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Table 5 Important value index of woody species of the Hirmi woodland vegetation

From: Ecological and floristic study of Hirmi woodland vegetation in Tigray Region, Northern Ethiopia

Species name RF RD RDO IVI Species name RF RD RDO IVI
Anogeissus leiocarpa 5 4.86 10.69 20.55 Mimusops kummel 1.25 1.04 0.44 2.73
Combretum hartmannianum 3.22 3.81 6.05 13.08 Acacia lahai 1.07 0.9 0.75 2.72
Ziziphus spina-christi 3.22 5.24 4.28 12.74 Bersama abyssinica 0.77 1.72 0.22 2.71
Terminalia macroptera 3.52 2.66 5.24 11.42 Piliostigma thonningii 0.92 0.52 1.03 2.47
Acacia polyacantha 2.45 2.36 6.42 11.23 Capparis tomentosa 1.22 1.01 0.15 2.38
Flueggea virosa 2.3 5.46 1.92 9.68 Gardenia ternifolia 1.53 0.41 0.44 2.38
Dodonaea angustifolia 1.53 5.84 2.21 9.58 Ficus palmata 0.77 0.34 1.25 2.36
Diospyros abyssinica 1.53 3.35 4.13 9.01 Combretum adenogonium 0.61 0.6 0.88 2.09
Ozoroa insignis 2.76 1.83 3.61 8.2 Adansonia digitata 1.07 0.23 0.75 2.05
Diospyros mespiliformis 1.99 2.4 3.47 7.86 Balanites aegyptiaca 0.92 0.75 0.37 2.04
Ziziphus mucronata 3.98 2.32 1.47 7.77 Boswellia papyrifera 0.92 0.52 0.52 1.96
Acacia abyssinica 2.77 2.13 2.36 7.26 Justicia schimperiana 0.46 0.79 0.22 1.47
Ficus ingens 2.3 1.04 3.61 6.95 Euclea schimperi 0.77 0.49 0.15 1.41
Terminalia catappa 1.38 1.16 4.2 6.74 Ficus vasta 0.62 0.15 0.59 1.36
Ximenia americana 2.3 3 1.4 6.7 Ficus hochstetteri 0.61 0.26 0.44 1.31
Combretum rochetianum 1.99 1.5 2.8 6.29 Acacia albida 0.61 0.3 0.38 1.29
Acacia seyal 2.3 1.23 2.58 6.11 Lannea schimperi 0.61 0.3 0.37 1.28
Dichrostachys cinerea 2.3 2.28 1.32 5.9 Gardenia ternifolia 0.77 0.41 0.07 1.25
Lannea fruticosa 2.76 1.57 1.33 5.66 Leptadenia hastata 0.62 0.49 0.07 1.18
Acokanthera schimperi 1.53 3.35 0.66 5.54 Albizia malacophylla 0.46 0.3 0.37 1.13
Maytenus arbutifolia 1.53 3.35 0.66 5.54 Jasminum abyssinicum 0.61 0.52 0 1.13
Combretum molle 1.53 1.53 1.99 5.05 Woodfordia uniflora 0.46 0.45 0.15 1.06
Rhus retinorrhoea 1.84 1.8 1.25 4.89 Buddleja polystachya 0.46 0.3 0.22 0.98
Maytenus senegalensis 1.84 2.13 0.6 4.57 Strychnos innocua 0.46 0.23 0.29 0.98
Vangueria madagascariensis 1.23 2.28 0.82 4.33 Syzygium guineense 0.31 0.23 0.37 0.91
Sterculia setigera 0.91 0.37 2.95 4.23 Senna singueana 0.61 0.23 0.07 0.91
Grewia ferruginea 1.53 1.27 1.33 4.13 Croton macrostachyus 0.46 0.19 0.15 0.8
Elaeodendron buchananii 1.84 1.5 0.59 3.93 Maerua angolensis 0.61 0.19 0 0.8
Otostegia integrifolia 1.07 2.21 0.37 3.65 Carissa edulis 0.31 0.41 0.07 0.79
Ficus sycomorus 1.38 0.75 1.47 3.6 Erythrina brucei 0.46 0.11 0.22 0.79
Calpurnia aurea 0.92 1.98 0.59 3.49 Albizia amara 0.46 0.19 0.07 0.72
Euclea racemose 1.68 1.35 0.44 3.47 Eugenia bukobensis 0.46 0.19 0 0.65
Acacia venosa 1.53 1.5 0.22 3.25 Phoenix reclinata 0.31 0.15 0.15 0.61
Entada abyssinica 1.23 0.97 0.96 3.16 Cordia africana 0.31 0.11 0.07 0.49
Ehretia cymosa 1.23 1.23 0.66 3.12 Olea europaea 0.31 0.07 0.07 0.45
Ficus salicifolia 1.23 0.6 1.25 3.08 Otostegia fruticosa 0.32 0.11 0 0.43
Lonchocarpus laxiflorus 1.23 0.79 0.81 2.83 Phytolacca dodecandra 0.31 0.11 0 0.42
Ormocarpum pubescensm 1.38 0.82 0.6 2.8 Buddleja cordata 0.32 0.07 0 0.39
Stereospermum kunthianum 0.77 0.67 1.33 2.77 Acacia nilotica 0.31 0.04 0 0.35
  1. *RF relative frequency, RD relative density, RDO relative dominance, IVI importance valueindex; Bold = species with high and least IVI