中文摘要：

国内外关于雪灾对生态脆弱区的生态系统组成及功能破坏影响的研究较少，并且相关研究还主要停留在定性阶段，定量研究生态脆弱区的雪灾对林木破坏的影响理论和实践意义重大。综合运用样方法和样带法对生态脆弱区——九华山风景区林木受灾情况进行调查，对不同海拔、坡向、竹龄、群落重要值和距游径不同距离的100个样方和40个样带共计14000m^2的毛竹（Phyllostachys pubescens）损坏情况进行了量化分析。结果显示毛竹损坏率和其立地条件有以下关系：阴坡〉阳坡；高海拔〉低海拔；毛竹损坏率和它在群落中的重要值呈正相关，毛竹纯林〉混交林；损坏毛竹平均胸径为（9．8±1．3）cm，损坏主要集中在幼龄阶段的毛竹；距游径4m内的毛竹损坏程度比4m外显著p〈0．05）。根据以上结果，提出了灾后营林造林的原则和雪灾对森林生态系统影响量化研究的几个重要方向。

英文摘要：

Aims Few studies have examined snow damage on ecosystem composition and function in ecologically fragile areas, and most studies were qualitative. Therefore, quantitative study on this topic has important theoretical and practical significance.Methods We used quadrat and transect methods to investigate snow-damaged forest in Jiuhua Mountain, China and analyzed damage to Phyllostachys pubescens in different locations and with different biological characteristics.Important findings Preliminary analysis revealed that the extent of damage on P. pubescens was related to its location： shaded slope 〉 sunny slope and high latitude 〉 low latitude. The damage to P. pubescens was positively correlated to its importance value in the community, that is, pure forest 〉 mixed forest. The average diameter at breast height （DBH） of damaged P. pubescens was （9.8 ± 1.3） cm, and most damage occurred in the juvenile stage. Individuals within 4 m from roads were damaged significantly more than individuals further away （p 〈 0.05）. We proposed principles for forest management and forestation after snow damage.