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園藝系研究團隊設計12種人本道路空間  證實能提升行人熱舒適優化步行體驗

 

        隨著全球暖化與都市熱島效應加劇,都市戶外熱環境受關注,而道路為都市開放空間中最大的組成,除交通運輸功能外,也是人們交流、生活、從事商業活動的空間。園藝系副教授林寶秀研究團隊與生工系副教授謝正義合作,以戶外空間熱舒適切入,發展出12種道路空間設計方案,證實能創造更優質的步行體驗。

       過去道路空間設計以車為本,近年永續發展觀念下,逐漸開始推行以人為本的道路空間改善設計。研究團隊從戶外空間的熱舒適切入,探討人本道路空間設計如何有效提昇行人熱舒適,並考量人本道路空間改善設計因子,包括道路走向、植栽帶數量、樹木葉面積指數(leaf area index, LAI),配合實際空間調整變動,發展出12種道路空間設計方案。

       團隊以研究驗證的數值模擬模型(ENVI-met V4)進行模擬,結果證實道路走向、植栽帶數量、樹木LAI值有明顯的協同冷卻效果,未來人本道路空間設計可透過更精確地應用道路走向、種植帶的數量和樹木LAI進行空間設計,以在熱環境方面為行人創造更好的步行體驗。該研究也榮登都市研究領域傑出期刊《Urban Forestry & Urban Greening》(2019, SSCI, 5Y-IF= 4.468, Urban Studies, 5/42= 11.90%)。

 

研究全文:https://doi.org/10.1016/j.ufug.2021.127137

開發12種道路情境之流程。

 

研究團隊開發出12種道路空間設計方案,能有效提升行人熱舒適。

Human-oriented Road Design Creates a More Pedestrian Satisfying Thermal Comfort

 

        As global warming and the urban heat island phenomena become apparent, the urban outdoor thermal environment has caused widespread concern. Roads are an important component in urban outdoor space.

        Besides functions in transportation, they play roles in social interactions and commercial activities. Vehicle-oriented transportation has been dominating road design for decades and worsening the urban thermal environment. Considering sustainable cities and communities, the concept of human-oriented design in road reconstruction should be introduced.

        In this reported study, Associate Prof. Bau-Show Lin at Department of Horticulture and Landscape Architecture, cooperates with Associate Prof. Cheng-I Hsieh at Department of Bioenvironmental Systems Engineering, to dissect this thermal comfort issue for urban outdoor. Their study sought for solutions by applying human-oriented design for improving thermal comfort of pedestrians, and published in Urban Forestry & Urban Greening.

        In the study, multiple human-oriented parameters were considered, including road orientation, number of planting strips, and leaf area index (LAI) of trees when developing alternative road structures. Twelve alternative scenarios of road design were developed and followed by simulation using the ENVI-met V4 model. The result demonstrated that a significant synergistic cooling effect from road orientation, number of planting strips, and LAI of trees was observed. Based on the result, future human-oriented road design could more precisely apply the number of planting strips and LAI of trees while considering road orientation. This study contributes to thermal environment information to create a better walking experience for pedestrians.

 

Urban Forestry & Urban Greening2021, 62, 127137 (SSCI, 5Y-IF= 4.468, Urban Studies, 5/42= 11.90%)

More information: https://doi.org/10.1016/j.ufug.2021.127137

Figure 1 Procedure for developing the 12 alternative scenarios

 

Figure 2 Layout of 12 alternative road structures

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