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采用样带网格调查和多样性指数分析方法,研究了透光抚育(全透光、半透光、未透光)对人天混红松林群落植物多样性(丰富度、多样性指数和均匀度)的影响效果,并与天然次生林群落进行对比分析,定量评价了40年生人天混红松群落植物多样性的恢复效果。结果表明:全透光和半透光群落的物种丰富度较未透光群落增加了8.0%和24.0%,但较天然次生林群落却分别下降了18.2%~27.0%和6.1%~16.2%,半透光抚育更有利于该群落物种丰富度的恢复;全透光和半透光群落的物种多样性指数分别较未透光群落提高了3.38%和20.8%,与相应天然次生林群落的变化幅度分别为-8.70%~8.66%和6.69%~26.98%,也是以半透光抚育方式恢复效果好;全透光、半透光和未透光群落的物种均匀度相近(变化幅度在0.02%~10.7%之间),但三者与天然次生林群落有较大的差异性(变化幅度依次为-5.2%~18.2%、4.9%~30.8%和-5.2%~12.6%),半透光抚育群落物种均匀度最高。
The results showed that the plant diversity (richness, diversity index and evenness) Degree), and compared with the natural secondary forest community, and quantitatively evaluated the recovery effects of plant diversity in 40-year-old man-made Pinus koraiensis community. The results showed that the species richness of all-translucent and semi-translucent communities increased by 8.0% and 24.0% compared with that of non-translucent communities, but decreased by 18.2% -27.0% and 6.1% -16.2% Light and tending nurtured more favorable species richness restoration of this community; Species diversity index of all light-translucent and semi-light-translucent communities increased by 3.38% and 20.8%, respectively, compared with that of non-light-transmissive communities, -8.70% ~ 8.66% and 6.69% ~ 26.98%, respectively, and the effect of semi-translucent tending was also good. Species homogeneity of all translucent, semi-translucent and non-translucent communities were similar (ranged from 0.02% to 10.7 %), But the three were significantly different from the natural secondary forest communities (-5.2% ~ 18.2%, 4.9% ~ 30.8% and -5.2% ~ 12.6%, respectively) Evenness is the highest.