地球学报
地毬學報
지구학보
ACTA GEOSCIENTIA SINICA
2015年
1期
76-83
,共8页
殷秀兰%凤蔚%王瑞久%蔡月梅%朱瑾%霍传英
慇秀蘭%鳳蔚%王瑞久%蔡月梅%硃瑾%霍傳英
은수란%봉위%왕서구%채월매%주근%곽전영
水文地球化学%环境同位素%北部平原%地下水
水文地毬化學%環境同位素%北部平原%地下水
수문지구화학%배경동위소%북부평원%지하수
hydrogeochemistry%environmental isotope%northern plain%groundwater
乌鲁木齐河流域是西北干旱地区内流盆地的典型代表,也是水文地质研究的重点区域。本次研究利用以往工作的资料,并在流域下游北部平原区采集地下水和地表水样品21组,用无机离子作为示踪剂,结合环境同位素的分析,提出乌鲁木齐河流域平原区的地表水普遍溶解有蒸发盐,与晚全新世(近4000年)以来我国西北地区气候不断变得干旱有关;并将北部平原区的地下水划分为三层不同水体:现代水(埋深21~65 m)是乌鲁木齐河河水经蒸发后入渗补给的,而下面二层水为晚全新世初期(埋深179~259 m)和晚更新世末次冰期(埋深~353 m)补给的水都是原地的降水入渗。
烏魯木齊河流域是西北榦旱地區內流盆地的典型代錶,也是水文地質研究的重點區域。本次研究利用以往工作的資料,併在流域下遊北部平原區採集地下水和地錶水樣品21組,用無機離子作為示蹤劑,結閤環境同位素的分析,提齣烏魯木齊河流域平原區的地錶水普遍溶解有蒸髮鹽,與晚全新世(近4000年)以來我國西北地區氣候不斷變得榦旱有關;併將北部平原區的地下水劃分為三層不同水體:現代水(埋深21~65 m)是烏魯木齊河河水經蒸髮後入滲補給的,而下麵二層水為晚全新世初期(埋深179~259 m)和晚更新世末次冰期(埋深~353 m)補給的水都是原地的降水入滲。
오로목제하류역시서북간한지구내류분지적전형대표,야시수문지질연구적중점구역。본차연구이용이왕공작적자료,병재류역하유북부평원구채집지하수화지표수양품21조,용무궤리자작위시종제,결합배경동위소적분석,제출오로목제하류역평원구적지표수보편용해유증발염,여만전신세(근4000년)이래아국서북지구기후불단변득간한유관;병장북부평원구적지하수화분위삼층불동수체:현대수(매심21~65 m)시오로목제하하수경증발후입삼보급적,이하면이층수위만전신세초기(매심179~259 m)화만경신세말차빙기(매심~353 m)보급적수도시원지적강수입삼。
The Urumqi River basin is one of the typical inland basins in arid northwestern China, and also the focus area of regional hydrogeological research. The soil salinization problem exists in the northern plain of the river basin. The evolution of the chemical composition of groundwater has important significance for deepening the study of soil salinization, rational utilization and protection of water resources. Hydrogeochemistry and environmental isotope in northern plain of the Urumqi River basin were analyzed according to the method of some tracers, such as the anions, cations, and environmental isotope, in combination with the geological background. The authors hold that there extensively exist dissolved evaporates of surface water in northern plain, which are related to the increasingly arid climate since Late Holocene (B.P. 4000 years). Three types of groundwater in the area were distinguished: present water (21~65 m in depth) from infiltration recharge of the Urumqi River, water of Late Holocene (179~259 m in depth) from the precipitation infiltration, and water of Late Pleistocene starting with the last glacial period (depth: ~353 m) also from the precipitation infiltration.