Abstract: This paper proposes a GPU-based dynamic forest simulation method for interactive simulation and real-time rendering of large-scale forest scenes in wind.We use an image-based approach to simplify tree models and reconstruct depth meshes in different LOD levels.The reconstructed tree models are then compressed to save storage space.We model the natural wind as a stationary stochastic process/field,and the motion of trees driven by wind force is simulated using a procedural animation approach.The result demonstrates that the proposed method is effective and practical for fast simulation of large-scale dynamic forest scenes with 100 000 trees at expense of 8 MB storage cost and 85 MB GPU memory cost.