Tree Species Diversity, Richness, and Similarity in Intact and Degraded Forest in the Tropical Rainforest of the Congo Basin: Case of the Forest of Likouala in the Republic of Congo

Table 3

Biodiversity values by biodiversities index and static parameters.

Plots	Type of forest	Total individual	S	Shannon diversity index ()	Fisher’s α	Simpson index	Evenness index =	Variances ()	Ecartype
	Degraded forest	67	26	4.33	15.76	0.05	3.06	0.28	0.53
	Degraded forest	79	22	3.54	13.99	0.14	2.64	0.18	0.43
	Degraded forest	212	38	4.13	23.23	0.08	2.62	0.09	0.3
	Primary forest	132	26	3.57	14.92	0.14	2.52	0.11	0.34
	Primary forest	111	24	3.97	11.3	0.08	2.88	0.15	0.39
	Primary forest	102	29	4.14	17.39	0.07	2.83	0.18	0.42
	Primary forest	52	15	3.36	8.39	0.11	2.86	0.23	0.48
	Primary forest	61	9	2.46	3.81	0.22	2.58	0.11	0.33
	Primary forest	34	12	2.93	8.13	0.16	2.72	0.28	0.53
	Primary forest	106	27	3.94	16.32	0.09	2.76	0.16	0.4
	Degraded forest	217	10	0.75	5.85	0.05	0.75	0.04	0.2
	Primary forest	126	33	4.47	17.76	0.05	2.94	0.16	0.41
	Primary forest	153	31	3.89	19.03	0.1	2.61	0.11	0.33
	Primary forest	109	31	4.38	16.54	0.06	2.93	0.18	0.43
	Agroforestry	47	20	4.12	11.37	0.04	3.17	0.36	0.6