光学遥感在区域灌溉监测中应用的研究进展  

Research progress on application of optical remote sensing in regional irrigation monitoring

作　　者：李伟[1,2] 宋睿 刘明江 李硕 LI Wei;SONG Rui;LIU Mingjiang;LI Shuo(National Research Center of Pumps,Jiangsu University,Zhenjiang,Jiangsu 212013,China;Institute of Fluid Engineering Equipment Technology,Jiangsu University,Zhenjiang,Jiangsu 212009,China)

机构地区：[1]江苏大学国家水泵及系统工程技术研究中心,江苏镇江212013 [2]江苏大学镇江流体工程装备技术研究院,江苏镇江212009

出　　处：《排灌机械工程学报》2024年第11期1157-1165,共9页Journal of Drainage and Irrigation Machinery Engineering

基　　金：江苏省“一带一路”创新合作项目(BZ2020068);江苏省农业科技自主创新项目(CX(20)2037)。

摘　　要：农业干旱、灌溉用水效率低等问题严重制约着中国农业生产的发展.及时准确地获取田间水分信息是建立区域灌溉管理系统的前提和基础,传统的水分信息监测方法应用范围小、效率低,无法满足现代农业的需求,而遥感技术提供了一个相对高效精准的技术方法.分别介绍了作物需水量的计算方法和灌溉面积监测技术,其中作物需水量的计算介绍了土壤水分系数估算法和植被指数反演法,这2种方法都利用作物系数法对作物需水量进行计算,主要区别在于计算参数的获取方式;灌溉面积监测总结了基于光谱特征空间反演、冠层温度反演、蒸散发模型反演和植被指数反演4种方法,通过蒸散发模型和植被干旱指数反演灌溉面积是目前应用较为广泛的方法.在此基础上,构建基于田间水分信息的区域灌溉管理体系,以达到精准灌溉、科学决策的目的.Agricultural drought and low efficiency of irrigation water seriously restrict the development of agricultural production in China.Acquiring field water information timely and accurately is the precondition and foundation for establishing a regional irrigation management system.Traditional water information monitoring methods have a small application scope and low efficiency,which cannot meet the needs of modern agriculture.However,remote sensing technology provides a relatively efficient and accurate technical method.The calculation methods of crop water demand and the irrigation area monitoring technologies are introduced respectively.In the calculation part of crop water requirement,the estimation method of soil water coefficient and the inversion method of vegetation index are introduced.Both methods use crop coefficient method to calculate crop water requirement,with the main difference being the method of obtaining calculation parameters.The monitoring of irrigation area has summarized four methods based on spatial inversion of spectral characteristics,canopy temperature inversion,evaporation model inversion and vegetation index inversion.Inversion of irrigation area by evaporation model and vegetation drought index is a widely used method at present.On this basis,a regional irrigation management system based on field water information is constructed to achieve pecise irrigation and scientific decision-making.

关 键 词：遥感 精量灌溉 灌溉面积 土壤含水量 作物需水量 

分 类 号：S274.4[农业科学—农业水土工程]