第五章 結論與建議
第二節 建議
本研究根據文獻回顧及現地調查的結果進行方案研擬,發展成 13 個不同的 道路組成方案,並以 ENVI-met 微氣候模擬軟體及 Biomet 軟體分別進行數值模 擬與 PET 計算,模擬完後取各方案的早上 8 點至下午 6 點的 PET 進行資料分 析,探討不同道路組成之間的熱舒適差異。根據本研究結果提出以下建議作為 實務操作與後續研究之參考。
一、都市道路規劃設計
本研究結果顯示,道路走向、道路植栽綠帶數量及植栽種類皆會影響行人 的熱舒適,其中以道路走向影響較大,植栽種類次之,道路植栽綠帶數量影響 較小。然而在同樣走向的情況下,道路植栽綠帶數量越多者其熱舒適度越佳,
植栽 LAI 值越高者其熱舒適度也越佳。
因此在人本的道路規劃設計時,因東西走向的道路接受太陽直射的時間較 多,相對於南北走向的道路較為不舒適,在規劃設計上建議應在最小影響車流 量的情況下設立多條植栽綠帶,並且以種植 LAI 較高的樹種,如榕樹、印度橡 膠樹等為優先選擇,創造遮蔭來阻擋太陽輻射,以減少行人的不舒適狀況。
二、後續研究建議
本研究主要針對人本交通中提倡的「增加景觀綠美化」部分進行討論,以 道路走向、植栽綠帶數量及植栽種類做為自變項進行模擬,但本研究結果僅針 對臺北市的 40 公尺主要道路進行探討,後續可針對不同寬度及層級的道路進行 討論。
此外,在人本交通的概念中尚有「人行道拓寬」、「舖面改善」等部分,因 舖面也是影響微氣候的因子之一,不同的舖面材質與植栽的組合對於行人熱舒 適的影響也尚須被釐清,建議未來研究也可以往此方向進行。
參 考 文 獻
9. Akbari, H., Pomerantz, M., & Taha, H. (2001). Cool surfaces and shade trees to reduceenergy use and improve air quality in urban areas. Solar Energy, 70(3), 295–310.
10. Ali-Toudert, F., & Mayer, H. (2006). Numerical study on the effects of aspect ratio and orientation of an urban street canyon on outdoor thermal comfort in hot and dry climate. Building and Environment, 41(2), 94-108.
11. Ali-Toudert, F., & Mayer, H. (2007). Effects of asymmetry, galleries, overhanging façades and vegetation on thermal comfort in urban street canyons.
Solar Energy, 81(6), 742-754.
12. ASHRAE. (2004). ASHRAE Standard 55:Thermal Environmental Conditions for Human Occupancy. Atlanta:American Society of Heating, Refrigerating and Air Conditioning Engineers, Inc.
13. Bourbia, F., & Awbi, H. B. (2004). Building cluster and shading in urban canyon for hot dry climate. Renewable Energy, 29(2), 249-262.
14. Brown, R. D. & Terry J. G. (1995). Microclimatic Landscape Design:
Creating Thermal Comfort and Energy Efficiency .New York: John Wiley &
Sons, Inc.
15. Emmanuel, R., Rosenlund, H., & Johansson, E. (2007). Urban shading—a design option for the tropics? A study in Colombo, Sri Lanka. International
Journal of Climatology, 27(14), 1995-2004.
16. Fanger, P. O. (1970).Thermal comfort. Danish Technical Press, Copenhagen.
17. Fröhlich, D., & Matzarakis, A. (2012). Modeling of changes in thermal bioclimate: examples based on urban spaces in Freiburg, Germany. Theoretical
and Applied Climatology, 111(3-4), 547-558.
18. Gagge, A. P., Fobelets, A. P., & Berglund, L. G.(1986). A standard predictive index of human response to the thermal environment. ASHRAE Transactions,
92(pt 2B), 709-731.
19. Grimmond, C. S. B., Potter, S. K., Zutter, H. N., & Souch, C. (2001). Rapid methods to estimate sky-view factors applied to urban areas. International
Journal of Climatology, 21(7), 903-913.
20. He, X., Miao, S., Shen, S., Li, J., Zhang, B., Zhang, Z., & Chen, X. (2015).
Influence of sky view factor on outdoor thermal environment and physiological equivalent temperature. Int J Biometeorol, 59(3), 285-297.
21. Höppe, P. (1999). The physiological equivalent temperature - A universal index for the biometeorological assessment of the thermal environent. Int J
Biometeorol, 43(2), 71-75.
22. Huttner, S. ( 2012 ) . Further development and application of the 3D microclimate simulation ENVI-met. PhD thesis. Johannes Gutenberg- Universität, Mainz.
23. Jefferson, C., Rowe, J., & Brebbia, C. (2001). The Sustainable Street the Environmental: Human and Economic Aspects of Street Design and Management”, Bonston: WIT Press.
24. Jesionek, K.& Bruse, M. (2003). Impacts of vegetation on the microclimate:
Modelling standardized building structures with different greening level.
ICUC5.
25. Ketterer, C., & Matzarakis, A. (2014). Human-biometeorological assessment of heat stress reduction by replanning measures in Stuttgart, Germany.
