Table 5.

Diversity distribution of woody layer outside tiankeng.

Samples	Marglef		Shannon–Wiener		Pielou		Simpson
	S	A	S	A	S	A	S	A
Southwest	2.173	1.016	0.523	1.423	0.485	1.828	0.780	0.706
Northwest	1.378	1.120	0.555	1.502	0.614	1.930	0.785	0.716
Northeast	2.391	1.349	0.522	1.865	0.456	2.065	0.745	0.832
Southeast	3.045	1.386	0.494	1.766	0.393	1.955	0.785	0.786
Average	2.246	1.218	0.523	1.639	0.487	1.945	0.774	0.760
Standard deviation	0.688	0.179	0.025	0.210	0.093	0.097	0.019	0.060
Coefficient of variation	0.306	0.147	0.048	0.128	0.191	0.050	0.025	0.078

S showed shrub layer; A showed arbor layer.