TAILIEUCHUNG - Báo cáo lâm nghiệp: " The effects of cutting regimes on natural regeneration in submountain beech forests: species diversity and abundance"

Tham khảo luận văn - đề án 'báo cáo lâm nghiệp: " the effects of cutting regimes on natural regeneration in submountain beech forests: species diversity and abundance"', luận văn - báo cáo phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | JOURNAL OF FOREST SCIENCE 54 2008 12 533-544 The effects of cutting regimes on natural regeneration in submountain beech forests species diversity and abundance M. Barna Institute of Forest Ecology Slovak Academy of Sciences Zvolen Slovakia ABSTRACT The paper summarizes the results of 15-year natural regeneration for beech of five plots with different densities situated in the Western Carpathians Mts. Three of the plots were subjected to differently intensive shelterwood cuttings plots L M H one plot was clear-cut CC and one was left without intervention - as a control C . The number of one-year-old seedlings decreased proportionally with increasing cutting intensity. The ANOVA results document a significant influence of cutting intensity on the abundance of both one-year-old and older seedlings. The abundance of beech seedlings was initially increasing with increasing cutting intensity and having reached the peak on plot M medium intensity there followed a decrease in the seedling abundance. Lower numbers of beech seedlings on plots subjected to less intensive cutting C L result from less favourable growth conditions in comparison with plot M. On the other hand cutting of higher intensity H CC resulted in lower numbers of fructifying parent trees. The medium cut intervention having provided the plot M with stocking of 50 of the stand resulted in a lower number of seed resources limiting factor for natural regeneration . However for the other factor - seedling establishment survival and recruitment this plot M represents an ecological optimum in beech regeneration in the given conditions. Keywords regeneration development stand density shelterwood cutting clear cutting Fagus sylvatica L. Different woody plants have different demands on the environment. They require specific methods of cultivation with cutting operations diversified in timing and spatial arrangement Marusak 2001 . The multi-target model of forest management is the only one that is capable to .

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