The Visual Simulated Technology For The Production Of Forest Management Plan At A Unit Level

The construction of the wisdom forestry operation platform and the improvement of forestry intelligent management level, are the current and future development direction of forestry. Study on the preparation technology of traditional forest management plan, put forward the intelligent scheme drawing system of forestry rules based on human experience, will give great significance for the development of forestry. This study combined the forest management planning process and computer technology, put forward the management unit level forest management program visualization system, and the forest management planning knowledge base based on forest management rules and developed the interactive forest management plan visualization simulation system to achieve management plan design, operation and display of visual expression, provide solutions to practical problems for forestry management, and improve the level of forestry management wisdom, the main achievements are as follows:(1) Preliminary construction of forest management plan knowledge baseThrough the analysis of existing management plan and reference of management measures matching method, combined with Sub-compartment attribute database, construction management measures of knowledge base, and in computer logic judgment to achieve Sub-compartment and measures matched; by using volume model, stand growth model and forest industry professional mathematical model, give the provisions of mathematical formula for different regions, and reach the construction of harvesting knowledge base, and the operator input key parameters of reservation, matching cutting knowledge base and data, to achieve a scientific and empirical unity. Two kinds of knowledge cooperate with each other, and ultimately generate business strategy, to ensure that the business plan intelligent customization of scientific.(2) Interactive visual programming technology for the management of forest management plan for the operatorsThe study definite forest management module and designed management program basic process framework. Operator designed custom design business process through towing modes, shows the business process in the form of flow chart, and set the parameters of the module attribute, to achieve the interactive experience of the operator and the system. Forestry data flowed according to the definite process, and through the module internal business logic to achieve the interaction of data layer and business layer, and ultimately make data shown in the 3D scene by the output module. This technique provides an idea for the visualization and intelligent development of forest management plan.(3) Visualization of 3D Scene Building Technology for forest managementThree dimensional scenes is the display platform for the output of forest management plan, to make the realistic simulation of the real environment is the main task for building 3D scene. This study, based on the MOGRE 3D engine, mainly from several aspects:the sky, the terrain, the sun and the trees, carried on the scene to build. The sky using sky dome technology, guarantee the full angle simulation; terrain consists of two layers of overlapping terrain texture and DEM data, simulating the real terrain in proportion; sun used billboard rendering forms, to make itself rise from east and down from west; forest models are developed by the Chinese Academy of forestry tree modeling software, the research used the LOD loading strategy in different detail and multi species tree models and real coordinate to ensure forest diversity and authenticity.(4) Design and application of the visual simulation system for the production of forest management plan at a unit levelBased on the construction of business knowledge base, interactive management system and 3D scene technology, the visual simulation system of forest management plan was developed. And in Huangfengqiao state-owned forest farm in Hunan Youxian as experimental forest, to generate forest management plan, intelligently The results show that the system is easy to operate and interactive, and the operators can design and view the forest management plan under the visual mode. As a result, the system can be applied to the practice of forest management plan, in order to improve the scientific level of forest management.