Psammophilic shrubs in the northeast Ulanhub desert were studied to understand their photosynthetic and physiological characteristics. The researchers found that different shrub species have varying stomatal conductance, photosynthetic rates, transpiration rates, and water use efficiencies. Some shrubs had higher stomatal conductance and transpiration rates, while others had higher photosynthetic rates and water use efficiencies. Factors affecting photosynthesis were mainly non-stomatal. Overall, the study showed that these shrubs have unique ways of adapting to their desert environment during the late growing season.