2012-06-192024-05-17https://scholars.lib.ntu.edu.tw/handle/123456789/683815摘要：98年莫拉克颱風，雨勢集中降雨時程延長，造成林務局南投處、嘉義處、屏東處及臺東處轄內國有林崩塌情形嚴重，並衍生嚴重土砂災害，依農林航空測量所於99年11月印發之調查報告顯示，災後崩塌面積增加為3萬2,923公頃，計新增崩塌面積為1萬9,137公頃。 為瞭解該等崩塌後衍生之土砂殘留於國有林地內之數量，以及對下游是否產生災害性之影響，本計畫將彙整判釋國有林崩塌地基本資料、分析土石方之變化情形、並以旗山溪、荖濃溪、太麻里溪、阿里山溪等4集水區為例，進行國有林殘留土砂二次災害潛勢評估及辦理研習班等工作。<br> Abstract: The intense rainfall and long duration of Typhoon Morokot in 2009 triggered massive landslides and brought catastrophic damage to national forests in Nantou, Chiayi, Pingtung and Taitung Forest District of Forestry Bureau. According to the research report of Aerial Survey Office of Forestry Bureau printed in November 2010, the total landslide area is 32,923 ha and 19,137 ha is an additional increase after Typhoon Morokot. In order to understand the amount of sediments deposited in national forests and the severity of the threat to downstream areas, four tasks would be accomplished within this project. The tasks include (1) identification of landslide inventory maps, (2) estimation of sediment changes, (3) potential analysis of the sediments deposited in national forests and sediment-induced secondary disaster, taking Qishan River, Laonong River, Taimali River, and A-Li-Shan River as examples, and (4) a workshop.崩塌地國有林土砂二次災害landslidenational forestssediment-induced secondary disaster