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基于水化学和稳定同位素的白洋淀流域地表水和地下水硝酸盐来源
摘要点击 177  全文点击 112  投稿时间:2017-09-17  修订日期:2017-12-05
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中文关键词  硝酸盐  同位素  生活污水  府河  雄安新区  白洋淀
英文关键词  nitrate  isotopic  domestic sewage  Fuhe River  Xiong'an New Area  Baiyangdian Lake
作者单位E-mail
孔晓乐 中国科学院遗传与发育生物学研究所农业资源研究中心, 中国科学院农业水资源重点实验室, 河北省节水农业重点实验室, 石家庄 050021
中国科学院大学, 北京 100049 
xlkong@sjziam.ac.cn 
王仕琴 中国科学院遗传与发育生物学研究所农业资源研究中心, 中国科学院农业水资源重点实验室, 河北省节水农业重点实验室, 石家庄 050021 sqwang@sjziam.ac.cn 
丁飞 北京工业大学建筑工程学院, 北京 100124  
梁慧雅 中国科学院遗传与发育生物学研究所农业资源研究中心, 中国科学院农业水资源重点实验室, 河北省节水农业重点实验室, 石家庄 050021
中国科学院大学, 北京 100049 
 
中文摘要
      为探究白洋淀流域生活污水河附近地表水和地下水硝酸盐来源,于2014年7月沿着生活污水纳污河——府河采集地表水和地下水.通过分析水化学和氢氧同位素(δ2 H、δ18O)明确地表水和地下水转化关系,并通过硝酸盐氮(δ15 N)同位素确定硝酸盐来源.结果表明,河水来源于城市和农村生活污水,同时受蒸发作用影响.浅层地下水受府河、白洋淀和太行山山区地下水侧向补给.浅层地下水硝酸盐超标(世界卫生组织)率为16.7%.受水体自净能力的影响,府河上游硝酸盐浓度大于下游.受区域水流方向的影响,南岸浅层地下水硝酸盐浓度大于北岸.近河和近淀区域浅层地下水硝酸盐主要来自于地表水.此外,土壤、化肥及其点源污染也是地下水硝酸盐的主要来源.城市和乡村居民生活及农业生产活动影响区域地表水和地下水硝酸盐.
英文摘要
      In order to study the source of nitrate in surface water and groundwater near a domestic sewage discharge river in the Baiyangdian watershed, including the Fuhe River and Baiyangdian Lake, shallow groundwater and deep groundwater samples were collected in July 2014.Water chemistry and stable isotopes (δ2 H and δ18O) were used to study the relationship between the surface water and groundwater. δ15 N was used to explore the source of nitrate. The results show that urban and rural domestic sewage discharge to Fuhe River and then experience evaporation. Shallow groundwater is affected by the Fuhe River, Baiyangdian Lake, and lateral recharge from groundwater in the Taihang Mountain area. There are 16.7% of shallow groundwater samples exceeds the NO3- threshold for drinking water according to the World Health Organization standard. Due to the effect of self-purification capacity, the NO3- mass concentration in the Fuhe River is higher in the upstream area than in the downstream area. Due the regional water flow from northwest to southeast, the NO3- mass concentration in the shallow groundwater is higher in the south bank area than in north bank area. The shallow groundwater near the Fuhe River and Baiyangdian Lake is recharged by surface water. In addition, soil, fertilizer, and point sources are also major sources for groundwater nitrate. Urban and rural residential living and agricultural production activities are the main reasons for surface water and groundwater nitrate.

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