基于探地雷达的土壤水分测定方法研究进展

Research progress on soil moisture measurement via ground-penetrating radar

农田和小流域尺度土壤水分空间和时间分布信息的快速、准确、无损获取是土壤学、农学以及生态环境学等相关科学研究的重要需求。探地雷达作为一种新型地球物理技术,近年来在多个领域有了应用和推广。本文针对探地雷达技术在土壤水分监测方面应用的科学问题,在总结国内外相关研究的基础上,重点阐述了探地雷达技术测定土壤含水量的基本原理、土壤含水量和土壤介电常数的常用关系式、探地雷达技术测定土壤含水量的研究方法及其在国内外的研究进展,评价了各方法的优势和不足及其在农田土壤中的适用性,并提出存在的问题和研究展望,以期为相关科学研究以及探地雷达在我国农田土壤上应用开创新的领域提供参考。

Rapidly,accurate and non-destructive determination of the spatial and temporal distribution of soil moisture in farmlands and small-scaled basins is ofimmense importance in soil science,agronomy,ecological environmental studies and other related fields.As a new geophysical prospecting method,Ground-Penetrating Radar （GPR） is widely used in field studies.This paper analyzes the GPR application in soil moisture monitoring,focuses on the principle and approach of GPR soil water measurement,summarizes the progress of research in this field both at home and abroad,introduces common relationship between soil dielectric constant and soil water content,evaluates various GPR applications methods in farmlands,and advances problems and prospects of GPR with the view of providing a relevant scientific reference source.