涡河流域河南段浅层高碘地下水分布及成因  

Distribution and genesis of high iodine shallow groundwater in Henan section of Guohe Basin

作　　者：叶永红[1,2] 龚建师 许乃政[1,2] 张飞 王赫生 李亮[1,2] 周锴锷 朱春芳[1,2] 陶小虎 檀梦皎[1,2] YE Yonghong;GONG Jianshi;XU Naizheng;ZHANG Fei;WANG Hesheng;LI Liang;ZHOU Kaie;ZHU Chunfang;TAO Xiaohu;TAN Mengjiao(Nanjing Center,China Geological Survey,Nanjing 210016,Jiangsu,China;Key Laboratory of Watershed Eco-Geological Processes,Ministry of Natural Resources,Nanjing 210016,Jiangsu,China)

机构地区：[1]中国地质调查局南京地质调查中心,江苏南京210016 [2]自然资源部流域生态地质过程重点实验室,江苏南京210016

出　　处：《华东地质》2023年第3期292-299,共8页East China Geology

基　　金：中国地质调查局“沙颍河-涡河流域水文地质调查(编号:DD20190354)”;“长江下游及淮河流域水文地质与水资源调查监测(编号:DD20221756)”项目联合资助。

摘　　要：通过分析涡河流域河南段249组浅层地下水样,发现浅层高碘地下水分布面积为5818.9 km^(2),占总面积的51.97%,主要分布于研究区北部、东北部,其次分布于太康县的东部地区。第四纪松散沉积物中的碘是浅层地下水中碘的主要来源。气候条件使得浅层地下水中的碘倾向于聚集,地形地貌控制下的地下水流场以及抽取地下水灌溉庄稼的过程,均使浅层地下水中的碘逐渐浓缩而形成浅层高碘地下水。By analyzing 249 groups of shallow groundwater samples in Henan section of Guohe Basin,it is found that the area of high iodine shallow groundwater covers 5818.9 km^(2),accounting for 51.97%of the total.It is widely distributed in the north and northeast of the study area,followed by the east of Taikang County.Iodine in the shallow groundwater of the study area is mainly sourced from the Quaternary loose sediments.The combination of climate condition,the groundwater flow field constrained by topography and the groundwater pumping for crops irrigation is the prerequisite for the gradual concentration of iodine in the shallow groundwater.

关 键 词：涡河流域 河南段 高碘地下水 浅层地下水 地下水流场 

分 类 号：P641.11[天文地球—地质矿产勘探]