[Effects of thinning intensity on species composition and diversity of undergrowth vegetation community in plantation at initial stage of thinning].

Species composition and diversity of undergrowth vegetation community under different thinning intensities (0, 10%, 20%, 30%, 40%, 50%) were examined at the initial stage of thinning in 29-year-old plantation in the low mountain region of eastern Sichuan. The results show that all the thinning treatments could reduce the absolute dominance of and . The dominant species composition of shrubs in each treatment was different.