第七章 結論與建議
第二節 建議
建議一
辦理本研究成果之推廣說明會：立即可行建議 主辦單位：內政部建築研究所
協辦單位：社團法人中華民國風工程學會、中華民國全國建築師公會 為使本計畫之研究成果能立即為建築區植栽防風規劃與設計之應用，
可以辦理本研究成果之推廣說明會。
建議二
針對常見綠建築植栽樹種進行特性分類：中長期建議 主辦單位：農委會林務局、林業試驗所
協辦單位：社團法人中華民國風工程學會、中華民國全國建築師公會 研究中將「台灣原生植物圖鑑」中列舉之喬木，依據照片外觀進行樹 冠密度了初步分類，以供排樹植栽減風設計規劃參酌之依據。建議辦理常 見植栽樹種特性的相關研究，以確認本研究樹種分類之正確性。
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會發生不適強風的情形。
12 都 市 範圍 內因 有建 築物 影 響，穩定流場情形不多，如 何應用本研究成果?請說明。
排樹前因鄰近建築或地物之影響 確 有 可 能 造 成 不 穩 定 的 來 風 風 況。本研究將沿用本國現行風力規 範建議的準穩定(quasi-steady)分析 概念進行探討，其結果應已具實際 應用價值。
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八、王安強副所長：
1.本案在單株樹及排樹之研究成果 具有學術價值。實務面上，因模擬 都 市 建 築 及 風 場 有 一 定 之 困 難 度，所內過往進行過廣告招牌及雨 遮等都市內構造物受風之相關研 究，是否能作為本案研究之參考？
所內過往在如招牌及雨遮等附屬建 物受風之相關研究上成果豐碩。異 於前述之研究對象，樹對風而言是 可穿透的，故其相應風的流動與行 為並不相同。依主席之建議，研究 中 將 參 酌 這 些 過 往 研 究 之 推 行 步 驟，從事系統化受風情況的分析。
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93 canopy flows using plant-scale representation
(2) Turbulent kinetic energy budgets in a model canopy: comparisons between LES and wind-tunnel
依委員建議，於第二章與參考文獻 中增補此兩篇文章之引用。
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附 錄 四 第 一 次 專 家 座 談 會 議 意 見 與 回 應
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1.本研究目前以樹形來分析減風效 果，是否以該樹的面積與穿透性來 研究其減風效果。
對單株樹而言，樹的形狀、大小與 樹冠之穿透性是影響樹後減風效果 的主要因子。對排樹而言，樹與樹 的間隔也屬重要。本研究乃循此觀 點，逐步進行這些影響因之對行人 風場中地面風速的減風效果進行探 討。
黎益肇教授：
1.是否以樹冠密度來對減風效果做 直接的分析，未來可透過相對應的 樹冠密度來引用相同的率定參數 至不同的樹種進行 CFD 模擬，並 建置資料庫。
委員的建議與本研究進行的方向一 致。研究中 3 個選定樹種相應之樹 冠 枝 葉 密 度 分 別 為 80%( 台 灣 欒 樹 )70%( 瓊 崖 海 棠 ) 與 55%( 阿 勃 勒)，藉由風洞試驗中的樹後風速剖 面率定而得之樹冠特性參數可以供 未來相關 CFD 模擬之重要參考與依 據。
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附 錄 五 第 二 次 專 家 座 談 會 議 意 見 與 回 應
第二次專家座談會議 簽到單
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參 考 文 獻
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植栽降低都市環境強風之效果評估與設計原則研究 出版機關：內政部建築研究所
電話：（02）89127890
地址：新北市新店區北新路 3 段 200 號 13 樓 網址：http://www.abri.gov.tw
編者：陳建忠、方富民、鍾政洋、張人傑、李冠儒 出版年月：108 年 12 月
版次：第 1 版
ISBN：978-986-5448-40-0