The Computer Aided Management System For Acacia Mangium Forest

With the development of plantation, especially the constant enlargement of the artificial pure area of forest, artificial forest land fertility is declining constantly, the Acacia mangium takes the nitrogen-fixed plant as the legume family of Acacia, not only have fine material, satisfy mankind's demands for timber, but also root nodule its can nitrogen of regular air, thus offered a new way for solving artificial forest land fertility declining. As fine seeds of Acacia, Acacia mangium account for culture of Acacia spread and popularize get up the masses of forestry attention of worker. In view of this, the achievement which the basis forefathers of this text study is on the foundation investigated in Fujian Acacia mangium, summarize the present Acacia mangium 's forest management, according to the principle of systematic emulation, carry on the forest simulation that took Acacia mangium on the computer. Through to the comparison of different forest measures , choose the suitable forest measure, thus produce direct theoretical direction to the forest of Acacia mangium..This system include the following seven pieces of module mainly:1, Stand quality appraise module. This system adopt the method of quantize of scoring., set up to humus layers of thickness , thickness of B layers , soil permeability and effective soil layer thickness four influence geological main factor of quantity carry on quantitative analysis, It comes a better result through the method that confirming the stand quality type by the stand factor's scoring.2, Growth predict module, this system on the basis of the surveys of Fujian, adopting Monte-Carlo method to carry on plot simulation, each plot simulates 2000 pieces of simulation. Utilizing regressing method to analyse Acacia mangium age and the average high model, average high and verage breast-height diameter model. Relativity test indicate these model have remarkable dependence extremely. On the basis of these model models, system can dynamically predict annual tree high , breast-height diameter , suitable density of foresting, volume of timber.3 , Density management model By founding the average breast-height diameter and density model, refer to the growth predict model and the stand quality appraise module, this system can give the users that the suitable density under different early density on different quality stand.3, Fertilizer manage module. By founding the Fertilizer growth model, the system can...