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標題: | 都市林風害評估之研究-以金門莫蘭蒂風災為例 Evaluation of Wind Damage on Urban Forest: A Case Study of Meranti Storm in Kinmen |
作者: | Kai-Hsun Wang 王楷勛 |
指導教授: | 邱祈榮(Chyi-Rong Chiou) |
關鍵字: | 都市林,風災,相關性分析,受損分級,金門, urban forest,wind damage,correlation analysis,damage classification,Kinmen, |
出版年 : | 2017 |
學位: | 碩士 |
摘要: | 2016年9月15日莫蘭蒂颱風登陸金門,在金門造成嚴重的風災,行道樹及森林均受到嚴重的損傷,金門多年的綠化成果頓時滿目瘡痍。本研究將金門地區之都市林分為行道樹及林區兩個部分,分別為行道樹和林區建立風災的受損調查方式及風害分級標準。並將此風害分級資料與其它研究的調查資料進行相關性分析,企圖找出林木受損的相關性因子。
行道樹使用迴歸分析發現路樹周圍開闊地的比率是影響行道樹受損最重要的因子。樹種經單因子變異數分析後發現火焰木、黃槐、銀樺和豔紫荊在此次風災的受損情形較嚴重,而水黃皮、光臘樹及台灣欒樹則較輕微,建議受損輕微的樹種可做為補植樹種。株數超過1,000株的樟樹、木麻黃、白千層及小葉欖仁經二因子變異數分析發現:細徑的樟樹較粗徑的易受損;細矮的木麻黃較粗高的易受損;矮的白千層較高的易受損;高的小葉欖仁較矮的易受損。不同樹種針對易受損的樹高或胸徑分等,可以採取修枝或是上支架等方式減少風災的受損。 林區中發現受松材線蟲感染的林木在風災過後較未感染的林木更容易受損。而林區林木風害圖的空間分析只能看出風倒木的分布位置,背後的原因還需要其他資料輔助才能深入探討。 September 15, 2016 Meranti Typhoon landing Kinmen, causing serious winds damage in Kinmen, street trees and forests are seriously damaged, years of greening achievement suddenly devastated. In this study, the urban forest of Kinmen area is divided into two parts: street trees and forest areas. The damage investigation methods and grading standards are established for street trees and forest areas. And the damage classification data and other research data for correlation analysis, is in an attempt to identify the forest damage related factors. The use of regression analysis of the street tree reveals that the ratio of open land around the road tree is the most important factor affecting the damage to the street tree. Species after one-way analysis of variance found that Spathodea campanulata, Cassia surattensis, Grevillea robusta and bauhinia×blakeana Dunn were severely damaged. Pongamia pinnata, Fraxinum griffithii and Koelreuteria henryi due to minor damage, it is recommended as a replanting tree species. More than 1,000 strains of trees Cinnamomum camphora, Casuarina equisetifolia, Melaleuca leucadendra and Terminalia boivinii by two factor analysis of variance found: Small diameter of the Cinnamomum camphora is more vulnerable to damage; fine short Casuarina equisetifolia is easier than taller to damage; short Melaleuca leucadendra is susceptibility to damage; high Terminalia boivinii is vulnerable to damage. Different tree species with specific tree height or DBH classification, can take pruning or stent on the way to reduce the damage to the wind. In the forest areas, we found that the pine trees were infected by nematodes, is more susceptible to damage than the uninfected pine trees after the storm. The spatial analysis of each tree damage map can only see the distribution of windthrow, the reasons behind need other information to help in-depth discussion. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/68719 |
DOI: | 10.6342/NTU201703756 |
全文授權: | 有償授權 |
顯示於系所單位: | 森林環境暨資源學系 |
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