As the impact of natural environment

resource competition

propagation of trees and other factors

the spatial distribution of trees in forest is changing continuously. In this paper

we put forward the method to simulate this dynamic evolution of forest based on the theory of forest ecology. The spatial distribution information of trees is recorded and visualized in a form of two-dimensional distribution diagram

and three important evolution rules of forest: self-thinning

species succession and clustering growth

are simulated with iterated deduction manner. Based on the simulation results above

we realize the visual performance of the procedure of forest dynamic simulation. In the simulation

for the seek of speeding up the process of making intersection test among trees

which is the most time-consuming process in iterated deduction

we propose the improved quadtree algorithm quadtree with extended boundaries to reduce the number of intersection test. Generation the initial distribution information of trees refers to the conception of the foresty spatial data

which can make the initial data of forest to better fit the diameter distribution of trees. The method can be used to provide the dynamic distribution data of forest for further realizing the realistic simulation of dynamic forest scenes. Furthermore

it also has potential value in forestry research and applications. The proposed method can be applied to the areas like film and animation

virtual reality

but also has great potential of research and application of forestry science.