灌溉排水学报2024，Vol.43Issue(3)：61-70,10.DOI:10.13522/j.cnki.ggps.2023380
土壤介电常数模型研究综述
Study on soil dielectric constant models:A review
摘要
Abstract
[Objective]Soil dielectric constant measures the ability of a soil to transmit electric fields.It is the ratio of the capacitance of a soil sample to the capacitance of air-filled space of the same volume.In this paper,we systematically analyze the factors that influence the dielectric constant,offering an updated perspective on soil dielectric constant modeling.[Method]This study systematically identifies the primary factors influencing soil dielectric constant based on soil dielectric theory.Additionally,it categorizes and summarizes existing soil dielectric constant models,facilitating a comparative analysis of their strengths,weaknesses,applications,and future development.[Result]The primary influencing factors governing the dielectric constant varied with soil types,with notable dependence on testing frequency.However,the dielectric constant remains a valuable indicator of soil water content.The soil dielectric constant models were broadly categorized into four types:theoretical,semi-empirical,empirical,and boundary models.[Conclusion]Presently,there is a dearth of research focusing on the dielectric properties and model development specific to regional soils.Enhancing model accuracy necessitates incorporating the influence of soil-phase composition,mineral composition,and microstructure on the dielectric constant.This refinement will broaden the application studies for assessing and analyzing soil physical and chemical properties based on dielectric constant testing.关键词
土壤/含水率/电磁波/介电常数/模型Key words
soil/water content/electromagnetic wave/dielectric constant/model分类
农业科技引用本文复制引用
徐兴倩,王海军,屈新,彭光灿,赵熹..土壤介电常数模型研究综述[J].灌溉排水学报,2024,43(3):61-70,10.基金项目
云南省基础研究计划面上基金项目(202101AT070271) （202101AT070271）
国家自然科学基金项目(42367025) （42367025）
云南省高层次人才培养支持计划"青年拔尖人才"专项(YNWR-QNBJ-2020-030) （YNWR-QNBJ-2020-030）
云南省教育厅科学研究基金项目(2023Y1017) （2023Y1017）
