河南平原浅层地下水总溶解固体和水化学类型的分布特征

摘要

利用75件地下水样品的水化学数据(丰水期38件,枯水期37件)分析了丰、枯水期河南平原第四系浅层地下水总溶解固体(TDS)和水化学类型的分布特征.结果表明:河南平原浅层地下水淡水(TDS<1g/L)发育.枯水期TDS>1g/L的地下水主要分布在新乡-开封-太康县一线以东地区、项城以及太行山东麓安阳市境内;丰水期TDS>1g/L的地下水分布在新乡以东的部分地区、兰考县城东镇以及太康县以东地区.枯水期地下水主要以HCO3型水为主,丰水期河南平原的北部、南部主要以HCO3型水为主,而中部主要以HCO3-SO4型水为主.丰、枯水期地下水水化学特征的差异是在气候(降水、蒸发)及人类活动等因素的影响下形成的.%The distribution characteristics of TDS and hydrochemical types of shallow groundwater in the Henan Plain have been studied on the basis of analyzing 75 hydrochemical samples (38 samples in wet seasons and 37 samples in dry seasons). The results show that fresh water (TDS＜ 1 g/L) is rather rich in the Henan Plain. In dry seasons, the groundwater of TDS＞ 1 g/l mainly distributes in the east of Xinxiang -KaifengLuohe belt and Anyang City. The hydrochemical type is mainly HCO3. In wet seasons, the groundwater of TDS＞1g/l mainly distributes in the east of Xinxiang, Lankao and Taikang. The main hydrochemical type is HCO3 in both the south and north of Henan Plain, with the central south of HCO3-SO4. The distributions there are the great differences in distribution characteristic between the dry season and wet season due to the climate (precipitation, evaporation, etc.) and human activities.