不同整地方式对小兴安岭低质林生物多样性的影响

摘要

The biodiversity of low quality forest in Xiaoxing＇anling mountain was investigated a year after its transformation. With the principal component analysis method, the initial ecosystem condition of each test area under different scarification methods was analyzed compared with the original broad-leaved Korean pine in Weidong forest farm of Xiaoxing＇anling mountain. The data of both the transformed plot and reserved plot in test area was compared. The results of data analysis indicate that ： the low-quality forest transformation has a stimulative effect on biological diversity of tree layer, but has a negative effect on herb layer. The negative effect of tidying the soil by uncovering the grass on the biological diversity of herb layer is lower than that of dark hole. The research can provide a basis for scarification method selection of forest biological diversity restoration.%通过对小兴安岭低质林改造后第一年样地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作对照，运用主成分分析方法，对不同整地方式下各试验区生态系统初始情况对比评析，并将试验区内改造样地与保留样地的数据进行对比分析。结果表明：低质林改造过程中对乔木层生物多样性恢复有促进作用，对草本层生物多样性恢复造成负面影响；揭草皮子整地方式对草本层生物多样性的负面影响低于暗穴整地方式。研究结果为森林生物多样性恢复的整地方式的选择提供依据。