Reliability of Noninvasive Sonic Tomography for the Detection of Internal Defects in Old, Large Trees of Abies holophylla Maxim

Son, Jiwon; Lee, Gwanggyu; Shin, Jin-Ho

doi:10.3390/f12081131

Cited by 5 publications

(5 citation statements)

References 14 publications

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“…The linear regression analysis revealed that the regression model was significantly positively correlated with the change in the RM results of the regression equation. However, the correlation with the RM results, with an explanatory power of 40.5%, was lower than those observed in fir (R 2 = 0.675) and zelkova trees (R 2 = 0.764) [8,9] (F = 56.442, p < 0.001, R 2 = 0.405, Figure 2). In contrast, after comparing with the actual cross-section, no damage, such as decay or cavity, was observed in Figure 1a-d, but ring shakes were present.…”

Section: Comparison Of Sot and Rm Resultsmentioning

confidence: 56%

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Noninvasive Sonic Tomography for Detecting Internal Defects in Old, Large Oriental White Oak in Cultural Heritage Areas

Son

Lee

Shin

2022

Forests

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Incidence rates of tree damage are increasing because of the increased intensity and frequency of abnormal climate events such as strong winds and heavy rains. Structural defects inside trees are difficult to detect by visual inspection; therefore, it is difficult to respond to them in advance based on prediction. Noninvasive sonic tomography (SoT) is a method that estimates internal defects while minimizing physical damage to trees; however, its accuracy differs depending on the species. Therefore, in this study, we aimed to compare the performance of noninvasive SoT and invasive resistance micro-drilling (RM) in detecting tree damage in oriental white oak (Quercus aliena Blume) distributed in East Asia and performed wood section analysis to verify the accuracy of noninvasive SoT. Linear regression analysis showed that defects in tomograms tended to increase with an increase in the number of defects in the RM profile, but the value of R2 was 0.405, which is lower than that of other tree species. The results from the wood section analysis and SoT were compared; the SoT tomograms appropriately reflected the location and size of the defects with a tendency to overestimate the defects when cracks were present, while the electric resistance tomography was effective for detecting incipient decay.

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Section: Comparison Of Sot and Rm Resultsmentioning

confidence: 56%

“…To date, studies [1][2][3][4][5][6] on SoT methods have mainly been conducted on European and tropical tree species. SoT studies on native Asian species or old trees are insufficient, except those conducted on native zelkova and fir trees in urban parks in China [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Noninvasive Sonic Tomography for Detecting Internal Defects in Old, Large Oriental White Oak in Cultural Heritage Areas

Son

Lee

Shin

2022

Forests

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“…In comparison to the cross-section images, the tomograms were found to reflect the size and position of internal decay, although the detected size tended to be larger than the actual decay area. These studies indicate acoustic tomography is a promising non-invasive technique for detecting internal defects in very large trees [56].…”

Section: Discussion-tomograph As a Tool Supporting The Management Of Historical Greenerymentioning

confidence: 88%

Sustainable Management of Very Large Trees with the Use of Acoustic Tomography

Dudkiewicz

Durlak

2021

Sustainability

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This manuscript summarizes the process by which large trees are protected in Poland, how they gain protected status, and the use of acoustic tomography to assess the structural soundness of five individual trees. The authors discuss tree stressors and tree care options, and how the outcome of each assessment was used in the decision-making process. Moreover, the use of acoustic tomography as an assessment tool helps to gain public acceptance for the assessment. In sustainable development, there is talk of the conscious management of urban vegetation, and specifically tree populations in the city. In line with sustainable development, actions are taken to manage the existing natural resources, e.g., historic trees, properly. Thanks to using an acoustic tomograph, it is possible to diagnose old tree specimens, take care of the safety of people and property near the natural monument, and to test candidates for their eligibility as monuments. Thanks to the research presented, it was ordered that one poplar tree be left and observed in Lublin, that two linden trees be cut down in Sandomierz and Lublin, that arborist works consisting of lowering the height of a linden tree in Sandomierz be undertaken, and that monument protection be applied for an ash tree in Łęczna. A visual tree assessment (VTA) was the starting point for this research. Each of the trees could endanger the safety of site users, and the diagnostics performed using sound waves were crucial in assessing their health condition. Our results highlight that acoustic tomography is an essential diagnostic method applicable to trees belonging to cultural heritage, such as old trees, and is effective in preventive tree management through the monitoring of mid- to long-term changes in internal decay or cavities that are difficult to diagnose with the naked eye.

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“…Although acoustic tomography tends to overestimate damaged areas, particularly with more sensors, its combination with perforation resistance assessment permits a diagnosis of potential internal defects in trees. This is particularly importante for mature trees with high historical and cultural value, which may be susceptible to physical damage (Son et al 2021). The resistance profile of wood is influenced by factors such as the density at the drilling location, growth ring structure Ejemplo de evaluación realizada en uno de los árboles de Eucalyptus robusta (árbol 37).…”

Section: Discussionmentioning

confidence: 99%

Historic urban trees: Assessing the trunk’s internal integrity

Vieira-dos-Santos-Ataide,

dos-Santos-Ataide,

Cerqueira-Martins

et al. 2023

Bosque (Valdivia)

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In addition to the general benefits that all trees provide, historic urban trees contribute significant cultural and affective value to the quality of life in cities. As these trees age, their maintenance requires meticulous and consistent attention to reduce associated risks. The objective of the present study was to identify and estimate the extent of internal damage in the trunk of historic urban trees. Forty-five Eucalyptus robusta trees located in a popular square in the city of Nova Friburgo-RJ, Brazil were evaluated. A visual analysis of the crown, trunk, and root system was performed, followed by complementary evaluations of acoustic tomography and, when necessary, resistography. Mathematical models were adjusted to infer the relationship and influence of dendrometric characteristics (total height, height to the first branch, diameter at 1.30 m above the ground, and crown diameter) and the mean resistographic amplitude on the mean wave propagation velocity acoustic. Most trees presented some form of external lesion on their trunks, and, generally, trees with severe lesions also exhibited alterations in the propagation velocity of acoustic waves and in the perforation resistance profile. The combination of different techniques allows for the identification of areas with possible internal injuries in the trunks of historic urban trees. However, it is worth noting that the extent of these areas varied among the techniques used.

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Reliability of Noninvasive Sonic Tomography for the Detection of Internal Defects in Old, Large Trees of Abies holophylla Maxim

Cited by 5 publications

References 14 publications

Noninvasive Sonic Tomography for Detecting Internal Defects in Old, Large Oriental White Oak in Cultural Heritage Areas

Noninvasive Sonic Tomography for Detecting Internal Defects in Old, Large Oriental White Oak in Cultural Heritage Areas

Sustainable Management of Very Large Trees with the Use of Acoustic Tomography

Historic urban trees: Assessing the trunk’s internal integrity

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Reliability of Noninvasive Sonic Tomography for the Detection of Internal Defects in Old, Large Trees of Abies holophylla Maxim

Cited by 5 publications

References 14 publications

Noninvasive Sonic Tomography for Detecting Internal Defects in Old, Large Oriental White Oak in Cultural Heritage Areas

Noninvasive Sonic Tomography for Detecting Internal Defects in Old, Large Oriental White Oak in Cultural Heritage Areas

Sustainable Management of Very Large Trees with the Use of Acoustic Tomography

Historic urban trees: Assessing the trunk&#8217;s internal integrity

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Historic urban trees: Assessing the trunk’s internal integrity