Detection of Cryptomeria japonica roots with ground penetrating radar
Detection of Cryptomeria japonica roots with ground penetrating radar
复制标题
DOI：
10.1080/11263500802150951
复制
发表时间：
2008-07
期刊：
影响因子：
--
通讯作者：
M. Dannoura;Y. Hirano;T. Igarashi;M. Ishii;K. Aono;K. Yamase;Y. Kanazawa
中科院分区：
文献类型：
--
作者：
M. Dannoura;Y. Hirano;T. Igarashi;M. Ishii;K. Aono;K. Yamase;Y. Kanazawa
粗大的树木根系负责大部分的根系碳储量，通常采用开挖和取心等破坏性方法进行测量。探地雷达（GPR）是一种无损探测森林土壤粗根的工具。本研究利用探地雷达对日本主要人工林树种刺槐的根系进行了探测。我们还寻找影响根系分析和检测的因素。粳稻的根和木钉埋在花岗岩砂质土壤中30 cm深。利用900 MHz天线的探地雷达测量，记录了样品在几个样条中的分布和直径。埋根清晰，直径在1.1 ~ 5.2 cm之间。从生成的GPR波形中提取的参数与根直径之间存在显著的正相关关系。根系与土壤含水量的差异是影响探地雷达探测根系能力的关键因素。我们的结论是，探地雷达可以作为一种非破坏性的工具，但需要进一步的调查来确定使用探地雷达检测森林立地根系的最佳条件（例如含水量）和分析方法。
Abstract Coarse tree roots, which are responsible for most root carbon storage, are usually measured by destructive methods such as excavation and coring. Ground penetrating radar (GPR) is a non-destructive tool that could be used to detect coarse roots in forest soils. In this study, we examined whether the roots of Cryptomeria japonica, a major plantation species in Japan, can be detected with GPR. We also looked for factors that impact the analysis and detection of roots. Roots and wooden dowels of C. japonica were buried 30 cm deep in sandy granite soil. From GPR measurements with a 900 MHz antenna, the distribution and diameter of samples in several transects were recorded. The buried roots were detected clearly and could be distinguished at diameters of 1.1–5.2 cm. There were significant positive relationships between root diameter and parameters extracted from the resultant GPR waveform. The difference in water content between roots and soil is a crucial factor impacting the ability to detect roots with GPR. We conclude that GPR can be used as a non-destructive tool, but further investigation is needed to determine optimal conditions (e.g. water content) and analytical methods for using GPR to examine roots in forest sites.