Assessing the Requirement for Green Open Spaces on the Soekarno Hatta Street’s Road Median in Balikpapan City Based on Motorized Vehicle’s Greenhouse Gas Emissions

Environmental Engineering Department, Department of Earth and Environmental Sciences, Institut Teknologi Kalimantan, Balikpapan, Indonesia

^* Corresponding author: chandra.suryani03@lecturer.itk.ac.id

Abstract

Growing number of populations can lead to an increase of Greenhouse gas (GHG). The increasing amount of GHG can lead to devastated environment and global warming. From all human activities, transportation contribute highest, as previous study mentioned that motorized vehicle emissions contribute to 70% to air pollution in Indonesia. In Balikpapan city, in 2022, the number of motorized vehicles was 3,527,657 units. This number is increasing from 2021 which is 700,457 units. The increasing number of vehicles can result in an increase in CO2 which can have an impact on health and global warming. One way to reduce CO2e is with Green Open Space (GOS). In this study, the amount of CO₂ emissions was calculated using the fuel consumption method. After that yearly emission was forecasted. Furthermore, GOS needed in the Soekarno Hatta Road segment was calculated based on the amount of forecasted CO₂ per year. It was found that the busiest time in Soekarno Hatta Street segment is 16.00-18.00 WITA with estimated CO₂emissions in weekday is higher than that in weekend. The estimate number of emissions in one day reaching 2,910.89 Kg- CO₂/day in weekend and 2,072.44 Kg- CO₂/year in weekend with a total estimated CO₂ emissions per year of 977,348.49 Kg- CO2/year. Thus, 717 units of Pucuk Merah (Syzygium oleana) per year needed to absorb this CO2 emissions.