张于,陆海鹏,朱向明,陈一民,隋跃宇,富美玲,彭伟,冉恩华.基于探地雷达的黑土区农田表层含水量测定研究[J].干旱地区农业研究,2026,(1):260~268
基于探地雷达的黑土区农田表层含水量测定研究
Determination of top soil water content in croplands of black soil area based on ground penetrating radar
  
DOI：10.7606/j.issn.1000-7601.2026.01.26
中文关键词:  探地雷达  土壤含水量  土壤类型  介电常数模型  振幅包络平均值法  空间分布
英文关键词:ground penetrating radar  soil water content  soil type  permittivity model  average envelope amplitude method  spatial distribution
基金项目:国家重点研发计划项目 (2021YFD1500102)；中国科学院战略性先导项目“黑土地保护与利用科技创新工程”专项（XDA28010401）；中国科学院国际合作局国际伙伴计划（131323KYSB20210004）
作者单位
张于 黑土地保护与利用全国重点实验室,中国科学院东北地理与农业生态研究所,黑龙江 哈尔滨 150081；黑龙江大学现代农业与生态环境学院,黑龙江 哈尔滨 150006 
陆海鹏 黑土地保护与利用全国重点实验室,中国科学院东北地理与农业生态研究所,黑龙江 哈尔滨 150081；中国科学院大学,北京 100049 
朱向明 黑土地保护与利用全国重点实验室,中国科学院东北地理与农业生态研究所,黑龙江 哈尔滨 150081 
陈一民 黑土地保护与利用全国重点实验室,中国科学院东北地理与农业生态研究所,黑龙江 哈尔滨 150081 
隋跃宇 黑土地保护与利用全国重点实验室,中国科学院东北地理与农业生态研究所,黑龙江 哈尔滨 150081 
富美玲 黑土地保护与利用全国重点实验室,中国科学院东北地理与农业生态研究所,黑龙江 哈尔滨 150081 
彭伟 黑土地保护与利用全国重点实验室,中国科学院东北地理与农业生态研究所,黑龙江 哈尔滨 150081 
冉恩华 黑土地保护与利用全国重点实验室,中国科学院东北地理与农业生态研究所,黑龙江 哈尔滨 150081；中国科学院大学,北京 100049 
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中文摘要:
      为明确探地雷达振幅包络平均值法因素(average envelope amplitude，AEA)获取黑土区表层土壤含水量的有效性，探讨中心频率、土壤类型及介电常数模型等因素对该方法准确性的影响，以草甸土、暗棕壤、白浆土为研究对象，采用中心频率为250、500 MHz的两组探地雷达，开展黑土区农田表层含水量探测试验，并与TDR测定结果进行对比分析。结果表明：(1)中心频率为500 MHz的探地雷达反演精度优于中心频率为250 MHz的探地雷达，两者的探测深度均为30 cm左右；(2)Topp模型表现优于其他3种模型，对总体土壤含水量分布预测更为准确，RMSE最低，约为0.02 cm3·cm-3；(3)各种土壤类型下含水量反演结果均较好，其中，草甸土和暗棕壤的反演效果最佳，白浆土次之，但总体来看R2均高于0.88，RMSE均小于0.035 cm3·cm-3；(4)采用普通克里金网格构建的土壤含水量分布图能够较为准确地反映农田尺度土壤含水量的空间分布。综上可知，探地雷达振幅包络平均值法可以用于农田尺度黑土区土壤含水量分布的快速、无损监测。
英文摘要:
      To clarify the effectiveness of the average envelope amplitude (AEA) method of ground penetrating radar (GPR) in acquiring soil surface water content in black soil regions and to investigate the impacts of central frequency, soil type, and permittivity models on the accuracy of this method, field experiments were conducted in farmland of black soil regions. Focusing on meadow soil, dark brown soil, and albic soil, two sets of GPR systems with central frequencies of 250 MHz and 500 MHz were employed for soil surface water detection. The results were compared and analyzed with the results obtained using TDR. The results showed that: (1) The ground penetrating radar with a central frequency of 500 MHz demonstrated a superior retrieval accuracy compared to the 250 MHz frequency, with a similar detection depth of approximately 30 cm. (2) The Topp model outperformed the other three models, exhibiting higher accuracy in predicting the spatial distribution of total soil water content, with the lowest RMSE of approximately 0.02 cm3·cm-3. (3) The water content inversion results were generally favorable across all soil types. Among them, the method showed good performance in meadow soil and dark brown soil, followed by albic soil. However, in general, the R2 values were all above 0.88 and RMSE were all less than 0.035 cm3·cm-3. (4) The soil water distribution map constructed using the Ordinary Kriging interpolation grid effectively represented the spatial distribution of soil water at the farmland scale. In summary, the average envelope amplitude method of GPR can be used for rapid and non\|destructive monitoring of soil water distribution in the farmland scale of black soil regions.
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