森林火災危險度預測系統之研究

Study on the Predicting System of Forest Fire Danger Rating in Taiwan

林朝欽(Chau-Chin Lin)

《林業試驗所研究報告季刊》 10卷3期 (1995/09) Pp. 325-330

https://doi.org/10.7075/BTFRI.199509.0325

摘要

為探討以瑞典使用之Angstorm Index計算式測定森林火災危險度之可行性，以提供重建台灣地區森林火災危險度模式參考，本研究選定羅東林區太平山（土場）、明池及虎字碑逐日記錄濕度、濕度，並分析1982-1991年間森林火災發生情形加以比較。結果顯示：台灣地區森林火災與溫濕度變化之關係在相對濕度較低時具顯著關係；另引用瑞典之森林火災危險指數計算式尚難提供當日危險度之用，但累積五至七日之資訊仍可作為短期間火災危險預測參考。

關鍵字

溫度 ； 相對濕度 ； 森林火災危險度

並列摘要

Angstorm Index, a Swedish forest fire danger system, was tested to examine the possibility of using is as a reference for rebuilding forest fire danger system in Taiwan.
Three forest sites in northern Taiwan were selected and daily temperature and relative humidity records from October 1993 to September 1994 were used. Meanwhile, chronic fire records during 1982 to 1991 were analyzed to find the relationship between fire frequency and the weather in these past 10 years.
The results showed that:
1. Forest fire frequency significantly related with lower relative humidity.
2. Angstrom Index could fit the tested areas as a reference of fire danger rating only in weekly announcement. For island wide usage more tested sites are needed to modify the index system.

並列關鍵字

temperature ； relative humidity ； forest fire danger rating