Natural regeneration characteristics under the canopy of closed evergreen mixed broad, needle leaf forest types in Bidoup - Nui Ba National Park, Lam Dong province
Keywords:
Bidoup -Nui Ba, mixed broad,, needle leaf, natural regenerationAbstract
In Bidoup - Nui Ba national park, the capable natural regeneration of evergreen mixed broad, needle leaf involving concentration of Fokienia hodginsii, Keteleeria evelyniana, Pinus krempfii, Pinus dalatensis is relatively good. Density regeneration’s from 22,500-38,530 trees ha -1
includle: the small regeneration trees (H vn<1 m) reached from 41.1-60.9%, the advanced regenerating trees (Hvn>2 m) accounted for from 6.2-20.1%, corresponding to the 2,000-5,740 trees ha -1. The number of dominant regenerated tree species in the species composition formula varies considerably between habitats, from 2-6 species. The advanced regeneration group’s more diversified species of trees (43-66 species) than the small
regeneration group (28-48 species). The rates of good and rather quality regenerating trees’s relatively high (>80%). Regeneration capacity in place of the conifers are very low, the density of regeneration average of only 1.15% over the communities. Regenerated trees in most plots of the mixed broad, needle leaf forest in the study area have cluster distribution.
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