Landscape and Urban Planning, 122, 78-88.
26. Lee, H., Mayer, H., & Chen, L. (2016). Contribution of trees and grasslands to the mitigation of human heat stress in a residential district of Freiburg, Southwest Germany. Landscape and Urban Planning, 148, 37-50.
27. Lillebye, E. (1996). Architectural and functional relationships in street planning,an history view,Landscape and Urban Planning, 35 , 85-105.
28. Lillebye, E. (2001). The Sustainable Street the Environmental, Human and Economic Aspects of Street Design and Management, Boston: WIT Press.
29. Lin, B.S. & Lin, C.T. (2016). Preliminary study of the influence of the spatial arrangement of urban parks on local temperature reduction. Urban Forestry &
Urban Greening, 20, 348-357.
30. Lin, T. P., & Matzarakis, A. (2008). Tourism climate and thermal comfort in Sun Moon Lake, Taiwan. Int J Biometeorol, 52(4), 281-290.
31. Mayer, H., & Höppe, P. (1987). Thermal comfort of man in different urban environment. Theoretical and Applied Climatology, 38(1), 43-49.
32. Oke, T. R. (1981). Canyon geometry and the nocturnal urban heat island:
Comparison of scale model and field observations. J. Climatol., 1, 237–254.
33. Oke, T. R. (1988). Street Design and Urban Canopy Layer Climate. Energy
and Building, 11(1-3), 103-113.
34. Qaid, A., & Ossen, D. R. (2015). Effect of asymmetrical street aspect ratios on microclimates in hot, humid regions. Int J Biometeorol, 59(6), 657-677.
35. Shahidan, M. F., Shariff, M. K. M., Jones, P., Salleh, E., & Abdullah, A. M.
(2010). A comparison of Mesua ferrea L. and Hura crepitans L. for shade creation and radiation modification in improving thermal comfort. Landscape
and Urban Planning, 97(3), 168-181.
36. Sun, C.Y. (2011). A street thermal environment study in summer by the mobile transect technique. Theoretical and Applied Climatology, 106(3-4), 433-442.
37. Taleb, H., & Taleb, D. (2014). Enhancing the thermal comfort on urban level in a desert area: Case study of Dubai, United Arab Emirates. Urban Forestry &
Urban Greening, 13(2), 253-260.
38. Taleghani, M., Kleerekoper, L., Tenpierik, M., & van den Dobbelsteen, A.
(2015). Outdoor thermal comfort within five different urban forms in the Netherlands. Building and Environment, 83, 65-78.
39. Touchaei, A. G., & Wang, Y. (2015). Characterizing urban heat island in Montreal (Canada)—Effect of urban morphology. Sustainable Cities and
Society, 19, 395-402.
40. Watson, I. D. & Johnson, G. T. (1987). Graphical estimation of sky view-factors in urban environments. J. Climatol., 7, 193–197.
41. Willmot, C. J.(1981).On the validation of models, Physical Geography, 2,184–
194.
42. Yahia, M. W., & Johansson, E. (2013a). Influence of urban planning regulations on the microclimate in a hot dry climate: The example of Damascus, Syria. Journal of Housing and the Built Environment, 28(1), 51-65.
43. Yahia, M. W., & Johansson, E. (2014). Landscape interventions in improving thermal comfort in the hot dry city of Damascus, Syria—The example of residential spaces with detached buildings. Landscape and Urban Planning, 44. Ye., G., Yang., C., Chen., Y., & Li., Y. (2003). A new approach for measuring
predicted mean vote (PMV) and standard effective temperature (SET∗).
Building and Environment, 38(1), 33-44.
45. Zeng, Y., & Dong, L. (2015). Thermal human biometeorological conditions and subjective thermal sensation in pedestrian streets in Chengdu, China. Int J
Biometeorol, 59(1), 99-108.
附件一、各方案不同時段 PET 變化圖
1. 方案 EW_0 上午 8 點至下午 6 點的道路空間之 PET 變化圖
2. 方案 EW_2_low 上午 8 點至下午 6 點的道路空間之 PET 變化圖
3. 方案 EW_3_low 上午 8 點至下午 6 點的道路空間之 PET 變化圖
4. 方案 EW_4_low 上午 8 點至下午 6 點的道路空間之 PET 變化圖
5. 方案 EW_2_high 上午 8 點至下午 6 點的道路空間之 PET 變化圖
6. 方案 EW_3_high 上午 8 點至下午 6 點的道路空間之 PET 變化圖
7. 方案 EW_type4_high 上午 8 點至下午 6 點的道路空間之 PET 變化圖
8. 方案 NS_2_low 上午 8 點至下午 6 點的道路空間之 PET 變化圖
9. NS_3_low 上午 8 點至下午 6 點的道路空間之 PET 變化圖
10. NS_4_low 上午 8 點至下午 6 點的道路空間之 PET 變化圖
11. NS_2_high 上午 8 點至下午 6 點的道路空間之 PET 變化圖
12. NS_3_high 上午 8 點至下午 6 點的道路空間之 PET 變化圖
13. NS_4_high 上午 8 點至下午 6 點的道路空間之 PET 變化圖