Study on visual simulation of selecting trees based on triangle in thinning

The investigation plot of Chinese fir plantation was the research object and the CCF was used for determining the growing state of forest trees. The real-time visual simulation of selecting trees based on triangle in thinning by using the C# programming language and the GDI+ technique was displayed in 2-dimensional scene. The thinning results were displayed in 3-dimensional scene by using the MOGRE technique. The reserved trees were well-distributed and the distances of them tended towards uniformity. It not only can service for selecting felled trees in scientific way, but also can offer a straightforward and efficient visual decision-making platform for adjusting forest structure, improving forest competition relation and using forestland resource sufficiently.