探地雷达测量土壤水方法及其尺度特征

发布时间：2018-05-17 11:15

本文选题：探地雷达 + 土壤水　；参考：《南水北调与水利科技》2017年02期

【摘要】：土壤水的多尺度观测与模拟是当前国内外研究的热点问题。探地雷达作为一种测量土壤含水量的现代先进技术,填补了传统测量方法与遥感方法之间的尺度缺口,国内外大量研究表明:应用探地雷达测量土壤含水量的精度较高,测量速度快,无需破坏土壤结构,作为一种田间尺度的测量方法在测量中、小尺度土壤水空间分布特征等方面具有独特优势,通过不同频率的选定能够测量深度为0.05~50m的土壤含水量。对探地雷达测量土壤水的主要方法、原理、精度及优缺点等进行详尽介绍,并讨论探地雷达的测量深度和尺度特征等问题。探地雷达在遥感反演土壤水模型率定与精度验证方面比TDR、烘干法更有优势,有潜力应用于遥感产品验证、土壤水模式时间稳定性分析等其他水文相关应用中,为相关研究和探地雷达测量土壤水方法的推广提供理论参考。
[Abstract]:Multi-scale observation and simulation of soil water is a hot issue at home and abroad. Ground penetrating radar (GPR), as a modern and advanced technique for measuring soil moisture content, fills the gap between traditional measurement methods and remote sensing methods. A large number of studies at home and abroad show that the accuracy of GPR in measuring soil moisture content is high. As a kind of measurement method in field scale, the spatial distribution characteristics of small scale soil water have unique advantages, such as fast measurement speed, no need to destroy soil structure, and so on. The soil moisture content with a depth of 0.05 ~ 50m can be measured by the selection of different frequencies. The main methods, principles, accuracy, advantages and disadvantages of ground penetrating radar (GPR) for soil water measurement are introduced in detail, and the measurement depth and scale characteristics of GPR are discussed. GPR has more advantages than TDR and drying methods in determining the rate and accuracy of soil water model in remote sensing inversion, and has the potential to be used in other hydrological applications such as remote sensing product verification, soil water model time stability analysis and so on. It provides a theoretical reference for the related research and the popularization of GPR method for soil water measurement.
【作者单位】：中国水利水电科学研究院;水利部防洪抗旱减灾工程技术研究中心;山东省菏泽市牡丹区刘庄引黄灌区管理处;
【基金】：国家自然科学基金(51609259) 国家重点研发计划(2016YFC0400106-2) 中国水利水电科学研究院专项(JZ0145B472016)~~
【分类号】：S152.7

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