Photosynthesis rate of Kalopanax septemlobus Koidz was a double-peak curve in dry season, and the rests were all single-peak curves.

• 水分利用效率日变化在雨季3个树种呈单峰型，在旱季黄连木呈单峰型，而刺楸和栾树呈双峰型。