頁籤選單縮合
| 題 名 | 九份二山震災崩塌地復育之長期監測與評估=Long-term Monitoring and Assessment of Restoration for the Earthquake-induced Landslide at the Chiufanershan Area |
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| 作 者 | 林文賜; 黃碧慧; 呂雯惠; | 書刊名 | 水土保持學報 |
| 卷 期 | 53:2 2023.12[民112.12] |
| 頁 次 | 頁3165-3174 |
| 分類號 | 436.2 |
| 關鍵詞 | 震災崩塌地; 自組特徵映射分類法; 崩塌地植生恢復; Earthquake-induced landslide; Self-organizing map; Landslide vegetation recovery; |
| 語 文 | 中文(Chinese) |
| 中文摘要 | 集集大地震(1999/9/21)發生至今超過二十年,震災造成台灣中部山區崩塌裸露嚴重,因此 崩塌地變遷及植生復育情形,實有探討之必要性。本研究以南投縣中寮鄉與國姓鄉交界之九份 二山為樣區,藉由多時期 SPOT 衛星影像結合自組特徵映射分類法判釋崩塌區位變遷、及評估 崩塌地植生恢復情形,作為該區後續災害治理之參考及大自然對崩塌地復育能力之探討。分析 結果顯示,在地震初期(1999/9/27)萃取之崩塌地面積為214.53公頃,震災二十年後(2020/2/23)崩 塌地面積為28.39公頃,復原的面積為186.14公頃,崩塌地植生恢復率為86.77%。崩塌復原區位 主要為崩塌面之堆積區位,因土壤鬆軟有利於植生入侵或殘存植生恢復生長,而未復原區位為 崩塌面之崩落區位,因岩盤裸露較不利於植生入侵。九份二山崩塌地在長達二十餘年之復育, 即使遭受十多場颱風豪雨之侵襲,裸露地表隨著植生入侵或殘存植生恢復而逐年復原,顯示大 自然本身有極佳的環境復育能力。 |
| 英文摘要 | It has been more than 20 years since the Chi-Chi Earthquake (September 21, 1999), which caused serious landslides in the mountainous areas of central Taiwan. Therefore, it is necessary to investigate the changes of the landslides and the restoration of the vegetation. This study used multi-period SPOT satellite imagery combined with the Self-Organizing Map to evaluate the changes of the landslide area and the vegetation recovery at the Chiufanershan area. The results of the assessment can be used as a reference for the subsequent disaster management in the area and as an environmental sustainability issue for nature ability to restore the vegetation of the landslides. The analysis results showed that the area of the landslide extracted at the beginning of the earthquake (1999/9/27) was 214.53 hectares, and the area of the landslide twenty years after the earthquake (2020/2/23) was 28.39 hectares, a decrease of 186.14 hectares. The calculated vegetation recovery rate at landslides was 86.77%. The recovered landslide was located in the area of the collapse surface of the pile because of the soft soil which was favorable for the invasion of vegetation or the regeneration of residual vegetation for a long time. The unrecovered areas were located at the fallout areas of the landslide face, where the exposed rocks were less favorable for vegetation invasion. During the more than 20 years of vegetation recovery in the area, even attacked by typhoons and heavy rains, the exposed surface recovered year by year with the vegetation invasion or residual vegetation recovering from the collapse surface, indicating that nature itself has excellent vegetation recovery ability. |
本系統中英文摘要資訊取自各篇刊載內容。