崩塌地植生粒劑覆蓋與微氣候之相關研究

Correlation between Plant Coverage of Vegetation Pellet and Micro-climate in the Landslide Area

陳昶甫(Chen Chang-Fu)

指導教授 ： 唐琦

國立屏東科技大學/工學院/水土保持系所/碩士(2021年)

https://doi.org/10.6346/NPUST202100358

摘要

本研究擇定嘉義縣阿里山鄉樂野村境內一處崩塌地中坡面及下坡面作為植生粒劑投擲試驗區，同時設置自動觀測氣象站，觀測包括：氣溫、相對溼度、風速、風向及地溫等項目，以了解崩塌地試區近地面之微氣候特性，並藉拍攝相片配影像分析軟體分析植生粒劑對裸露坡面之覆蓋率變化。研究結果可知：植生粒劑投擲於崩塌地後之覆蓋率與時間二者具有顯著相關之曲線遞增趨勢。崩塌地試區最高及最低時平均氣溫分別為26.2℃及 11℃，相對溼度均維持在 70%以上，地表土層於深度 0.05 m 處之最高及最低時平均地溫分別為 30.7℃及 12.4℃。植生粒劑於夏季期間投擲作業後，一週即有發芽現象，2 個月後之覆蓋率可增至約 30%；於春季期間投擲，因粒劑吸收雨水，促進覆蓋率可達 40%以上。

關鍵字

崩塌地 ； 植生粒劑 ； 植生覆蓋率 ； 微氣候

並列摘要

The study mainly realized the microclimate characteristics and airdropped the vegetation pellet to recover the canopy on a landside area. The plot was located at the middle and downstream slopes of a landslide area in Leye Village,Alishan Township, Chiayi Country. The meteorological characteristics illustrated by air temperature, relative humidity, wind speed, wind direction and earth temperature nearby the landslide area, and all the observations were measured by an automatic meteorological station. To evaluate vegetation coverage which calculated by Image J analysis software by the photography from vegetation pellet airdropping plot. The maximum and minimum hourly mean air temperature were in 26.2℃ and 11℃, maximum and minimum hourly mean earth temperature underground 0.05m depth were in 30.7℃ and 12.4℃, mean relative humidity exceeded 70 %, respectively. The vegetation pellet began to germinate one week after airdropping operation in summer season, and vegetation coverage could reach 30% after 2 months. Since rainfall could be absorbed by the vegetation pellet in spring season, which was good for increasing vegetation coverage to 40% after 2 months.

並列關鍵字

Landslide ； Vegetation pellet ； Vegetation coverage ； Micro-climate

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