Research on morphological characteristics and distribution of Indosasa sinica C.D. Chu & C.S in Nari District, Bac Kan province

Abstract

Indosasa angustata (Indosasa angustata Mc.Clure) is bamboo species
trunk grows underground dispersed, gas trunk grows dispersed, This is multi - purpose tree species natural distribution Midlands provinces in the Northern mountainous country. Research results achieved the following: (1) Structural morphological characteristics: Gas trunk (stem diameter D00 từ 5 - 8.5cm, tree height Hvn 14.65m; walls of gas trunk in the original way 1.3m thick 1.13cm, up to paragraph 5.0m walls of gas trunk thick 0.89cm and up to paragraph 10m walls of gas trunk thick 0.63m; Underground stems divided into 10 - 12 burning, the long burning bamboo 2.3 - 2.5cm, diameter reached from 1.8 - 2.4cm, underground trunk located at depths 30 - 40cm, rising out of the ground when the green; bough and branch (about 1/3 of the trunk and older branches trunk emerging chicken thighs, branches create an angle from 30 - 450 versus gas trunk, Chicken thighs spike to around 1.14 - 1.60cm); There is in addition the research results: structure leaf, cataphyll, fruit...(2) Species distribution Indosasa angustata: Monoculture Indosasa sinica forests topographic location; monoculture Indosasa angustata forests by forest conditions; (3) A number of measures proposed silvicultural for business organization pure Indosasa angustata Forest in Na Ri district, Bac Kan province towards sustainable forest development