The researchers studied how Actinidia chinensis leaves photosynthesize and transpire throughout the day. They used a portable photosynthesis device to measure the rates of photosynthesis and transpiration. They found that photosynthesis had two peaks but decreased at midday due to non-stomata factors. Transpiration had one peak at noon. The study showed positive correlations between photosynthesis and transpiration, photosynthesis and light intensity, photosynthesis and leaf conductance, transpiration and vapor pressure deficit, and transpiration and temperature. However, there were negative correlations between photosynthesis and internal CO2 concentration, and transpiration and relative humidity.