Diurnal Monitoring of Moisture Content of Scots Pine and Small-Leaved Lime Trunks Using Ground Penetrating Radar (GPR) and Increment Cores

Ground penetrating radar is non-invasive technology suitable for mapping moisture content variations since it shows high sensitivity to changes in water saturation. In this work we used a GPR tomography approach to estimate moisture content within two small-leaved lime (Tilia cordata) and two Scots...

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Bibliographic Details
Published in:Forests 2023-02, Vol.14 (2), p.406
Main Authors: Sudakova, Maria, Terentieva, Eugenia, Kalashnikov, Alexey, Seregin, Ivan, Yaroslavtsev, Alexey
Format: Article
Language:English
Subjects:
Analysis
Antennas
Cores
Data processing
Dielectric properties
Diurnal
Environmental aspects
Ground penetrating radar
Lime fruit
Moisture content
Moisture effects
Monitoring
non-destructive testing
Pine
Pine trees
Pinus sylvestris
Properties
Radar
Receivers & amplifiers
Scots pine
Stems (Botany)
Tomography
tree stability
Trees
trees monitoring
Velocity
Water content
Water shortages
wood decay
wood moisture content
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Summary:Ground penetrating radar is non-invasive technology suitable for mapping moisture content variations since it shows high sensitivity to changes in water saturation. In this work we used a GPR tomography approach to estimate moisture content within two small-leaved lime (Tilia cordata) and two Scots pine (Pinus sylvestris) trunks. Additional information was derived using the method of GPR zero-offset. GPR data was collected in Moscow (diurnal monitoring in September 2021) using a shielded GPR antenna working at 1500 MHz. Moisture values derived from GPR data were compared with the values obtained directly by measuring sampled wood cores gravimetrically. A good agreement was observed between GPR-derived moisture content and core sample-derived values. Notwithstanding GPR-derived moisture content is about two times higher than core sample-derived values, a strong linear relation with a determination coefficient more than 0.8 is observed. Diurnal monitoring did not reveal any significant changes in moisture content inside the trunks. It can be concluded that the period of early autumn in the Moscow region is characterized by a constant moisture content of the small-leaved lime trunk during the day.
ISSN:1999-4907
1999-4907
DOI:10.3390/f14020406