人工混交林的林分可视化研究

A Study on Stand Visualization of Artificial Mixed Forests

随着计算机科学与图形学的快速发展,林分可视化技术已经成为21世纪数字林业和精准林业的重要支撑。以林分可视化系统(stand visualization system,SVS)基本原理为切入点,利用木兰围场国有林场森林植被调查数据,详细介绍了该模型的使用方法,展示了研究区内华北落叶松(Larix principis-rupprechtii)-白桦(Betula platyphlla)单木树形设计与人工混交林林分可视化的基本流程,并对模拟结果进行了分析与讨论。研究结果表明,林分可视化系统可生成直观、立体、精美的林分可视化效果图,并可提供林分树种分布、胸径分布、垂直结构、郁闭度等大量林分基础数据信息;可在虚拟森林环境中设计或调整森林经营方案,模拟森林经营的全过程,是实现森林经营可视化的理想工具;最后,讨论了林分可视化系统现阶段应用的局限性与未来的发展方向。

With the staggering development of computer and graphics sciences,stand visualization technology has become a solid foundation and guarantee for digital and meticulous forestry in the 21st century.Beginning with the basic principles of stand visualization system（SVS）,we demonstrated the operation and outputs of SVS based on the forest survey in Mulan Weichang state-owned forest farm.In addition,we illustrated the technical process of individual tree simulation and mixed plantation visualization via SVS.The simulation outcomes were analyzed and discussed as well.The results of the this study indicated that SVS could provide successfully an intuitive,three-dimensional picture with substantial statistical data of forest stands,including species and DBH distribution,height structure and forest canopy.In the fictitious forest environment,SVS can be used to design and modify various forest management plans,and to simulate the entire process of forest management.We concluded that SVS is an ideal tool for visualize forest management.In the end,the paper discussed the current limitations and possible future needs in development.