| Along with the society, economic development and enlargement of the industrial production scale, mankind's demand for forest resources, especially industrial timber raw materials increases constantly, which make the imbalance between supply and demand of the forest products strengthen. Expanding the plantation area, strengthening the forest management and timbre production is the ratical measures for solving the sortage of wood suply around the world, which is the important factor of promoting social sustainable development too. It is the important field of forestry's industry's system construction of our country to develop the base of commercial forest including industrial raw materials forest, and is also the hope for enhancing forestry strength , alleviating the timber insufficient in supply in new century to our country .Acacia mangium Willd is evergreen arbor species, which belong to Mimosaceae family and Acacia jenus. It developes rapidly as a fast-growing tree of the industrial raw materials forest in the South of China by success of introduction in the past years.On the process of developing industrial raw materials forest on a large scale, a series of practical problems including unperfect silviculture technology still exists at present. This research regards solving technological scheme of A. mangium stand management programming and decisions, and takes it as a selected title for meeting the enormous demand of the forest raw materials in Guangxi district on fibreboard production. The main research contents comprise stand management, mathematical modeling for A. mangium growth tables, works programming, forest maturity,economic benefit, etc. The object of research is to promote the stand management technique and timber utilization of A. mangium. So this research has realistic meanings in promoting regional forest industrialization management.This research relies on the scientific research project(2000-2006 years) at forestrycollege of Guangxi university--" test and popularization of A. mangium of short rotationtimbre forest at Gao-feng industrial materials forest base for height yield",which author has participated in person. Such methods as the Forest measuration, test design, statistics ,timber dissecting, economic evaluation have been synthetically used while studying.The method of basic data gather in Study district is adopted with fixed sample plots, which is measured repeatly for years in succession. A large number of sample trees and analysis trees were fallen down, in order to grasp growth process of A. mangium tree accurately, at the same time, the main physics performance index and timber fibre were test and examed so as to aquire the direct relevant fibre indexes utilized in wood processing. Combining the modeling technology, database technology, the multi-way analytical method and adopting the relevant statistics software , the forest growth, yield, management procedure for A. mangium were simulated and constructed. The timber-volume yield and economic benefit of A. mangium stand management were appraised on this basis. Study run through the outline of intensive silviculture, the goal of the products reap, measure assessment and optimum management. Through the theory and practice, model fitting and testing, stand management and quality evaluation, the important technological kernel about A.mangium stand management was formed, which has established a foundation for the stand management and timber base administration of large-scale Acacia plantation.According to the stand management practice of the industry plantation in the studying area, from growth contrast of varieties of A. spp., the contrast of different density afforest of A. mangium, and comparison on mixed afforest with eucalyptus, stand thinning,to different base manures test, the growth rythem of A. mangium juvenile stand was revealed. The effect of afforestation on densities, mix stand, thinning stand, fertilizer applying action are also Pointed out in this paper. The research created the conditions for optimizing and fostering the stan... |
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