The study looked at how the net photosynthetic rate of Bauhinia championii plants changes throughout the day in different seasons. They found that the plants had different patterns of photosynthesis in spring, summer, autumn, and winter. In summer, the decrease in photosynthesis at noon was mainly due to nonstomatal factors, while in autumn it was mainly due to stomatal factors. The main factors influencing photosynthesis varied by season, with stomatal conductance and CO2 concentration being important in spring, light intensity in summer, stomatal conductance in autumn, and CO2 concentration and transpiration rate in winter. Overall, the plants showed the highest growth potential in summer and autumn.