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

Júnior, Severo Ivasko; Biondi, Daniela; Ximenes, Eduarda; Reis, Allan Rodrigo Nunho dos; Bomm, Bruna Fernanda Heck

doi:10.4067/s0717-92002019000300347

Cited by 3 publications

(6 citation statements)

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“…Dentre os fatores que prejudicam o desenvolvimento e consequentemente a estabilidade das árvores no ambiente urbano estão a má condição do sistema radicular, devido à compactação do solo, e a ocorrência de injúrias mecânicas pelo manejo incorreto (DURYEA; KAMPF, 2007;LESTARI et al, 2021). Embora a maior parte dos defeitos tenha sido encontrada nas copas, os defeitos no tronco são os mais acessíveis para a identificação, por estarem próximos ao campo de visão do avaliador, uma vez que a identificação minuciosa de defeitos na copa, especialmente em árvores mais altas, pode ser dificultada pela distância (IVASKO JÚNIOR et al, 2019).…”

Section: Discussionunclassified

“…Em áreas verdes com valor histórico, como jardins e praças, as árvores antigas contribuem para a preservação do patrimônio cultural e paisagístico da cidade e para a consciência ambiental da população (BIONDI, 2015). Por isso, a avaliação de risco de queda dessas árvores é fundamental para gestão da floresta urbana (IVASKO JÚNIOR et al, 2019).…”

Section: Introductionunclassified

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Floresta urbana viva

Aoki¹,

Guaraldo²,

Scur³

et al. 2022

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A população mundial mais que triplicou entre os anos de 1950 e 2020, a expectativa de vida dos indivíduos aumentou, e o oitavo bilionésimo habitante da Terra deverá nascer em novembro de 2022, segundo a Organização das Nações Unidas (ONU). Atualmente, mais da metade dos habitantes da terra, cerca de 4,4 bilhões de pessoas, residem em áreas urbanas, e o número deve crescer ainda mais, chegando a quase 70% em 2050. Com o crescimento da população nas cidades, cresce também a preocupação com o bem-estar e a saúde dos habitantes. Diante desses números, a Sociedade Brasileira de Arborização Urbana (SBAU), através do Anais do XXIV Congresso Brasileiro e III Ibero-Americano de Arborização Urbana, convidou interessados da comunidade acadêmica, e dos setores privado, público e demais interessados, a submeter propostas de trabalho no tema “Floresta Urbana Viva”, discutindo assuntos em cinco diferentes eixos PPGS-UFMG.

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Section: Discussionunclassified

Section: Introductionunclassified

Floresta urbana viva

Aoki¹,

Guaraldo²,

Scur³

et al. 2022

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“…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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“…Particularly, this method cannot be used to accurately identify the internal decay of trunks and roots, making the risks of these parts unclear (Li et al, 2009;He et al, 2021). Therefore, it is necessary to explore more accurate diagnosis and assessment methods, especially for the risk detection of ancient or large trees (Hu et al, 2000;Jim, 2005;Zhan et al, 2007;Zheng et al, 2013;Xiao et al, 2016;Ma et al, 2017;Júnior et al, 2019).…”

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confidence: 99%

“…It is worth noting that the "Picus sonic tomography" method is not completely noninvasive, as it requires the installation of measuring nails and sensors in the tree trunk (Xiao et al, 2016). Although these wounds will gradually heal, there is a possibility of fungi and bacteria infiltrating into the tree trunk, making it a "conditional" NDT (Júnior et al, 2019). Ground-penetrating radar (GPR), as a recognized geophysical technology with high efficiency and resolution, can detect decay and layer interfaces in tree trunk by recording reflected and diffracted signals from anomalies in the trunks.…”

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confidence: 99%

Construction of street tree risk assessment system and empirical analysis based on non-destructive testing technologies

He,

Wei,

Wang

2024

Front. Earth Sci.

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The traditional visual tree assessment method is subjective in evaluating tree risks and therefore not effective in precisely detecting internal decay in tree trunk and root systems. To improve the accuracy of street tree risk assessment, a new nondestructive testing method was proposed. This new tree risk assessment method combines different non-destructive testing technologies, such as sonic tomography and ground-penetrating radar, which could significantly increase the accuracy of risk assessment in tree trunks and roots. The method was applied to evaluate the risk of 1,001 street trees in Shanghai’s historical feature protection area. The results revealed that despite most street trees having low branch and trunk risk levels, more than one-third had high root risk levels. The risk factors of street trees were mainly in the trunk and root system, with a significant correlation between the street tree risk level and tree cavities, diseases, and insect pests, as well as the depth and range of the root distribution, leaning, and internal decay in trunks. With the help of non-destructive testing and risk assessment analysis, as well as targeted prevention measures, the possibility of street risk damage was largely reduced, including street trees tilting and collapsing during typhoons, etc.

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

Cited by 3 publications

References 10 publications

Floresta urbana viva

Floresta urbana viva

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

Construction of street tree risk assessment system and empirical analysis based on non-destructive testing technologies

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