CAJ | 학술논문

通过测定不同胸径无患子人工林林冠层3个部位的含水率，分析不同胸径林分不同部位可燃物的失水率，定量分析林冠层的防火效应。结果表明，不同胸径无患子人工林林冠层含水率差异极显著，且胸径20 cm的无患子人工林林冠层3个部位的枝叶含水率值均为最大；新鲜枝叶在烘干过程中其质量及失水速率与烘干时间分别呈指数回归、二项式回归关系，0～6h内随着烘干时间的增加，3种胸径3个部位枝叶的质量都逐渐降低，6h后随着烘干时间的继续延长其枝叶的质量均趋于稳定，8h后质量不变，此时失水率也达到稳定状态，且无患子人工林林冠层上部和中部以胸径15 cm的新鲜枝叶失水速率最大，林冠层下部则以胸径10 cm的新鲜枝叶失水速率最大。
통과측정불동흉경무환자인공림림관층3개부위적함수솔，분석불동흉경림분불동부위가연물적실수솔，정량분석림관층적방화효응。결과표명，불동흉경무환자인공림림관층함수솔차이겁현저，차흉경20 cm적무환자인공림림관층3개부위적지협함수솔치균위최대；신선지협재홍간과정중기질량급실수속솔여홍간시간분별정지수회귀、이항식회귀관계，0～6h내수착홍간시간적증가，3충흉경3개부위지협적질량도축점강저，6h후수착홍간시간적계속연장기지협적질량균추우은정，8h후질량불변，차시실수솔야체도은정상태，차무환자인공림림관층상부화중부이흉경15 cm적신선지협실수속솔최대，림관층하부칙이흉경10 cm적신선지협실수속솔최대。
The water-holding properties of canopy of Sapindus mukorossi plantation with different DBH (diame-ter at breast height)were measured to analyze the dehydration rate of different part fuel,and do quantitative analy-sis of fireproof effect of canopy.The results showed that,in Sapindus mukorossi plantation,canopy′s water-holding properties had significant differences in different DBH stands.When the DBH of Sapindus mukorossi plantation was 20 cm,moisture content of canopy reached maximum.In the process of fresh branches drying,the relationship of branch′s weight and drying time was exponential regression,and branch′s water loss rate and drying time showed binominal regression relationship.In the first 6 h,the weight of all treated branches was decreased with drying time continuing.After 6 h,the value tended to be stable.After 8 h,the weight of branches and water loss rate had no change anymore.In the upper and middle portion of plantation canopy,those branches with 15 cm DBH showed the highest water loss rate,while in the below portion,those with 10 cm DBH reached were highest.