干旱区地理2024，Vol.47Issue(8)：1263-1276,14.DOI:10.12118/j.issn.1000-6060.2024.166
东昆仑库木库里盆地典型湖泊水量蒸发损失估算
Estimation of evaporation loss from typical lakes in the Kumukuli Basin,East Kunlun Mountains
摘要
Abstract
Estimating lake water evaporation losses is of significant importance for addressing water scarcity in arid regions and for the protection of lake ecosystems.This study analyzed the spatiotemporal variations of actual evapotranspiration(ET)in three typical lakes within the Kumukuli Basin of East Kunlun Mountains over the past 20 years.Using empirical formulas,we estimated the evaporation losses and applied a random forest model to identify potential factors influencing changes in lake water evaporation.This study examines the spatiotemporal variation in ET of typical lakes in the Kumukuli Basin of East Kunlun Mountains using PML-V2 data,estimates water loss due to lake evaporation through empirical formulas,and explores the influencing factors of lake ET changes using a random forest model.Key findings include(1)From 2001 to 2020,the annual ET of Ayakkum Lake,Aqqikkol Lake,and Whale Lake exhibited a fluctuating trend,initially increasing,then decreasing,and sub-sequently showing a gradual increase,with peak and trough occurring in 2004 and 2012,respectively.(2)The ET of the three lakes demonstrated an inverted U-shaped pattern within the year,with Ayakkum Lake peaking in June and the other two lakes in July.Aqqikkol Lake exhibited a relatively gentle increase,while Whale Lake saw a sig-nificant rise from May to July,reaching 48.45 mm·month-1.(3)During the same period,the evaporation water volume of the three lakes increased,with Ayakkum Lake recording the highest at 10.33×108 m3·a-1,followed by Aqqikkol Lake at 4.54×108 m3·a-1,and Whale Lake at 3.33×108 m3·a-1.(4)Analysis using the random forest mod-el indicates that lake area significantly influences evaporation volume.Additional factors,including increases in wind speed,maximum temperature,and precipitation,also drive evaporation changes,contributing over 45％cu-mulatively.关键词
高山湖泊面积变化/蒸发损失水量/驱动因素/库木库里盆地/东昆仑Key words
high mountain lake area change/evaporation loss water volume/driving factors/Kumukuli Basin/East Kunlun Mountains引用本文复制引用
李稚,朱成刚,汪家友,刘永昌,王川,张雪琪,韩诗茹,方功焕..东昆仑库木库里盆地典型湖泊水量蒸发损失估算[J].干旱区地理,2024,47(8):1263-1276,14.基金项目
第三次新疆科学考察——昆仑山北坡水资源开发潜力及利用途径科学考察项目(2021xjkk0100) （2021xjkk0100）
新疆天山英才青年科技拔尖项目(2022TSYCCX0042)资助 （2022TSYCCX0042）
