Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/45842
標題: Vegetation recovery and landscape change assessment at Chiufenershan landslide area caused by Chichi earthquake in central Taiwan
作者: Lin, C.Y.
林昭遠
Chuang, C.W.
Lin, W.T.
Chou, W.C.
關鍵字: Landslide
Remote sensing
Vegetation index
Vegetation recovery
neural-network
forest
index
canopy
classification
diversity
imagery
savi
ndvi
spot
期刊/報告no:: Natural Hazards, Volume 53, Issue 1, Page(s) 175-194.
摘要: This study discusses vegetation recovery and land cover change with reference to the Chiufenershan landslide, a major disaster caused by the Chichi earthquake, 21 September 1999. Image classification technology, landscape indicators from multi-temporal remotely sensed data and a field survey provide the data. Image differencing methods and threshold values coupled with pre- and post-quake satellite images were used. Multi-temporal images in combination with various vegetation indices were drawn on to classify land cover patterns and discuss differences and suitability of indices. Landscape indicators and field investigations fed into an investigation of vegetation recovery and landscape change. The study results show that the best image classification system is original wavebands coupled with a cropping management factor index (CMFI). The land cover analysis shows that areas of forest and grass are increasing and areas of landslide are decreasing. From the field investigation, because the left and right sides of the landslide area were not disturbed by the earthquake, their calculated similarity index is the highest (30.08%). Miscanthus floridulus is the most dominant pioneer plant at the landslide collapse area with an importance value index (IVI) of 63.6%.
URI: http://hdl.handle.net/11455/45842
ISSN: 0921-030X
文章連結: http://dx.doi.org/10.1007/s11069-009-9421-0
Appears in Collections:水土保持學系

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