基于遥感数据的灌区蒸散发反演及灌溉水利用效率研究  

Research on evapotranspiration inversion and irrigation water use efficiency in irrigation areas based on remote sensing data

作　　者：王建斌 Wang Jianbing(Gansu Branch of Hohai University Design and Research Institute Co.,Ltd.,Lanzhou 730010,China)

机构地区：[1]河海大学设计研究院有限公司甘肃分公司,甘肃兰州730010

出　　处：《吉林水利》2025年第2期30-34,共5页Jilin Water Resources

摘　　要：为了提升农业水资源的利用效率,准确计算灌溉水利用效率至关重要。正确评估与提高灌溉水利用效率,不仅有助于深入了解灌区的用水情况及存在的问题,还对推动水资源的合理配置具有重要意义。本研究以古浪灌区为例,通过2022年的MODIS影像、气象数据及气象站观测资料,采用SEBS模型估算区域蒸散发量,并利用水量平衡模型计算灌溉水利用效率。研究结果表明,该地区灌溉水利用效率为0.491,与传统计算方式得出的结果0.415接近,说明基于遥感数据的反演蒸发可用于计算灌区灌溉水利用效率,为灌溉水利用效率提供了有效的快速评估方法。In order to improve the utilization efficiency of agricultural water resources,it is crucial to accurately calculate the efficiency of irrigation water utilization.Correctly evaluating and improving the efficiency of irrigation water utilization not only helps to gain a deeper understanding of the water use situation and existing problems in irrigation areas,but also has important significance for promoting the rational allocation of water resources.This study takes Gulang irrigation area as an example,uses MODIS images,meteorological data and meteorological station observation data in 2022,adopts the SEBS model to estimate regional evapotranspiration,and calculates the irrigation water utilization efficiency through the water balance model.The results show that the irrigation water utilization efficiency in the area is 0.491,which is close to the efficiency of 0.415 obtained by traditional calculation methods,indicating that evaporation inversion through remote sensing data can be used to calculate the irrigation water utilization efficiency of irrigation areas,providing an effective and rapid evaluation method.

关 键 词：灌溉水利用效率 遥感 水量平衡 

分 类 号：S274[农业科学—农业水土工程]