Abstract: Ecosystem is typically characteristic of heterogeneity, non-linearity, and multi-hierarchy etc. Aimed at the complexity of ecosystem and from the viewpoint of statistical dynamics, this paper approached the dynamic mechanisms of fractal hierarchical structure in complex ecosystem, analyzed the affecting factors of fractal dimension, compared the theoretical analyses with practical examples, and discussed the possible applications in practice.

Key words: mung bean, elevated CO₂ concentration, FACE, climate change, photosynthesis, chlorophyll fluorescence parameter