Table 2. The basic information of herb diversity for understory and canopy density in the six sampling plots.

Sample plot	L. principis-rupprechtii seedlings (number)	The thickness of undecomposed layer (cm)	The thickness of semi-decomposition layer (cm)	Shannon-Wiener index	Pielou index	Simpson index	Canopy density
I	240	1.8	3.0	2.2	0.97	0.79	0.3
II	327	1.5	2.3	2.4	0.98	0.80	0.2
III	429	1.3	1.5	2.0	0.92	0.78	0.1
IV	449	1.2	1.3	2.0	0.93	0.72	0.1
V	373	1.3	1.5	2.8	0.99	0.85	0.5
VI	220	1.7	3.2	2.8	0.98	0.96	0.2