Tree Species Richness, Diversity, and Vegetation Index for Federal Capital Territory, Abuja, Nigeria

Table 3

Biodiversity indices and growth parameters of individual trees in the periurban areas (Abuja city) of the Federal Capital Territory, Nigeria.

S/N	Tree species	Family	FQ	MHt	MDbh	B.A	Vol.	RD	RDO	IVI
1	Albizia falcate	Fabaceae	1	19.8	16.0	0.02	0.40	0.47	0.15	0.31
2	Azadirachta indica	Meliaceae	16	19.1	11.9	2.86	54.56	7.51	20.85	14.18
3	Cleistopholis patens	Annonaceae	5	15.6	17.4	0.59	9.27	2.35	4.34	3.34
4	Cocos nucifera	Arecaceae	11	8.4	5.3	0.26	2.22	5.16	1.93	3.55
5	Delonix regia	Fabaceae	17	14.2	2.7	0.17	2.38	7.98	1.22	4.60
6	Elaeis guineensis	Arecaceae	1	14.2	47.8	0.18	2.55	0.47	1.31	0.89
7	Euphorbia dendroides	Euphorbiaceae	1	8.0	52.0	0.21	1.70	0.47	1.55	1.01
8	Ficus goliath	Moraceae	4	15.5	17.5	0.38	5.93	1.88	2.79	2.34
9	Gmelina arborea	Verbenaceae	72	14.0	1.2	0.63	8.83	33.80	4.60	19.20
10	Hildegardia baterii	Malvaceae	1	15.7	89.6	0.63	9.90	0.47	4.60	2.54
11	Jatropha curcas	Euphorbiaceae	1	4.0	16.0	0.02	0.08	0.47	0.15	0.31
12	Mangifera indica	Anacardiaceae	20	11.1	2.1	0.13	1.48	9.39	0.97	5.18
13	Nauclea diderrichii	Rubiaceae	2	15.5	68.0	1.45	22.49	0.94	10.59	5.76
14	Parkia biglobosa	Fabaceae	26	16.3	4.5	1.09	17.80	12.21	7.97	10.09
15	Ravenala madagascariensis	Strelitziaceae	1	15.4	36.0	0.10	1.57	0.47	0.74	0.61
16	Ricinodendron heudelotii	Euphorbiaceae	1	6.8	171.0	2.30	15.62	0.47	16.77	8.62
17	Senna siamea	Fabaceae	6	21.2	14.8	0.62	13.13	2.82	4.52	3.67
18	Terminalia superba	Combretaceae	9	12.7	13.6	1.17	14.85	4.23	8.53	6.38
19	Treculia Africana	Moraceae	1	6.0	85.8	0.58	3.47	0.47	4.22	2.35
20	Vachellia nilotica	Fabaceae	17	9.2	3.6	0.30	2.74	7.98	2.18	5.08
			213			13.7	191.0

FQ: number of tree stems in the city, B.A.: basal area of trees in the city, Vol.: volume of trees in the city.