Cross-Section Resistivity Detection of Tree (Swietenia Magahoni and Gmelina) Using ERT Method

Evi Fazriati,Gian Agistian Algifari,Kusnahadi Susanto,Asep Purnama,Kartika Hajar Kirana,Fitria Hapsari Puteri Sumanto,Irene Siti Amilah Muslimah

doi:10.29303/jppipa.v8i1.965

Evi Fazriati, Gian Agistian Algifari + Show 5 more

Open Access

https://doi.org/10.29303/jppipa.v8i1.965

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Abstract

The existence of trees is very beneficial for humans’ life. There are utilizations of tree such as urban planning and reforestation. However, the tree can be dangerous when the tree is aged and decay because of several factors that might be cause fallen tree. Furthermore, the monitoring activity is needed to know the condition of the tree. One of the methods that can be used to detect hollow in living tree is Electrical Resistivity Tomography (ERT). The ERT is an efficient and nondestructive method that can be potential to estimate resistivity cross section. The measurement of ERT conducted on Swietenia mahagoni and Gmelina with unhealthy and healthy condition visually. The data processed using Res2Dinv and reconstructed for obtaining 2D resistivity cross section. The results shows that the unhealthy Swietenia mahagoni has logarithmic resistivity value range between 0.1-1 Ωm and the healthy Swietenia mahagoni has 1-4 Ωm. Meanwhile, the unhealthy and healthy Gmelina has logarithmic resistivity value range between 0.5-4.5 Ωm and 0.5-3 Ωm, respectively. It is shows that the tree indicated health visually from biological view does not mean the tree is decay. It might be influenced by phenology factor and/or the species of the tree.

Highlights

Trees have many benefits for humans and the environment
The results show that the unhealthy Swietenia mahagoni has logarithmic resistivity value range between 0.1-1 Ωm and the healthy Swietenia mahagoni has 1-4 Ωm
The purpose of this study was to detect tree cross-section through the Electrical Resistivity Tomography (ERT) method to determine the cross-section of resistivity values for unhealthy and healthy trees visually from biological review, it can be used in monitoring the tree health from an early age and can reduce the risk of falling trees

Summary

Introduction

Trees have many benefits for humans and the environment. This is because trees can produce oxygen for a living (Nurnovita, 2011). Trees are able to reduce air pollution, because, through their leaves, trees can catch lead particles derived from vehicles (Hendrasarie, 2007). The decay of trees often leads to personal injury or property damage on both private and public land, and trees are regularly cut because they are considered an unacceptable risk and/or a legal liability. To mitigate the decay of trees, monitoring of growth and health of the tree is needed with a proper method. The electrical Resistivity Tomography (ERT) method can be used to detect tree decay (Larsson, et al, 2004; Soge, et al, 2018)

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