The area of first-flush leaves was lower in the open-field site than in the undergrowth site, but the total leaf area including first- and second-flush leaves of a plant indicated an opposite pattern.

• 二次生长使蒙古栎幼苗的叶面积有明显增加，但是经过二次生长后，幼苗的单株生物量没有明显增加，说明二次生长叶片对于蒙古栎幼苗生物量的积累没有明显贡献；