，湖北 武汉 430074 |
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| 基金项目： | 国家自然科学基金项目41672246 |
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| 摘 要： | 济南泉域水质逐年变差，查明其污染来源和影响因素，对岩溶水资源开发利用及生态环境保护具有十分重要的意义，而对包含补给径流区的全区岩溶水系统分析尚未见报道.综合运用水化学(Piper三线图、离子比例系数、相关分析)和多元统计(因子分析、聚类分析)方法分析地下水水化学特征，探讨了不同区域水质影响因素及影响强度.因子分析反映了灰岩水岩作用、工业和生活污染、白云岩水岩作用、农牧业和生活污染对水化学组分的影响，贡献率依次为33.1%、28.4%、12.0%和11.8%.分析结果表明:研究区岩溶水水质受水岩作用和人类活动的双重影响；南部补给区、西郊及其以西排泄区水质优良，主要受碳酸盐岩溶解的影响；直接补给径流区部分岩溶水受农牧业和农村生活污染的影响，NO3-含量较高；东郊排泄区、城区及近郊开采区受工业及城镇生活污染的影响，水质较差，少数地段SO42-、NO3-、TDS和总硬度超标.
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| 关 键 词： | 济南泉域 岩溶水 水化学 多元统计 聚类分析 成因 水文地质 |
| 收稿时间： | 2016-12-27 |
Hydrochemical Characteristics and Formation Causes of Karst Water in Jinan Spring Catchment |
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| Abstract: | Water quality of Jinan spring catchment is getting worse year by year. It is of great significance to find out the pollution sources and influence factors for exploitation of the karst water and ecological environment protection. However, analysis of the whole karst water system including the recharge and runoff area has not been reported yet. Hydrochemical method (piper diagram, ion ratio, correlation analysis) and multivariate statistical method (factor analysis and cluster analysis) were comprehensively used to analyze the hydrochemical characteristics of groundwater, as well as the factors affecting water quality and relevant impact strength in different areas in this study. Factor analysis indicates the effects of water-rock interaction between limestone and groundwater, industrial and domestic pollution, water-rock interaction between dolomite and groundwater, and agriculture, husbandry and domestic pollution. Their contribution rates to groundwater quality are 33.1%, 28.4%, 12.0%, and 11.8%, respectively. Combined with hydrochemical and cluster analyses, the results indicate that groundwater quality in the study area is controlled by both water-rock interaction and anthropogenic activities. Groundwater with high quality in the southern recharge area and western discharge area is mainly affected by the dissolution of carbonate minerals. Some parts of the recharge-runoff area are influenced by agriculture, husbandry and rural domestic pollution with higher content of nitrate in the groundwater. Industrial and urban domestic pollution severely impacts the eastern suburb, urban and suburban exploitation area with poor groundwater quality and excessive levels of SO42-, NO3-, TDS and total hardness in a few sections. |
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