若尔盖湿地各类水体的水化学与同位素特征及其补给关系分析  

Hydrochemistry and Isotopic Characteristics of Various Types of Water Bodies in Ruoergai Wetland and their Water Recharge Relationship

作　　者：吴正江 孙荣卿 张文耀 张昆 董李勤[1,2,4] WU Zhengjiang;SUN Rongqing;ZHANG Wenyao;ZHANG Kun;DONG Liqin(School of Geography and Ecotourism,Southwest Forestry University,Kunming 650224,Yunnan,P.R.China;Yunnan Key Laboratory of Plateau Wetland Conservation,Restoration and Ecological Services,Kunming 650224,Yunnan,P.R.China;National Plateau Wetlands Research Center,Kunming 650224,Yunnan,P.R.China;Southwest Research Center for Eco-civilization,National Forestry and Grassland Administration,Kunming 650224,Yunnan,P.R.China)

机构地区：[1]西南林业大学地理与生态旅游学院,云南昆明650224 [2]云南省高原湿地保护修复与生态服务重点实验室,云南昆明650224 [3]西南林业大学湿地学院,国家高原湿地研究中心,云南昆明650224 [4]国家林业和草原局西南生态文明研究中心,云南昆明650224

出　　处：《湿地科学》2024年第3期418-427,共10页Wetland Science

基　　金：国家自然科学基金项目(42261009);云南省高原湿地保护修复与生态服务重点实验室开放基金项目(202105AG070002);云南省科技厅基础研究专项面上项目(202001AT070132)资助。

摘　　要：为了探究若尔盖湿地的水环境特征及水体补给关系,于2019年、2020年和2021年夏季,采集大气降水、黑河干支流河水、沼泽水和地下水样品,分析不同水体水化学及氢氧稳定同位素特征,并利用端元混合模型,估算不同水体间的补给比例。研究结果表明,大气降水是各水体的最初补给源,黑河干流中下游和西北部地下水受大气降水影响较大;黑河干流中上游受南部沼泽、南部黑河支流和降水的补给比例分别为68.52%、22.76%和8.72%;北部出湖的黑河支流受北部沼泽和降水的补给比例分别为62.88%和37.12%;东南部地下水受北部入湖黑河支流和黑河干流中上游的补给比例分别为67.88%和32.12%,西北部地下水受黑河干流中下游和南部沼泽的补给比例分别为88.59%和11.41%。In order to explore the water environment characteristics and water recharge relationship of the Ruoergai Wetland,Heihe River water,marsh water and groundwater samples were collected in the summer of2019,2020 and 2021.The water chemistry and stable hydrogen and oxygen isotope characteristics of different water bodies were analyzed,and the recharge ratio between different water bodies was estimated using the endmember mixture model.The results showed that atmospheric precipitation was the initial recharge source of all kinds of water,and the groundwater in the middle and lower reaches of the Heihe River trunk stream and the northwest was greatly affected by precipitation.The recharge ratio of the middle and upper reaches of the Heihe River trunk stream from the southern marsh,the southern Heihe River tributary and precipitation was 68.52%,22.76%and 8.72%,respectively.The northern outlet Heihe River tributary recharged by northern marsh and precipitation was 62.88%and 37.12%.The main source of groundwater recharge in the southeast comes from the northern Heihe River tributary leading into the lake and the middle and upper reaches of the mainstream,ac-counting for 67.88%and 32.12%,respectively.In the northwest,groundwater recharge was88.59%and 11.41%in the middle and lower reaches of the mainstream and southern marsh,respectively.

关 键 词：降水 河水 沼泽水 地下水 若尔盖湿地 水化学 氢氧稳定同位素 

分 类 号：X522[环境科学与工程—环境工程]