The Study On Forest Harvesting Operation Based On Computer Simulation

With the global reduce of forest area, natural forest is decreasing gradually so that plantation is being developing rapidly. Compared to natural forests, plantation grew fast, yielded well, developed conveniently, gained efficiency early and the timber size and quality are more stable. Moreover, The harvesting operation in plantation is large-area and high-intensity and the traditional manual felling can not meet the demands of high production, so some of forest managers begin introduce forestry machine to felling trees. While choosing the Harvesting system, main factors should be considered are productivity and cost.The main research contents for the study are as follow:At first, the paper compares the height of stump under machinery operation and manual operation. Second, we uses the general linear model (GLM) for analyzing the productivity and the cost of felling operation and skidding operation, study on the feasibility of machinery harvesting operation system. And then through the multi-model optimized method deciding the best DBH and tree height growth eqution of Eucalyptus. On the basis of above study, this paper researches and designs a simulation system of forest harvesting operation based on VB procedure. Simulate the harvesting operation of three stands under four harvest methods and six skidding/forwording pattern. Study on the interaction of stand conditions, machine attributes and harvest prescriptions, and analyze the productivity and the cost of machinery operation and manual operation under different felling type and different skidding pattern.This paper takes the harvesting operation of guangxi StoraEnso forest limited company as an example, systematic study on productivity and cost of machinery operation. And construct a forest harvesting operation based on computer simulation, which used for auxiliary decision-making in forest operation.