冰冻雪灾对黄山区毛竹林的损害及影响因子

Damage of Frost and Snow Disaster to Moso Bamboo Stands and the Influencing Factors in Huangshan,Anhui Province

研究安徽省黄山区2008年1月冰冻雪灾对毛竹林的损害及影响因子。结果表明:此次雪灾对毛竹林破坏严重,各类受损竹比例达45.8%,其中翻蔸竹13.9%,断裂竹9.4%,对竹林生态系统影响较大。从毛竹生物学影响因子看,年龄和胸径对受灾程度的影响不大;而从各林地状况因子与毛竹受灾程度的关系看,海拔、地形、坡向和立竹度对毛竹受损率影响显著,T检验P值分别为0.008,0.000,0.045和0.052,并呈现出不同的主要受损类型,经营状况和树种组成的影响程度不明显。

The damage of frost and snow disaster to moso bamboo stands caused in Jan.2008 was studied together with the influencing factors.The investigated spots were in Huangshan county in Anhui Province where was destroyed severely by this disaster.The result showed that this frost and snow disaster had damaged the bamboo stands greatly.In all the researched moso bamboos,the ratio of damaged Phyllostachys edulis reached 45.8%,and the damaged seriously style such as rhizome-upturned,broken and cracked bamboo ratio reached 13.9% and 9.4% respectively.In the influencing factors,the biological ones：DBH and age had small relatively effects on damaged extent.For the factors of bamboo stand conditions,six factors were studied.The altitude,landform,slope direction and bamboo density had significant influence on the damaged extent and the P（T-test）had arrived to 0.008,0.000,0.045 and 0.052 respectively,and the main destroyed type were different.However,management and tree species were not significant.