北京市八达岭林区生态修复对植被多样性的影响

Effects of Ecological Rehabilitation on Plant Diversity in the Badaling Forest Area of Beijing City

通过比较封山育林、抚育和更新措施3种样地与对照样地(未采取措施)植被多样性的差异,分析了八达岭林区不同水土保持生态修复措施在植被恢复中的作用。结果表明,总体上采取措施的样地植被多样性大于对照样地;对于灌木而言,对照样地与其它3种采取措施的样地存在显著差异,多样性指数小于采取措施样地,而封山育林、抚育和更新三者之间无显著差异;对于草本而言,对照样地与其它3种之间无显著差异;均匀度变化与多样性指数基本一致,生态优势度变化与其几乎相反。实施水土保持生态修复,植被多样性增加。

By comparing the differences of plant diversity between artificial measures （enclosed land for reforestation, thinning and renewal） and contrast area （natural way）, the effects of different measures for soil and water conservation ecological rehabilitation in vegetation rehabilitation are analyzed. It is showed that the diversity by artificial measures is higher than natural diversity. Variance analysis and multiple comparisons show that for shrubs, the effect between artificial measures and natural ways has significant difference. The diversity index for artificial measures is higher than that for natural ways, but the measures of enclosed land for reforestation, thinning and renewal have no significant difference; and for herbs, the effect between artificial measures and the natural way has no significant difference. The change in evenness is almost consistent with that in the diversity index and ecological dominance is almost opposite. In short, soil and water conservation ecological rehabilitation may increase plant diversity.