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論文中文名稱:猴山岳邊坡樹木生長方向的統計分析 [以論文名稱查詢館藏系統]
論文英文名稱:Statistical Analysis of Tree Growth Directions at a Landslide Site near the Mt. Houshanyue Hiking Trail [以論文名稱查詢館藏系統]
院校名稱:臺北科技大學
學院名稱:工程學院
系所名稱:土木與防災研究所
畢業學年度:98
出版年度:99
中文姓名:鐘雅蘭
英文姓名:Ya-Lan Chung
研究生學號:97428062
學位類別:碩士
語文別:中文
口試日期:2010-07-19
論文頁數:112
指導教授中文名:陳偉堯
口試委員中文名:林主潔;張哲豪;楊元森
中文關鍵詞:雷射掃描坡地災害方向統計
英文關鍵詞:Laser ScannerSlope disastersDirectional Analysis
論文中文摘要:台灣位處亞熱帶氣候及環太平洋地震帶,地理位置特殊,每到梅雨、颱風季節加上氣候變遷的因素更是豪雨不斷,土石流、邊坡滑動等天然災害容易發生,也因此造成生命財產的損失。本研究以猴山岳地區之345kV-039鐵塔崩塌處為研究區域,首先將研究區域利用雷射進行三維掃描,利用掃描所得到的結果,將研究區域內可辨識的樹幹挑出。利用樹木有向上生長的特性,將所挑出的樹幹進行生長軌跡及方向統計分析,了解樹幹生長的方向是否有特定性。此外,並蒐集民國91年至97年間航照圖、颱風及降雨資料進行統計分析。降雨資料統計顯示,猴山岳地區在近年來降雨型態變為密集且降雨驟增,因此造成了民國97年的大規模崩坍情形發生。
本研究將雷射掃描結果的樹幹挑出並做影像存檔,影像的存檔可供後續研究比對參考。挑出的樹幹利用點雲資料進行生長方向的統計分析,結果顯示,樹幹生長方向是非隨機而是有特定方向的,並根據角度統計發現,上邊坡樹幹在五個階段統計結果都是朝向北方方向生長,統計角度95%信心區間分別為-13°~25°、-40°~38°、-33°~26°、-48°~18°及-28°~37°,下邊坡樹幹在六階段統計結果多是朝西南的方向生長,統計角度95%信心區間分別為220°~245°、227°~265°、228°~268°、206°~243°、224.79°~270.55°及200°~256°,因此根據研究結果了解利用樹木的生長方向來做邊坡滑動情形的參考是可行的,可提供未來坡地防災的參考依據。
論文英文摘要:Taiwan is located in the Pacific Rim earthquake belt and the sub-tropical climate zone. Its special geographical environment is vulnerable to natural disasters, notably typhoons, plum rain, and climate change. This study uses a terrestrial laser scanner to collect the data of tree trunks and conducts the regression analysis of tree growth directions at the landslide site near the Mt. Houshanyue hiking trail. Moreover, the study collects the climate data and satellite imagery (from 2002 to 2008) for statistical analysis. The statistical data of rainfall reveals that in recent years, intense rainfall has become more and more common which results in the large-scale collapse in the Mt. Houshanyue hiking trail in 2008.
This study collects the point cloud data of trees from laser scanning for archival purposes. The image files can be used for further studies. By analyzing the point cloud data of growth directions of the collected trees, it shows that the growth directions of trees are not random but with specific orientations. According to the statistical data from five statistical stages, the trees on the upper slope indicate a turn toward the north. The 95% confidence intervals are as follows: -13°-25°, -40°-38°, -33°-26°, -48°-18° and -28°-37°. According to the statistical data from six statistical stages, the trees on the lower slope mostly indicate a turn toward the southwest. The 95% confidence intervals are as follows: 220°-245°, 227°-265°, 228°-268°, 206°-243°, 224.79°-270.55° and 200°-256°. Therefore, the study result indicates that the growth directions of trees can be used to study landslide conditions while providing a database for disaster prevention studies.
論文目次:中文摘要 i
英文摘要 iii
致 謝 v
目 錄 vi
表目錄 viii
圖目錄 ix
第一章 緒論 1
1.1 研究動機與目的 1
1.2 研究區域 1
1.3 研究架構 2
第二章 文獻回顧 4
2.1 雷射掃描介紹 4
2.2 樹幹模擬 5
2.3 空間分析 10
第三章 研究方法 12
3.1 研究地區背景介紹 12
3.2 雷射掃描區域及成果 14
3.3 RiScan軟體簡介 18
3.4 樹幹建模及分析 20
3.5 樹幹點雲分析程式介紹 20
3.6 崩塌地判識分析 22
第四章 歷年航照與颱風歷史災害分析 24
4.1 猴山岳地區航照圖分析 24
4.2 猴山岳地區降雨及颱風歷年統計 27
4.3 猴山岳地區歷史災害記錄 41
4.4 猴山岳地區91年至94年高程變化 45
第五章 猴山岳研究區域樹幹影像記錄 46
5.1 上邊坡樹幹影像記錄 46
5.2 下邊坡樹幹影像記錄 60
第六章 空間分析及探討 72
6.1 上邊坡樹幹生長方向空間統計分析 72
6.1.1 上邊坡樹木方向分析-隨機分佈 85
6.1.2 上邊坡樹木方向分析-角度區間 86
6.2 下邊坡樹幹生長方向空間統計分析 90
6.2.1 下邊坡樹木方向分析-隨機分佈 103
6.2.2 下邊坡樹木方向分析-角度區間 104
第七章 結論與建議 109
7.1 結論 109
7.2 建議 110
參考文獻 111
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論文全文使用權限:同意授權於2011-08-24起公開