山东半岛日照地区环境同位素特征研究

Characteristics of environmental isotopes in Rizhao region of Shandong Peninsula

分析2013年3月枯水期和10月丰水期分别在荻水村、东南河村、付疃河下游所取地表水与地下水样的D、^(18)O、^(14)C同位素分析数据,揭示地表水及地下水与大气降水的补给关系。D、^(18)O分析结果显示:大气降水是地表水和地下水的最初来源,枯水期还接受冰雪融水补给;水源混合作用是水体同位素组成发生改变的主要因素。^(14)C分析结果显示:地下水和地表水仅在付疃河南岸年龄较大,且和地表水的年龄差别较大,说明傅疃河南岸地下水主要为来自上游的径流补给,补给路径较长。其它地区地表水和地下水年龄均小于200 a,表明多为现代降水补给,且循环快速。

Analyze the D,18O,and 14C isotopic analysis data of surface water and groundwater taken from the lower dry season and the wet period in March 2013 in the downstream of the Qinshui,Southeast,and Fufu Rivers to reveal surface water,groundwater,and atmospheric precipitation. Supply relationship. The results of D and 18O analysis show that atmospheric precipitation is the initial source of surface water and groundwater,and it is also recharged by melting of ice and snow in the dry season; the mixing effect of water sources is the main factor that changes the isotope composition of water bodies. The results of ^（14）C analysis show that groundwater and surface water are only older on the south bank of the Fuyu River,and the age difference between the surface water and the groundwater is larger. This indicates that the groundwater in the south bank of the Fuyuan River is mainly runoff from the upper reaches,and the recharge route is longer. The ages of surface water and groundwater in other areas were less than 200 years,indicating that modern precipitation supplies are mostly provided and the circulation is rapid.