干旱区研究2026，Vol.43Issue(6)：1217-1229,13.DOI:10.13866/j.azr.2026.06.09
探地雷达瞬时属性融合的土壤分层识别技术研究
Soil layer identification technology based on the fusion of instantaneous attributes of ground penetrating radar
摘要
Abstract
Soil stratification structure is a critical factor governing water-salt transport and crop growth in farm-land,and its accurate identification is essential for assessing tillage quality and optimizing water-salt manage-ment.Addressing the challenges of rapid electromagnetic wave attenuation and the difficulty of identifying deep weak interfaces in arid saline-alkali soils,this study proposes a soil stratification identification method based on the fusion of ground-penetrating radar(GPR)instantaneous attributes.The method was validated using typical cotton fields with drip irrigation durations of 16 a and 26 a in Xinjiang.Using a 1000 MHz high-frequency GPR,shallow soil structure data were acquired,and instantaneous attributes were extracted via the Hilbert transform.On this basis,a time-gradient enhanced layer boundary fusion index was constructed to achieve weighted integra-tion of envelope energy and time-gradient information,thereby suppressing noise and enhancing weak reflection signals.The results indicate that the proposed fusion method effectively overcomes the limitations of single-attri-bute analysis,clearly identifying the topsoil,plow layer,plow pan,and subsoil within the 0-60 cm depth range.Compared with measured profiles,the absolute error of layer boundary identification ranged from 0.55 to 4.83 cm(mean:2.04 cm),and the relative error ranged from 1.78%to 16.60%(mean:9.09%),demonstrating high detec-tion precision.Further application of this method revealed that long-term drip irrigation(26 a)caused a marked downward migration of the boundaries between the plow layer and plow pan,quantitatively characterizing the re-modeling of the soil profile by long-term tillage.The attribute fusion approach proposed in this study provides a high-precision,non-destructive detection means for identifying farmland soil stratification under complex geolog-ical conditions.关键词
探地雷达/Hilbert变换/瞬时属性/膜下滴灌/土壤分层Key words
ground penetrating radar/Hilbert transform/instantaneous attribute/mulched drip irrigation/soil stratification引用本文复制引用
陈强,张金珠,王振华,黄天宝,罗鹏程..探地雷达瞬时属性融合的土壤分层识别技术研究[J].干旱区研究,2026,43(6):1217-1229,13.基金项目
中央引导地方科技发展基金项目(2025YD17) （2025YD17）
国家重点研发计划项目(2021YFD1900802) （2021YFD1900802）
国家自然科学基金项目(52279040) （52279040）
