摘要
为了研究如何绘制虚拟环境中的真实植被模型,利用SketchUp进行树木的三维建模,以实验区10个优势树种为例,先精确绘制单株植物,再分块建立成片植被景观模型,以不同视图展出,最后进行建模结果分析,得到植被树种组成分布格局。从建立的模型图来看,实验区的中小型树种较多,大型树木较少,推断实验区新生树木多,植物生长势头较好;整体来看,米槠和甜槠占有绝对优势。本文采用SketchUp模拟出单个树木的形态,并考虑环境因素设置树木形态参数,较好地模拟树木,使树木形象化、信息化和简单化。分块进行树木的建模,不仅简化建模过程、易于完善模型和集成模型,还使电脑运行负担降低,加快软件运行速度。最后拼合成整体,较好地实现了林分可视化,为林业科学研究提供参考。
In order to study how to draw real vegetation model in virtual environment,this paper used SketchUp for threedimensional modeling of trees,taking ten dominant tree species in experimental area for example.Individual plant was drawn accurately,and then a piece of vegetation landscape model in blocks was established,which was displayed in different views.Finally,the distribution pattern of vegetation tree species was obtained by analyzing the modeling results.According to the model diagram,there were more small and medium-sized tree species and fewer large trees in the experimental area.It was concluded that there were more new trees and better plant growth momentum in the experimental area.Overall,Castanopsis carlesii and Castanopsis eyrei occupied the habitat first.In this paper,SketchUp was used to simulate the shape of an individual tree,and environmental factors were taken into account to set the shape parameters of trees,which can better simulate trees and make them visualized,informative and simplified.Building trees in blocks not only simplified the modeling process,but also improved the model and integration model,reduced the running burden of the computer and sped up the software operation.Finally,the whole forest was integrated to achieve the standing forest visualization.The tree model constructed in this paper provided a reference for forestry scientific research.
作者
冯婉玲
陈水飞
何立恒
吴迪
FENG Wanting;CHEN Shuifei;HE Liheng;WU Di(College of Civil Engineering,Nanjing Forestry University,Nanjing 210037;Research Center for Nature Conservation and Biodiversity,Nanjing Institute of Environmental Sciences,Ministry of Environmental Protection,Nanjing 210042)
出处
《森林工程》
2019年第1期22-28,共7页
Forest Engineering
基金
江苏省测绘地理信息科研项目(JSCHKY201806)
南京林业大学大学生创新训练计划项目(2016NFUSPITP110)
