干旱区研究2025，Vol.42Issue(7)：1211-1221,11.DOI:10.13866/j.azr.2025.07.05
阿克苏河流域蒸散量时空变化规律与驱动因素
Patterns of spatial and temporal variation of evapotranspiration in Aksu River Basin and factors driving them
摘要
Abstract
Evapotranspiration,as a crucial component of the water cycle,is vital for regulating water resources and protecting the environment,especially in arid regions where it plays a significant role in water consumption and redistribution.This study focused on Aksu River Basin and used MOD16 evapotranspiration product data from 2001 to 2022 to systematically analyze the patterns of spatial and temporal variation of actual evapotranspi-ration(AET)and potential evapotranspiration(PET),along with an exploration of the factors influencing them.The findings provide a scientific basis for managing regional water resources and protecting the environment.The results indicate the following:(1)The MOD16 product data are consistent with ET0 data(R2=0.8133),and the product accuracy meets the requirements for studying the spatial and temporal distribution of evapotranspiration in Aksu River Basin.(2)The multi-year average AET and PET are 168.36 mm and 1569.03 mm,respectively.AET shows an overall increasing trend,while PET exhibits a decreasing one.There are significant differences in the spatial distribution of AET and PET,with the opposite trends being exhibited.(3)Over the last 22 years,AET in Aksu River Basin has significantly increased,mainly in cultivated land,forestland,and oases,while PET has decreased overall but increased near the edges of oases and along river channels.AET is less stable than PET,and the Hurst indices of both indicate that the trends may change in future,with 56%of the area showing anti-persis-tence for AET and 89%for PET.(4)Changes in AET and PET are intrinsically linked to changes in climatic fac-tors,with wind speed and relative humidity being the main factors influencing regional variations in these two variables.This study provides an important scientific reference for managing and using water resources in arid re-gions.关键词
蒸散量/水循环/时空变化/水资源管理/阿克苏河流域Key words
evapotranspiration/water cycle/spatial and temporal variation/water resource management/Aksu River Basin引用本文复制引用
杨琛,马斌,何学敏,郝哲,马玉..阿克苏河流域蒸散量时空变化规律与驱动因素[J].干旱区研究,2025,42(7):1211-1221,11.基金项目
工程技术创新平台建设运行项目(WZD-XM-KJ-2023-0125) （WZD-XM-KJ-2023-0125）
中国地质调查局项目(DD20220887) （DD20220887）
自然资源部自然资源要素耦合过程与效应重点实验室开放课题(2022KFKTC010) （2022KFKTC010）
自治区高校基本科研业务费项目(XJEDU2022J001) （XJEDU2022J001）
