RELATIONSHIPS OF Cinnamomum bejolghota (Buch-Ham) Sweet) WITH NEIGHBOUR SPECIES IN SOME NATURAL FOREST STATE

Abstract

Research on the interrelationship between Cinnamomum bejolghota (Buch-Ham) Sweet and species in natural forests is essential for adjusting tree species composition in natural forest stands when it is necessary to influence solutions. silviculture. More importantly, it is the basis for choosing mixed forest species with Cinnamomum bejolghota (Buch-Ham) Sweet. To study the relationship between Cinnamomum bejolghota (Buch-Ham) Sweet and tree species in natural forests, use the 6-tree plot survey method and base on the frequency index to determine the relationship. The occurrence of Cinnamomum bejolghota (Buch-Ham) Sweet in the investigated areas is quite high, accounting for 46.67% to 53.33% of the total number of investigated plots. The tree species that appear with Cinnamomum bejolghota (Buch-Ham) Sweet are quite large, ranging from 38 species to 48 species, while the number of "frequently encountered" tree species with Cinnamomum bejolghota (Buch-Ham) Sweet is very small, ranging from 3 to 5 species: In Hoa Binh, there are 5/40 species including: Syzygium cumini, Machilus bonii Lecomte, Syzygium levinei, Canarium tonkinense Engl, Fagus sylvatica; In Son La, there are 3/48 species including: Gironniera subaequalis, Machilus bonii Lecomte, Zizamia latifolia Turcz; In Phu Tho, there are 3/38 species including: Aphanamixis grandifolia Blume, Barringtonia acutangula. The average distance from the Cinnamomum bejolghota (Buch-Ham) Sweet tree to 6 surrounding trees in Hoa Binh is 5,8 m; in Son La it is 4.8 m and in Phu Tho it is 5.6 m. Cinnamomum bejolghota (Buch-Ham) Sweet is a species whose growth is more dominant than surrounding tree species.