The damage of frozen rain and snow on forests of Xianju county was investigated by setting 44 sample plots in 2 state- owned forest farms located in 4 towns. It was found that in the areas of altitude higher than 500 m, the stem broken and whole tree fell down were not significantly related with altitude. The stem broken and whole tree fell down of China fir, pine and broadleaved trees were significantly different. The loss rate of stem broken, whole tree fell down and basal diameter of the studied forest trees was pine＞broadleaved tree species＞China fir. The basal area loss rate of top broken trees was China fir＞broadleaved tree species＞pine. The basal area loss rate of twig broken trees was broadleaved tree species＞pine＞China fir. The preservation rate of basal area of undamaged trees was China fir＞pine＞broadleaved tree species. Whole tree fell down is usually occurred in site with shallow soil layer. Stem broken is the common damage in site with thick soil layer. There is no significant difference between the damage on trees distributed in different slopes and aspects, however, due to the concrete topographic conditions, the damages of trees at different sites were significantly different.%2008年3～4月,在仙居县4个乡镇2个国有林场设置了44块标准地对林木受雨雪冰冻灾害情况进行调查,结果认为:在海拔500 m以上,雨雪冰冻造成林木腰折、翻蔸与海拔高程无显著相关,杉类、松类、阔叶类各树种间出现腰折、翻蔸有显著差异;腰折、翻蔸木胸高断面积损失率为松木＞阔叶树＞杉木,断梢木胸高断面积受害率为杉木＞阔叶树＞松木,折枝木胸高断面积受害率为阔叶树＞松木＞杉木,正常林木胸高断面积保存率为杉木＞松木及阔叶树.土层浅薄处林木多出现翻蔸,土层深厚处林木多出现腰折.雨雪冰冻对不同坡向、坡位的林木危害无显著差异,但由于微地形条件,不同地块的林木受害程度差异较大.
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