对小兴安岭低质林的生物多样性进行调查,以小兴安岭铁力林业局卫东林场的原始阔叶红松林生物多样性作为对照,运用主成分分析的方法,对不同改造方式低质林的试验区生物多样性数据进行综合评析,并分析试验区植被恢复效果与影响因素之间的关系.研究结果表明:恢复时间和改造方式对生物多样性恢复与分布起主导作用,横山皆伐带10m带宽样地、顺山皆伐带10m带宽样地与择伐带采伐强度41％的样地生物多样性恢复效果最好,横山皆伐带和顺山皆伐带的8m带宽样地与择伐带采伐强度55％的样地生物多样性恢复效果次之.%A survey was conducted to investigate the biodiversity of low-quality stands in Lesser Xing' an Mountains using original broad-leaved Korean pine forest in Tieli Forestry Bureau as the control. The biodiversity data of the low-quality stands after different measures of transformation in every experimental area were comprehensively evaluated by principal component analysis, and the relationship between vegetation restoration and influence factors were analyzed. Results show that restoration time and transformation measures play an important role in restoration and distribution of biodiversity. The best biodiversity restoration effects were observed in the sample plots after strip clear cutting in horizontal zone with strip width of 10 meters, the plots after strip clear cutting in vertical zone with strip width of 10 meters, and the plots with cutting intensity of 41% , while better restoration effects were found in the plots with strip width of 8 meters both in horizontal zone and vertical zone, as well as the plots with cutting intensity of 55%.
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