The researchers studied how a plant called Phragmites communis in Xinjiang changes its photosynthesis throughout the day. They measured factors like stomatal conductance and net photosynthetic rate to see when the plant was most active. They found that the plant had two peaks of activity at 10:30 and 16:30, with a break in the afternoon. This break was mainly due to the plant's stomata closing up. The plant's photosynthesis was most influenced by factors like sunlight and water loss. Overall, this study helps us understand how plants in this area work and how we can protect and use them better.