邯郸东部平原多水源氢氧同位素时空变化特征  

Spatial and Temporal Variations of Hydrogen and Oxygen Isotopes in Multiple Water Sources of Handan Eastern Plain

作　　者：郭雁辉 刘飞[1,2] 甄品娜[1,2] 郭晓帅 柴宏利 刘聪丽 GUO Yanhui;LIU Fei;ZHEN Pinna;GUO Xiaoshuai;CHAI Hongli;LIU Congli(School of Water Conservancy and Hydroelectric Power,Hebei University of Engineering,Handan Hebei 056038,China;Hebei Key Laboratory of Intelligent Water Conservancy,Hebei University of Engineering,Handan Hebei 056038,China)

机构地区：[1]河北工程大学水利水电学院,河北邯郸056038 [2]河北工程大学河北省智慧水利重点实验室,河北邯郸056038

出　　处：《地球与环境》2025年第1期112-122,共11页Earth and Environment

基　　金：河北省优秀青年科学基金项目(D2022402013)。

摘　　要：在跨流域调水和地下水超采治理的综合作用下,华北平原的水循环过程趋于复杂化,而氢氧同位素示踪技术正是厘清多水源供水地区复杂水循环过程的有效方法。本研究以邯郸东部平原为研究对象,通过收集45组降水、28组地表水和182组地下水样品的氢氧同位素数据,结合统计分析和端元混合模型等方法,分析了不同水体的氢氧稳定同位素时空变化特征,探讨了多水源的相互转化关系。结果表明:(1)建立了当地大气降水线(LMWL:δD=6δ^(18)O–4,R^(2)=0.83),降水同位素组成在3—6月主要受降水量效应影响,6—10月则主要受温度效应控制;(2)时间上,河水和浅层地下水同位素组成均表现出“旱季富集、雨季贫化”的特点。空间上,滏阳河、漳河和卫河氢氧同位素组成相比引黄水(东风渠、老漳河)明显富集;浅层地下水在西部和东北部同位素最为富集,可能与该区域较浅的水位埋深导致的蒸发作用密切相关;深层承压水同位素呈现“西部富集、东部贫化”的特点,可能与西部山区地下水的侧向补给有关;(3)旱季本地河流基本表现为“降水和浅层地下水共同补给河水”的规律,其中降水对河水的贡献率介于26%~46%,浅层地下水对河水贡献率介于54%~74%。雨季本地河流补排关系基本保持不变,但降水补给比例明显增加(约20%~50%)。外调水在旱季、雨季均表现为失水型河流,约32%~69%的河水补给浅层地下水。研究结果有助于加强对华北平原跨流域调水和超采治理共同作用下水循环过程的认识。With the combined effect of inter-basin water transfer and groundwater over-exploitation control,the water cycle processes in the North China Plain(NCP)have become increasingly complicated.The hydrogen and oxygen isotope tracing technique is an effective method to elucidate the intricate processes of water cycle in regions with multiple water sources.In this study,45 rainfall samples,28 surface water samples,and 182 groundwater samples from the eastern plain of Handan were collected.The spatial and temporal variations of hydrogen and oxygen isotopes in various water sources and their interactions were analyzed by using statistical analysis and end-member mixing models.The main results included that:(1)the local meteoric water line(LMWL:δD=6δ^(18)O–4(R^(2)=0.83))was established.The isotopic compositions in precipitation from March to June was mainly controlled by rainfall effect,while the isotopic variations of precipitation from June to October was affected by temperature effect.(2)The isotopic compositions in river water and shallow groundwater exhibited the characteristics of″enrichment in the dry season and depletion in the wet season.″Spatially,the hydrogen and oxygen isotopic compositions in the Fuyang River,Zhanghe River,and Wei River were significantly more enriched relative to the diverted Yellow River(Dongfeng Canal,Laozhanghe River).Shallow groundwater showed the most enrichment in the western and northeastern regions,likely due to evaporation effects associated with shallower water levels in these areas.The isotopes of deep confined water showed the pattern of″enrichment in the west and depletion in the east,″possibly related to lateral recharge of groundwater from the western mountainous areas.(3)In the dry season,local rivers generally followed the pattern of″precipitation(26%–46%)and shallow groundwater(54%–74%)jointly recharging river water.″In the rainy season,the recharge and discharge relationship of local rivers largely remained unchanged,but the contribution of precipitatio

关 键 词：邯郸东部平原 氢氧同位素 跨流域调水 混合比例 水循环 

分 类 号：X143[环境科学与工程—环境科学]