Study of the Effectivity of Several Tree Canopy Types on Roadside Green Belt in Influencing The Distribution Vertically and Horizontally of CO gas Emitted from Transportation Activities to Vicinity of The Road

Workshop and International Seminar on Science of Complex Natural Systems

Sulistyantara, Bambang^1 ; Nasrullah, Nizar^1 ; Fatimah, Indung Sitti^1 ; Pratiwi, Prita Indah^1

Department of Landscape Architecture, Bogor Agricultural University, Kampus IPB Dramaga, Bogor, Indonesia^1

关键词: Gas concentration;    High volumes;    Horizontal distribution;    Human health;    Major cities;    Pollutant distribution;    Residential areas;    Vertical distributions;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/31/1/012031/pdf
DOI  :  10.1088/1755-1315/31/1/012031

来源: IOP

【 摘 要 】

High volume of vehicle leads to the increase of emission of pollutants level in major cities of Indonesia. Carbon monoxide (CO) is categorized as the main gas pollutants from transportation that are harmful to human health. Plants could be used as roadside green belt to reduce the level of pollutants emitted from the transportation. The purpose of this research is to determine tree canopy type that effectively reduce CO gas concentration, to determine the relation between tree canopy types and pollutant distribution vertically and horizontally. The research was conducted on roadside green belt of Jagorawi Highway, especially on the plot of glodogan (Polyanthea fragrans), plot of mahogany (Swietenia macrophylla) and a control plot (open filed). Air sampling was conducted to measure the concentration of CO at three elevation 1.5 m, 5 m, and 10 m at each distance 0 m, 10 m, and 30 m. Concentration of CO was analysed using Iodometri method. Vertical distribution of CO gas shows that the concentration increases with the increasing of sampling elevation on the plot of Polyalthia fragrans and Swietenia mahogany, but the control plot shows the opposite. Horizontal distribution shows that the concentration decreases at the distance 10 m on the plot of Polyalthia fragrans and Swietenia mahogany, but the concentration increases again at the distance 30 m. At the distance 10 m and an elevation 1.5 m, the highest decline percentage of CO occurs on the plot of Swietenia mahogany (45.1%), on the plot of Polyalthia fragrans is just 22.2%, while in control plot, it increases by 2.2%. At the distance 30 m and elevation 1.5 m, the concentration increased again on all of the plots. Thus roadside green belt with a thickness 10 m is not effective in reducing the concentration of CO at the distance 30 m or in residential areas.