Abstract: A greenhouse experiment was conducted to study the adaptability of Dipteronia dyerana cuttage seedlings under different irradiance and water supply. The results showed that both waterlogging and high irradiance induced the decrease of total chlorophyll content and the increase of Chl a/b. Under high irradiance, the leaf area and specific leaf mass were increased, which offset the declined activity of light-harvesting complex Ⅱ (LHCII) and avoid the high irradiance damage. Soil drought and low irradiation led to the decrease of F_v/F_m. Leaf area decreased significantly under soil drought, and specific leaf area decreased under low irradiation. Soil drought was the main limiting factor in D. dyerana population distribution, and this effect was enhanced under low irradiation. Habitat’s moderate disturbance was suggested to conserve D. dyerana and to slow down its community’s natural succession.

Key words: Maize, Chemical constituents, Temporal and spatial dynamics