Title: How the position of trees planting can improve the near-road air quality exposed to CO₂ emission from transportation

Authors: Nurul Aini; Zhenjiang Shen

Addresses: School of Environmental Design, Kanazawa University, Kanazawa, Japan; Department of Architecture, University of Merdeka Malang, Malang, Indonesia ' Xi'an University of Architecture and Technology (XAUAT), No. 13, Yanta Road, Xi'an, Shaanxi Province, 710055, China; School of Environmental Design, Kanazawa University, Kanazawa, Japan

Abstract: This research focuses on evaluating the row position of trees planting to the near-road air quality exposed to CO₂ emitted from transportation. Since emission spread quickly to the roadside, it caused highly concentrated CO₂ in ambient air that may harm human health, meanwhile the roadside is public space for pedestrians. The design of trees planting is necessarily critical in controlling air quality. This research provides four positions of trees planting simulated in Surabaya City, Indonesia, and created the physical condition according to the actual condition in a real 3D environment. CO₂ emission was also calculated based on real data, simulated it using computational fluid dynamics (CFD) analysis. The result displayed that the position of trees planting impact on the air quality was caused by CO₂ dispersion. Planting the trees as a barrier between roadside and road in double-row position is an effective way of decreasing CO₂ dispersion.

Keywords: computational fluid dynamics; CFD; CO₂ dispersion; near-road air quality; design guideline; tree's row position.

DOI: 10.1504/IJSSOC.2020.112446

International Journal of Sustainable Society, 2020 Vol.12 No.4, pp.291 - 308

Received: 04 Jun 2020
Accepted: 24 Aug 2020
Published online: 15 Jan 2021 *

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