| 研究生: |
林瑋佑 Lin, Wei-You |
|---|---|
| 論文名稱: |
低地人工浮島之水質淨化與生態功能 Water quality purification and ecological functions of artificial floating islands in coastal area |
| 指導教授: |
王筱雯
Wang, Hsiao-Wen |
| 學位類別: |
碩士 Master |
| 系所名稱: |
工學院 - 自然災害減災及管理國際碩士學位學程 International Master Program on Natural Hazards Mitigation and Management |
| 論文出版年: | 2017 |
| 畢業學年度: | 105 |
| 語文別: | 英文 |
| 論文頁數: | 83 |
| 中文關鍵詞: | 人工浮島 、水質淨化 、結構穩定 、生物利用 、與水共生 |
| 外文關鍵詞: | Artificial floating island, water quality improvement, structure stability, ecological role, life with water |
| 相關次數: | 點閱:101 下載:7 |
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台灣四面環海,為典型的島嶼型國家,因此國家發展與海洋環境息息相關。然而,長期以來濱海地區的過度開發卻引發許多許多危機,包括地層下陷、水質污染、生態系統與棲息地遭到破壞、外來種入侵、土壤鹽化與海洋資源消耗等。有三分之二的國土低於海平面的荷蘭,與我國有著相似的海岸環境,其長期累積下豐富的治水經驗亦具有相當的參考價值。荷蘭1950年代經歷北海大洪水的災害,造成近二千多人死亡,改變了荷蘭人數百年來與水爭地的作法,從原先以築堤、築壩等大型防堵工程為主要治水方向,轉而以更宏觀、永續的觀念與洪水共生。
建造人工浮島是這個概念實踐的例子之ㄧ,在本研究中,我們設置了兩座乾式浮島於台南運河以及九座濕式浮島於台南市歷史水景公園我們的研究從人工浮島「結構穩定性」、「生物利用空間營造」及「水質改善」的三個面向,本研究設計現地調查和水槽試驗取得資料。就水質而言,本研究發現人工浮島在覆蓋率34.5%時對總磷擁有最高的去除量,但覆蓋率11.5%人工浮島擁有最高的去除效率。針對水景公園濕式人工浮島之生物調查發現鳥類平均25.6分鐘使用ㄧ次,魚類平均15秒使用人工浮島一次,每平方公尺一天大約生長62.2公克的附著生物。
針對三種面向的調查發現,人工浮島確實可以提供多種功能包括:水質淨化、提供植物和生物生長的穩定結構、提供生物棲地。考慮到建造時間、維護管理方便性及機動性,濕式人工浮島對此二研究區域是較適合的。
In the past hundreds years, engineering concepts were at the forefront of lowland flood management. But there was a major shift in thinking in the 1950’s after storms from the north ocean proved too much for the engineering based flood management infrastructure, and created a disaster event leaving cities in ruin. A holistic approach towards water management, that takes into consideration concepts such as “living with water” and allows for adaptation, are needed in order to create sustainable water management plans. Construction of artificial floating islands (AFI) is an example of implementing such concepts. In this research, we set up two dry type AFIs in Tainan canal and nine wet type AFIs in waterview park. Our research focuses on three aspects of AFI: AFI impact on water quality, AFI structure stability and the ecological role AFI’s play. We designed field surveys and tank experiments in order to obtain quantitative data on these three topics. In terms of water quality, we found that AFIs can has a better removal amount of total phosphorus in coverage 34.5%. And AFIs can has a better removal efficiency of TP in 11.5% coverage. Our ecological observations found that the frequency of bird use was once every 25.6 minutes, and fish use was once every 15 seconds. There were about 62.2 grams of attached organisms for each one square meter of AFI per day in the waterview park. Our research found that AFIs can provide several functions including water quality purification, providing a stable structure for plants and aquatic creatures, and a variety of habitat space. Considering the construction time, maintenance and management needs, we found that our wet type AFI is more suitable for these two study areas.
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校內:2019-07-12公開