基于GDI+技术的林分结构可视化技术研究

摘要

针对林分结构数据,筛选并规范化必要的林分结构因子,对林分内林木将实地坐标转换为屏幕坐标,通过对单株木逐一绘制二维示意图的方式,直观展示林分空间和属性结构.基于GDI+技术,生成空间结构二维示意图反映林分密度、郁闭度、空间分布格局等,生成分布直方图反映林分属性结构分布,实现了湖南攸县黄丰桥林场某林分的结构可视化.结果显示,以可视化手段展示林分结构,比数据表展示更加生动、直观.%As the premise and foundation conditions of stand growth and management visualization, stand structure visualization is a key part of stand visualization.Considering the particularity of stand structure data, we filter and standardize the necessary factors.To intuitively simulate the spatial and attributive structure of the stand, our objective was to transfer the field coordinates into screen coordinates and to render two-dimensional abridged general view of every single tree one by one.This essay takes GDI + technology as basis and uses C# in.NET Framework to generate two-dimensional spatial structure diagram which can show the stand density, crown density, spatial distribution pattern and so on.Meanwhile, it generates the histogram to reflect the distribution of stand structure attributes and finally achieves the goal of the visualization of stand structure.