Silvicultural characteristics and regeneration of Fernandoa brillettii (Dop.) Steenis) in Thai Nguyen province

Abstract

Fernandoa brillettii (Dop.) Steenis), is a large, hardwood tree with beautiful grain, used for handicrafts and household utensils. Wood of the species is ranked the most valuable in the wood classification frame of Vietnam. The research results showed that the tree species composition where the Fernandoa brillettii located is very diverse in terms of the number of species. The number of individuals of each species participating in the composition formula ranges from 7 to 11 participating species. The importance of Fernandoa brillettii in the species composition formula varies among sampling plots. Only 2/10 sampling plots have the participation of Fernandoa brillettii in the composition formula. Fernandoa brillettii naturally appears in the areas with canopy cover from 0.3 - 0.5, with the average of 0.38, this shows that the tree species is distributed in places with relatively low canopy. The species composition of regenerative trees is mainly pioneer, fast-growing species. The highly regenerating Fernandoa brillettii tree only appears in the sampling plot number 4 and has a species composition index of 1.88. Regenerating trees of Fernandoa brillettii seed are 53 trees, accounting for 59.5%, and bud regeneration is 40.5%. Regeneration quality of Fernandoa brillettii: Good saplings reached 31.5%, average saplings reached 33.7%, bad saplings accounted for 34.8%. Good saplings are mainly trees with a height of 0 - 1 m. Promising regeneration of sapling tree accounts for 25.8%. The results of biological characteristic survey showed that the flowering time ranges from May 10 to July 30 annually; The fruiting period is from June 10 to November 30