| 珠江三角洲浅层地下水pH值的分布及成因浅析 |
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| 引用本文： | 张玉玺,孙继朝,陈玺,黄冠星,荆继红,刘景涛,向小平,王金翠,支兵发. 珠江三角洲浅层地下水pH值的分布及成因浅析[J]. 水文地质工程地质, 2011, 38(1): 16-21 |
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| 作者姓名： | 张玉玺 孙继朝 陈玺 黄冠星 荆继红 刘景涛 向小平 王金翠 支兵发 |
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| 作者单位： | 中国地质科学院水文地质环境地质研究所;广东省地质调查院; |
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| 摘 要： | 通过珠江三角洲地区两千余组地下水样的pH值现场测试,发现水体酸化是该区地下水环境最为突出的问题之一。偏酸性地下水的分布范围占全区76.3%。该区地下水pH值的分布具有明显的区域性特征。丘陵台地区以偏酸性地下水为主,pH值集中在5.6～6.4;三角洲平原区地下水普遍呈中性,pH值主要介于6.4～7.2。丰、枯水期地下水pH值变幅不大,受酸雨影响,丰水期略有降低。该地区影响地下水pH值的主要因素为酸雨、包气带介质、河流及海水潮汐。丘陵区酸雨入渗强度大、包气带的缓冲能力低,对地下水pH值偏低起了主要作用;平原区粘土层厚,酸雨入渗强度减弱,而河流与地下水交换频繁,加上咸潮与海水入侵的影响,共同导致了地下水pH值升高。
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| 关 键 词： | 珠江三角洲 浅层地下水 pH值 |
Characteristics and preliminary analyses of the formation of pH in shallow groundwater in the Pearl River delta |
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| ZHANG Yu-xi,SUN Ji-chao,CHEN Xi,HUANG Guan-xing,JING Ji-hong,LIU Jing-tao,XIANG Xiao-ping,WANG Jin-cui,ZHI Bing-fa. Characteristics and preliminary analyses of the formation of pH in shallow groundwater in the Pearl River delta[J]. Hydrogeology and Engineering Geology, 2011, 38(1): 16-21 |
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| Authors: | ZHANG Yu-xi SUN Ji-chao CHEN Xi HUANG Guan-xing JING Ji-hong LIU Jing-tao XIANG Xiao-ping WANG Jin-cui ZHI Bing-fa |
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| Affiliation: | 1.Institute of Hydrogeology and Environmental Geology,CAGS,Shijiazhuang 050061,China;2.Guangdong Geological Survey,Guangzhou 510080,China |
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| Abstract: | More than 2,000 groundwater samples were detected in situ for pH in the Pearl River Delta.The results show that water acidification is the most prominent problem in the groundwater environment.Acidic groundwater accounts for 76.3% of the total area.Distribution of pH in the shallow groundwater is of obvious regional characteristics.In the hilly areas,pH in groundwater ranges mostly from 5.6 to 6.4,while pH varies mainly between 6.4 and 7.2 in the plain regions.Due to the influence of acid rain,p... |
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