Abstract: The branching pattern of Larix gmelini was Described in this paper using Fractal Geometry, the results showed that, 1) The branching pattern of Larix gmelini is a kind of fractal structure, satisfying selfsimilarity law. 2) The fractal dimensions of Larix gmelini branching pattern were between 1.4~1.7, disclosed the complexity of the branching structure and the ability of ecological space occupati on and utilization. Fractal dimension is a useful parameter to the study of light utilization and growing process of tree species.

Key words: Larix gmelini, Branching pattern, Scale, S elf-similarity, Fractal dimension