基于GDI+技术的林分结构可视化技术研究

Study on Stand Strucutre Visualization Based on GDI+

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。

Aimed to stand strucutre data,essential stand strucutre factors were screened and standardized.Through transfering the field coordinates into screen coordinates and rendering two-dimensional abridaged general view of every single tree one by one,the spatial and attributive strucutre of the stand was intuitively simulated.Based on GDI＋ technology,two-dimensinal spatial sturcuter diagram was generated to reflect stand density,crown density,spatial distribution pattern and so on;while histogram was generated to reflect the distribution of stand structure attibutes,and finally achieved the goal of the visualization of stand strucutre from Huangfengqiao forestry in Youxian,Hunan.The results showed that stand strucutre became more vivid or intuitive by means of visualization than datasheet.