摘要
在森林防火紧要期,用自行设计的装置对藏柏(Cupressus torulosa)进行了不同温度、时间作用下的树干耐火性试验,用含4%红四氮唑的溶液对高温作用后的树干韧皮部进行了染色,经勾绘、扫描后用Photoshop软件将死亡的韧皮部处理成易于计算机识别的纯色,用Visual Basic 6.0编写的程序计算了树干韧皮部的死亡率,建立了藏柏树干韧皮部死亡率与树干直径、受热温度、受热时间的关系模型。分析表明,影响藏柏树干耐火性的因子依次为受热时间、受热温度、树干直径。根据藏柏树干的耐火性提出了相应的森林消防措施。
Fire resistance experimentations of middling size Cupressus torulosa stem were tested under different temperature and time witb experimental equipment designed by the authors during the highly dangerous period of forest fire. The mortality rate of stem phloem was calculated with a program developed by the authors use Visual Basic 6.0 software after the phloem of samples were soaked with 4% 2,3,5-triphenyhetrazolium chloride （TTC） solutions, painted and scanned the distribution map of mortal and living phloem, purified the map color with Photoshop software. The mortality model of phloem was established and the correlation factors of the model included the diameter of stem, temperature, heating time and the mortality rate. The results showed that the main factors that influenced the fire resistance of C. torulosa stem were arranged in order of heating time, temperature, diameter of stem. According to the fire resistance of C. torulosa stems we commend the forest fire protection measures respectively.
出处
《福建林学院学报》
CSCD
北大核心
2009年第1期65-68,共4页
Journal of Fujian College of Forestry
基金
昆明市科技局重点项目(06H114135)
云南省青年基金资助项目(2003C0021Q)
国家科技支撑项目(2006BAD04B05)
关键词
藏柏
韧皮部
耐火性
Cupressus torulosa
phloem
fire resistance
