O Microclima De Diferentes Arranjos Paisagísticos Na Arborização De Ruas De Curitiba - Pr

Abstract

Microclimate improvement is frequently stated as one of the benefits generated by urban forestry. However, there are still few studies that quantitatively approach this issue. The goal of this study was to quantify the microclimatic difference between streets with and without trees, for each season and landscaping type. For this, three locations were chosen. Each location showed different species composing landscaping types: Tipuana tipu, Handroanthus chrysotrichus, and Lafoensia pacari with Parapiptadenia rigida. A Kestrel® mini station was placed on a street with trees and another one on a street without trees. The daily period for collecting this data was from 9 a.m. to 3 p.m., with monitoring intervals of 1 minute, repeated during the four seasons of the year, beginning in the winter of 2011. The microclimatic variables analyzed were temperature, relative humidity and wind speed. The results indicated that the streets with trees always had lower temperatures and greater relative humidity values than the streets without trees. The greatest temperature difference was observed in the summer (2.5 o C) and the smallest one in the winter (1.2 o C). For relative humidity, the differences were between 6.4% (spring) and 5.6% (winter), and for wind speed the greatest difference was found in the winter (0.17m/s). Landscaping that uses Tipuana tipu on both sides of the street, planted in a way such as to make their canopies entangle and form a tunnel, is the best choice for a more pleasant microclimate in all seasons of the year. Keywords: microclimate; streets with trees; landscaping types. RESUMOA melhoria microclimática é frequentemente apontada como um dos benefícios gerados pela arborização urbana. No entanto, ainda são poucos os estudos que abordam quantitativamente essa questão. O objetivo dessa pesquisa foi quantificar a diferença microclimática entre ruas arborizadas e sem arborização, para cada estação do ano e arranjo paisagístico. Para isto foram selecionados três locais, contendo um trecho de rua com e sem arborização. Cada local apresentava diferentes espécies compondo os arranjos paisagísticos: Tipuana tipu, Handroanthus chrysotrichus e Lafoensia pacari com Parapiptadenia rigida. Para o monitoramento das variáveis meteorológicas, uma miniestação da marca Kestrel® permaneceu na rua arborizada e a outra na rua sem arborização. A coleta desses dados foi das 9 às 15 horas, com intervalo de monitoramento de 1 minuto, repetida nas quatro estações do ano, com início no inverno de 2011. As variáveis microclimáticas analisadas foram: temperatura, umidade relativa e velocidade do vento. Os resultados indicaram que a maior diferença de temperatura foi observada na estação do verão (2,5°C) e a menor no inverno (1,2°C). Para a umidade relativa, as diferenças ficaram entre 6,4% (primavera) e 5,6% (inverno) e para a velocidade do vento a maior diferença foi encontrada na estação do inverno (0,17 m/s). O arranjo paisagístico que

Luminous Interception of Eucalyptus Clones at Different Structural Arrangements for Integrated Production Systems

“…These results demonstrate the importance of studies that involve different arrangements and clones regarding integrated systems. Therefore, more studies are required, such as the methodologies that evaluate the microclimate (MARTINI et al, 2017), the temperature variation (LEAL et al, 2016), the emission of greenhouse gas (TOSATO; PELISSARI, 2017), the biomass increase (SEGER et al, 2016) and morphometrics (SANTOS et al, 2014;BOBROWSKI et al, 2017) as a way of providing information to correct and work around the aggravating effects of inappropriate agricultural practices and respective global warming.…”