摘要
本文应用环境同位素（^（１４）Ｃ、^（１３）Ｃ、~３Ｈ、Ｄ及^（１８）Ｏ）对渭河白杨水源地地下水年龄、运移过程和一些水文地质参数进行了研究．研究结果表明，水源地潜水为现代水补给，氚含量较高，渭河河水对其补给量约占１／２左右；中、深层承压水补给途径较远，^（１４）Ｃ年龄分别为距今４０００～５０００年和７０００～８０００年。δＤ和δ^（１８）Ｏ值变化不大，说明主要来源于大气降水补给。
The Bat yang water source is located at the flood plain-terrace No. 1 on the south bank of the Weihe river, near the Linghe-Weihe river junction at the Baiyang village, Weinan county, and it covers an area about10km'. It is a water source region of polylaminate texture consisting of the quaternary alluvios and the lakedePOsits. It contains phreatic water, shallow and four aquifers of middle and deep confined water.Feeding water from the Weihe river makes up about of feeding phreatic water at the Baiysng watersours region. The water-bearing strata have better permeability and the water exchange is better, too. Thewaterproduction of a single well is more than 5 000 m'/d. The middle and deep confined water is buried ata deeper depth, with the feeder Channel being longer, and the age of underground water being more than 4000～8 000 years ago.
关键词
水源地
环境同位素
地下水年龄
Water source region, environmental isotope, age of groundwater
