Analysis of Particulate Matter Concentration Intercepted by Trees of a Latin-American Megacity

Forests

Hugo Rondón-Quintana¹  Joaquín Suárez-López²  Carlos Zafra-Mejía³ 

[1] Facultad del Medio Ambiente y Recursos Naturales, Universidad Distrital Francisco José de Caldas, Bogotá E-111711, Colombia;Grupo de Enxeñaría da Auga e do Medio Ambiente (GEAMA), Campus de Elviña, Universidade da Coruña (UdC), s/n, 15071 A Coruña, Spain;Grupo de Investigación en Ingeniería Ambiental (GIIAUD), Facultad del Medio Ambiente y Recursos Naturales, Universidad Distrital Francisco José de Caldas, Bogotá E-111711, Colombia;

关键词: air pollution;    leaf morphology;    particulate matter;    PM_2.5;    urban trees;   

DOI  :  10.3390/f12060723

来源: DOAJ

【 摘 要 】

Urban areas with trees provide several ecosystem services to citizens. There is a growing interest in ecosystem services for the removal of air pollutants such as particulate matter. The objective of this paper is to show a study on the variation of intercepted particulate matter concentration (IPMC) by tree leaves in the megacity of Bogotá (Colombia). The relationship between IPMC and PM_2.5 concentrations observed in air quality stations in two urban zones with different air pollutions was studied. Influences of climate and leaf morphology variables on IPMC were also analyzed. The species under study were Ligustrum-lucidum, Eucalyptus-ficifolia, Tecoma-stans, Callistemon-citrinus, Lafoensia-acuminata, and Quercus-humboldtii. The results showed that leaf IPMC decreased as the PM_2.5 concentration increased. Species that best described this trend were Ligustrum-lucidum and Lafoensia-acuminata. These two species also showed the largest IPMC in their leaves. Indeed, species that showed the largest leaf area were those with the highest IPMC. On average, it was observed that for each 5.0 µg/m³ increase in PM_2.5 concentration the IPMCs of the species Ligustrum-lucidum and Lafoensia-acuminata decreased by 33.6% and 23.1%, respectively. When wind speed increased, there was also an increase in PM_2.5 concentrations and a reduction in the leaf IPMCs.

【 授权许可】

Unknown