基于GIS的数字三维林相图构建技术  

Construction technology of digital and three-dimensional forest form map based on GIS.

作　　者：董斌[1,2,3] 冯仲科[1,2] 张冬有[1,2] 姚山[1,2] 隋宏大[1,2] 王佳[1,2] 

机构地区：[1]北京林业大学省部共建森林培育与保护教育部重点实验室 [2]北京林业大学测绘与3S技术中心 [3]安徽农业大学理学院

出　　处：《北京林业大学学报》2008年第S1期143-146,共4页Journal of Beijing Forestry University

基　　金：北京市自然科学基金重点项目(4041002);安徽农业大学校长青年基金(20030901)

摘　　要：该文以北京市妙峰山林场为例,介绍了数字三维林相图的构建技术。首先,利用纸质地形图建立矢量底图,将矢量图与各种数字化的专题图进行处理和融合;其次,由小班外业调查资料建立小班属性库,根据图形、属性和图像库建立林相景观数据库;最后,通过地理信息系统实现林相图的三维数字化表达。在三维林相图中,通过不同颜色直观地表达不同树种的分布,克服了纸质林相图树种分布不直观、界线不明显的缺点,实现了森林的规划设计、抚育、更新和管理的可视化。Taking Beijing Miaofengshan Forest Farm as an example,the construction technology of digital and three- dimensional forest form map was introduced.First,a vector base map was created based on a paper relief map,then the vector map and various digital thematic maps were treated and integrated.Secondly, subcompartment attribute database was constituted according to the subcompartment investigation data,and subsequently forest form landscape database was established by graphics,attributes and image library.Finally, digital and three-dimensional forest form map was realized through geographic information system.In the three- dimensional forest form map,the distribution of different tree species is directly expressed by different colors, which overcomes the indirect distribution and inconspicuous borderline of the paper forest form map,and additionally,forest planning and design,forest tending,regeneration and management can be visualized easily.

关 键 词：数字林业 三维林相图 融合 可视化 地理信息系统 

分 类 号：S771.8[农业科学—森林工程]