Tree regeneration characteristics in limestone forests of the Cat Ba National Park, Vietnam

Table 1 One sample t-test results for the five calculated ratios relating species richness of the regeneration and the overstory layers

Ratio	Mean	Confid. interval (95%)	t-value	df	p-value
Species richness ratio	0.68	0.59–0.77	− 7.06	89	< 0.001
True diversity ratio	0.69	0.60–0.79	− 6.48	89	< 0.001
Same species ratio	0.38	0.35–0.42	− 33.49	89	< 0.001
Newly occurred species ratio	0.30	0.20–0.39	− 15.02	89	< 0.001
Threatened species ratio	0.36	0.26–0.46	− 12.37	89	< 0.001

Shown are mean values (Mean) and estimated confidence intervals (Confid. interval) as well as t-values, degrees of freedom (df) and p-values. Significance is assigned at p < 0.05

ISSN: 2730-7182