文献类型：期刊文献

中文题名：果子沟林场三维建模与可视化实现

英文题名：3-D Tree Model and Its Visualization in Guozigou Forest Farm

作者：刘海[1] 张怀清[1] 鞠洪波[1] 唐学君[2] 胡博[1]

第一作者：刘海

机构：[1]中国林业科学研究院资源信息研究所;[2]国家林业局华东林业调查规划设计院

年份：2016

卷号：29

期号：1

起止页码：74-79

中文期刊名：林业科学研究

外文期刊名：Forest Research

收录：CSTPCD;;Scopus;北大核心:【北大核心2014】；CSCD:【CSCD2015_2016】；

基金：国家863计划课题(2012AA102002)

语种：中文

中文关键词：单木建模;林场模拟;雪岭云杉;小班属性

外文关键词：tree modeling; forest farm simulation; Schrenk spruce; subcompartment properties

分类号：S711.8

摘要：[目的]为了提高森林景观模拟的真实性和实用性,为森林景观规划和森林经营管理提供可靠依据。[方法]以新疆霍城县果子沟林场作为试验区,以林区内主要树种雪岭云杉为树木建模对象,以小班为单位对果子沟林场进行三维可视化模拟。通过外业测量获取林木的树高、胸径、冠幅以及冠高等测树因子。从冠形和叶片角度入手对雪岭云杉的外形特征进行分析。使用单曲线方程对冠形进行模拟,使用泊松分布模型模拟树叶在树冠内的分布情况。然后,使用林相图提取小班边界。利用外业调查数据和CTS系统构建不同形态的树木模型。通过林分分布规则、小班属性以及林场内植被分布规则对林木的空间分布进行模拟。最后,使用SQL SERVER 2005作为数据管理平台,使用八叉树作为三维场景管理,结合LOD、视点替换、及地形分页等三维场景渲染及优化技术,对果子沟林场进行三维可视化模拟。模拟面积达300 km2,平均帧率20 FPS以上。[结果]模拟结果较好地反映了小班的空间分布格局,直观地体现出小班内部林木的空间位置分布,具有一定的实用价值。
Guozigou State-owned Forest Farm in Huocheng county of Xinjiang Uygur Autonomous Region,was selected as a test area. Schrenk spruce（ Picea schrenkiana）,the dominant tree species,was chosen to establish model with subcompartment as the smallest unit of simulation. The tree height,DBH,crown width and the crown height were measured. In this paper,the shape characteristics,such as crown shape and leaf blade of the Schrenk Spruce were analyzed. The field investigation data and CTS system was used to establish the tree model and Poisson model was used to simulate leaf distribution in the canopy. The tree visualization simulating for Guozigou State-owned Forest Farm was realized by taking SQL SERVER 2005 as the data process platform,and using octree model as a 3-D scene management tool,combining LOD,perspective replacement and paging terrain,3-D scene rendering and optimization techniques. The average frame rate was higher than 20 FPS,the area simulated was over 300 hectare.The simulation results could well reflect the spatial pattern and showed intuitively the space distribution of trees in the subcompartment.