青藏高原中部班戈错富锂盐湖水位月际变化与驱动因素分析  

Analysis of Inter-monthly Variation and Driving Factors of Water Level Fluctuation in Bankog Co,A Lithium-rich Salt Lake,Central Tibetan Plateau

作　　者：李胜群 叶传永[2,3] 赵元艺[2,3] LI Shengqun;YE Chuanyong;ZHAO Yuanyi(School of Earth Sciences and Resources,China University of Geosciences(Beijing),Beijing 100083;MNR Key Laboratory of Saline Lake Resources and Environments,Institute of Mineral Resources,Chinese Academy of Geological Sciences,Beijing 100037;MNR Salt Lake Field Observation and Research Station of Tibetan Plateau,Institute of Mineral Resources,Chinese Academy of Geological Sciences,Beijing 100037)

机构地区：[1]中国地质大学(北京)地球科学与资源学院,北京100083 [2]中国地质科学院矿产资源研究所、自然资源部盐湖资源与环境重点实验室,北京100037 [3]中国地质科学院矿产资源研究所、自然资源部青藏高原盐湖野外观测研究站,北京100037

出　　处：《地球学报》2024年第5期691-705,共15页Acta Geoscientica Sinica

基　　金：“第二次青藏高原综合科学考察研究”专题(编号:2022QZKK0201);中国地质调查局地质调查项目(编号:DD20243280);国家自然科学基金项目(编号:91962219);“浙江天铁实业股份有限公司”委托项目(编号:HE2210)联合资助。

摘　　要：锂在新能源领域的独特优势使其需求规模呈爆发式增长,世界各主要经济体将其列为关键矿产。西藏盐湖锂资源丰富,水位变化是锂资源动态评价的重要环节,班戈错是典型富锂盐湖,极具代表性。本文以2016—2023年班戈错现场实测水文及气象观测资料为基础,分析了水位月际变化特征及驱动因素。主要结论如下:(1)以2018年6月、2021年12月为界,2016年1月至2023年7月,班戈错水位月际变化剧烈,经历下降—上升—下降波动变化过程,且水位上升速度远大于水位下降速度。(2)蒸发量增大是班戈错两次水位波动下降的主要原因;而蒸发量降低和温度升高是驱动水位波动上升的动力。(3)温度及降水是控制湖泊年内变化的主导因子,且温度主要通过控制蒸发来实现影响。研究结果为青藏高原月际尺度气候变化的盐湖区域响应和班戈错将来开采过程中锂资源保障程度研究提供数据基础。Lithium’s unique advantages in the field of new energy have made its demand grow exponentially,and the world's major economies have listed it as a key mineral.Salt lakes in Tibet are rich in lithium resources,and changes in the water level play an important role in the dynamic evaluation of lithium resources.Bankog Co is a typical lithium-rich salt lake,making it highly representative.The main conclusions are as follows:(1)Between June 2018 and December 2021,and from January 2016 to July 2023,the Bankog Co water level exhibited drastic inter-monthly changes,first decreasing,then increasing,and again decreasing.The speed at which the water level increased was much higher than the speed at which it decreased.(2)An increase in evaporation was the main reason for the two-time water level decrease;a decrease in evaporation and an increase in temperature were the driving forces of rises in the water level.(3)Temperature and precipitation were the main factors controlling the annual variation of the lake,and temperature was mainly affected by controlling evaporation.The results of this study provide a database for regional response studies of climate change in the Tibetan Plateau and the late lithium mining of Bankog Co.

关 键 词：富锂盐湖 水位 月际变化 驱动因素 青藏高原 

分 类 号：P942[天文地球—自然地理学]