Non-invasive estimation of root zone soil moisture from coarse root reflections in ground-penetrating radar images
Non-invasive estimation of root zone soil moisture from coarse root reflections in ground-penetrating radar images
复制标题
根据探地雷达图像中的粗根反射对根区土壤湿度进行非侵入性估计
DOI：
10.1007/s11104-018-03919-5
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发表时间：
2019-03
期刊：
影响因子：
4.9
通讯作者：
Lin Henry
中科院分区：
文献类型：
--
作者：
Liu Xinbo;Cui Xihong;Guo Li;Chen Jin;Li Wentao;Yang Dedi;Cao Xin;Chen Xuehong;Liu Qixin;Lin Henry
根区土壤水分是土壤-植物-大气连续体水分循环的重要组成部分。然而，其在现场的测量仍然是一个挑战，特别是非侵入性和重复。在这里，我们开发了一种新方法，使用探地雷达（GPR）来量化根区土壤水分。方法选择粗根作为反射体来收集GPR雷达图。利用双曲线自动检测算法识别雷达图中的粗根反射，确定雷达波的传播速度，进而计算土壤剖面平均含水量（ASWC）和深度区间平均含水量（ISWC）。总共，GPR反射数据的55根样品从三个计算机模拟方案和两个现场实验在桑迪灌丛，一个埋根在已知的深度和其他未受干扰的条件下，被用来评估所提出的方法。即使在两个田间试验中，ASWC和ISWC的估计相对于从土壤芯测量的均方根误差分别低至0.003和0.012 m3·m-3.ConclusionThe建议的方法提供了一种新的方法来量化根区土壤水分的非侵入性，允许重复测量。本研究拓展了探地雷达在根系和土壤研究中的应用，提高了我们监测植物-土壤-水相互作用的能力。
Background and aimsRoot zone soil moisture is an important component in water cycling through the soil-plant-atmosphere continuum. However, its measurement in the field remains a challenge, especially non-invasively and repeatedly. Here, we developed a new method that uses ground-penetrating radar (GPR) to quantify root zone soil moisture.MethodsCoarse roots were chosen as reflectors to collect GPR radargrams. An automatic hyperbola detection algorithm identified coarse root reflections in GPR radargrams and determined the velocity of GPR wave, which then was used to calculate the average soil water content of a soil profile (ASWC) and soil water content in a depth interval (ISWC). In total, GPR reflection data of 55 root samples from three computer simulation scenarios and two field experiments in sandy shrubland, one burying roots at known depths and the other under the undisturbed condition, were used to evaluate the proposed method.ResultsBoth the simulated and the field collected data demonstrated the effectiveness of the proposed method for measuring root zone soil moisture with high accuracy. Even in the two field experiments, the root-mean-square errors of the estimated ASWC and ISWC relative to measurements from soil cores were as low as 0.003 and 0.012 m3·m−3, respectively.ConclusionThe proposed method offers a new way of quantifying root zone soil moisture non-invasively that allows repeated measurements. This study expands the application of GPR in root and soil study and enhances our ability to monitor plant-soil-water interactions.
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影响因子：
3.3
作者：
K. Grote;S. Hubbard;Y. Rubin
通讯作者：
K. Grote;S. Hubbard;Y. Rubin
DOI：
10.1002/0471654507.eme152
发表时间：
2005-04
期刊：
--
影响因子：
--
作者：
D. Daniels
通讯作者：
D. Daniels
基于随机Hough变换的探地雷达剖面树根自动识别
影响因子：
5
作者：
Li, Wentao;Cui, Xihong;Cao, Xin
通讯作者：
Cao, Xin
影响因子：
6.4
作者：
A. Tran;P. Bogaert;F. Wiaux;M. Vanclooster;S. Lambot
通讯作者：
A. Tran;P. Bogaert;F. Wiaux;M. Vanclooster;S. Lambot
影响因子：
6.4
作者：
C. Steelman;A. Endres
通讯作者：
C. Steelman;A. Endres