次生林雪/风害干扰与树种及林型的关系

以中国科学院沈阳应用生态研究所清原森林生态试验站的次生林为研究对象，分析了不同树种、林型之间遭受雪/风害时的差异. 结果表明:①不同树种受雪/风危害在数量上有所差异，以枫桦受害最重，假色槭最轻；不同树种折断受害类型和被压弯受害类型的百分比差异显著. ②雪/风灾害对林木的破坏与树木的大小有关，其中粗大林木(即冠幅较大)易受折断的危害；而低矮、小径级的林木更趋向于被压弯. ③不同林型遭受灾害的程度不同，以枫桦为优势种的林型与以假色槭为优势种的林型其受灾总量百分比之间差异显著. 

Relationships between snow/wind damage and tree species as well as forest types in secondary forests

In order to evaluate the relationships between snow/wind damage and tree species as well as forest types, secondary forests in the Qingyuan Forest Ecological Experiment Station of the Institute of Applied Ecology, Chinese Academy of Sciences (CAS), severely damaged by snow/wind, were investigated. Significant differences of snow/wind damage were observed among species. Betula costata exhibited the highest overall damage and Acer pseudo_sieboldianum the lowest. Types of damage (snapping and bending) by snow/wind also were significantly different among species. Taller trees with greater DBHand larger crown were more likely to be snapped, while shorter ones with smaller DBH were more likely to be bent. The relationships between stand types, defined by an importance value (IV), and snow/wind damage showed that stands with B.costata as the dominant species were significantly different in the amount of wind damage sustained from those stands with A. pseudo_sieboldianum as the dominant tree species. 