Comparación de cuatro métodos de evaluación visual del riesgo de árboles urbanos

Ponce-Donoso, Mauricio; Vallejos-Barra, Óscar; Barra, Jorge Reyes de la; Daniluk-Mosquera, Gustavo; Duarte, Ana Paula Coelho

doi:10.14483/2256201x.12604

Cited by 5 publications

(4 citation statements)

References 12 publications

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“…Visual assessment methods are recognized as efficient for determining the probable risk of rupture of urban trees. Reyes de la Barra et al (2018), comparing four methods of visual risk assessment of urban tree fall, found that visual tree assessment appears to be a reliable tool for predicting tree damage or deterioration and an effective alternative for tree risk assessment.…”

Section: Discussionmentioning

confidence: 99%

Risk assessment of trees protected by law in Curitiba squares, Paraná, Brazil

et al. 2019

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The aim of this article was to evaluate the likelihood of failure of trees protected by law located at Curitiba squares, Paraná, through the adaptation of the tree risk assessment proposed by the International Society of Arboriculture (ISA). Among all 14 trees analyzed, 11 types of defects were identified in the trunk, with the predominance of canker and codominant stems; 12 in the crown, with the presence of dead and broken branches; and seven in the root system, where root lifting was the most recurrent problem. The evaluation of the tree risk assessment indicated that eight of the 14 trees demonstrated moderate risk (57.14 %), presenting 5 to 12 defects; five had a low risk (35.71 %), with one to seven defects; and one was categorized as a high risk of failure (7.14 %), which had 17 defects.Half of the trees presented the risk assessment associated with defects in the trunk, two of them with problems in the crown, and two others had more defects in the root system. These results highlight the importance of monitoring and maintaining the quality of urban forests, a fact that contributes to the safety and well-being of the population that visit Curitiba squares. RESUMENEl objetivo de este artículo fue evaluar la probabilidad de daño de los árboles protegidos por la ley ubicados en las plazas de Curitiba, Paraná, mediante la adaptación de la evaluación de riesgo de árboles propuesta por la Sociedad Internacional de Arboricultura (ISA). Se identificaron 11 tipos de defectos en el tronco, con predominio de tallos cancerosos y codominantes; 12 en la corona, con la presencia de ramas muertas y rotas; y siete en el sistema de raíz, cuya elevación de raíz fue el problema más recurrente. La evaluación de la evaluación del riesgo de árboles indicó que 8 de los 14 árboles mostraron un riesgo moderado (57,14 %), presentando de 5 a 12 defectos; cinco tuvieron un riesgo bajo (35,71 %), con uno a siete defectos; y uno se clasificó como un alto riesgo de fracaso (7,14 %), que tenía 17 defectos. La mitad de los árboles presentaron la evaluación de riesgo asociada con defectos en el tronco, dos de ellos a problemas en la corona y otros dos tenían más defectos en el sistema radicular. Estos resultados resaltan la importancia de monitorear y mantener la calidad de los bosques urbanos, un hecho que contribuye a la seguridad y el bienestar de la población que visita las plazas de Curitiba.Palabras clave: arboricultura, árbol protegido, daño en árboles, bosque urbano.

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Section: Discussionmentioning

confidence: 99%

Risk assessment of trees protected by law in Curitiba squares, Paraná, Brazil

et al. 2019

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“…All of the basic visual tree failure assessment methods in common use today are qualitative in nature [47]. However, using various visual assessment methods to compare tree failure results, significant differences were found between them [48]. Therefore, although existing methods can play a role in rapid, large-scale urban tree failure assessment, they rely too much on the knowledge of tree professionals in the assessment process, resulting in a certain amount of subjectivity and uncertainty in the final assessment results [26,49].…”

Section: Introductionmentioning

confidence: 99%

Tree Failure Assessment of London Plane (Platanus × acerifolia (Aiton) Willd.) Street Trees in Nanjing City

Wang,

Wu,

Sun

et al. 2023

Forests

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The London plane (Platanus × acerifolia (Aiton) Willd.) street tree is a symbolic tree species in Nanjing City, which is known as the “city card”. However, accidents such as street trees falling over cars, affecting traffic, and hurting people have seriously affected the daily lives of citizens. Thus, it is of vital significance to accurately assess the potential for tree failure in London plane street trees in Nanjing City. This study comprehensively considers the growth condition of London plane street trees and their impact on traffic, establishes a scientific street tree failure assessment scheme that contains eight characteristics, creates a tree failure assessment database by thoroughly collecting data on trees, and develops a tree failure assessment model based on factor analysis and k-means clustering. The assessment results show that street trees that pose a high or medium potential for failure are present in proportions of 4.47% and 34.85%, respectively, and are mostly found in Gulou District, Xuanwu District, and Qinhuai District. The average tree failure score of London plane street trees on Changjiang Road in Xuanwu District is the highest, while the road with the lowest tree failure score is Mufu East Road in Gulou District. The results will provide a scientific basis for the maintenance of London plane street trees in Nanjing City and have reference significance for other street tree failure assessment studies.

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“…Regarding the assessment Level 2, there are different methods, where each proposal seeks to give an approach that best fits the needs of the context where it is applied (Calaza and Iglesias 2016, Reyes et al 2018, Coelho-Duarte et al 2021.…”

Section: Introductionmentioning

confidence: 99%

“…There are very few studies in Latin America with the eva-luation of the adherence, adaptation or development of a method applicable to a particular condition (be it territorial or managerial) as objectives. Some are aimed at proposing context-specific methodologies (Sampaio et al 2010, Conceição et al 2017, while others compare existing methods and propose their adjustment (Reyes et al 2018, Ivasko et al 2019, without consistent results to recommend a specific method.…”

Section: Introductionmentioning

confidence: 99%

Proposal of two visual tree risk assessment methods for urban parks in Montevideo, Uruguay

et al. 2021

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The risk assessment of urban trees is a challenge that must be addressed by many cities, in consideration of their climatology, management and spatial heterogeneity. Since these trees are in stages of aging, added to bad practices, inadequate selection and establishment, amongst others, their early elimination, and hence the loss of the ecosystem services they provide, is being promoted. For this reason, two tree risk assessment methods were developed to be applied in a complementary manner in urban parks, one basic visual (BV) and the other detailed visual (DV), both structured with the components of likelihood of failure, likelihood of impact, consequence and risk rating, being analyzed qualitatively and semi quantitatively. The methods were applied in 24 trees of Eucalyptus and Tipuana genus by two groups of assessors, experienced and inexperienced, totaling 192 assessments. Results were analyzed with a linear mixed model (LMM), which showed differences between both methods for the likelihood of failure, where the assessment of branches turned out to be the attribute with the highest impact. The methods proved to be suitable to be used in a complementary manner, since BV turns out to be efficient when it is necessary to assess a large number of trees. DV turned out to be more effective, since it was able to identify more precisely the attributes of the tree that must be considered for adequate risk mitigation and management. Therefore, their combined use is recommended for risk assessment in trees established in parks.

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Comparación de cuatro métodos de evaluación visual del riesgo de árboles urbanos

Cited by 5 publications

References 12 publications

Risk assessment of trees protected by law in Curitiba squares, Paraná, Brazil

Risk assessment of trees protected by law in Curitiba squares, Paraná, Brazil

Tree Failure Assessment of London Plane (Platanus × acerifolia (Aiton) Willd.) Street Trees in Nanjing City

Proposal of two visual tree risk assessment methods for urban parks in Montevideo, Uruguay

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