Abstract
Nigeria’s deforestation rate is at an alarming level due to weak forest governance, losing about 80 kha of natural forest cover per annum every year to agricultural land expansion, conflicts, and illegal logging. The expansion of agricultural land over other land use is over 50% and it is increasing. Agroforestry, as an option, offers a dynamic, ecologically based, natural resource management system that integrates forest trees into the agricultural landscape for the benefit of land users at all levels. This research aimed to assess the diversity and abundance of agroforestry tree species between the forest and farm zones at Edun Forest Reserve to improve agrobiodiversity by identifying tree species richness around farms in the reserve. A systematic sampling technique was used to sample plots, and relative dominance and important value index were determined. Results showed a significant difference between the species richness between the forest zone and farm zone of Edun Forest Reserve. On the important value index, Gmelina arborea (25.04) has the highest in the forest zone, while Cedrela odorata (0.661) is the least, and Tectona grandis (39.37) is the species with the highest in the farm zone Terminalia ivorensis (2.91) recorded the least. Combretaceae was identified as the most dominant family across the two zones. This research showed that appraisal of tree stand structure on farmlands is crucial for sustainable agroforestry management decisions in the forest zones of Nigeria.
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Claims 7
Claim · model-written summary
Agroforestry tree species richness differs significantly between the forest zone and the farm zone of Edun Forest Reserve.
Verbatim
e2“assess the diversity and abundance of agroforestry tree species”
e1“Results showed a significant difference between the species richness between the forest zone and farm zone of Edun Forest Reserve”
Claim · model-written summary
Gmelina arborea has the highest important value index in the forest zone (25.04).
- Taxon
- Gmelina arborea
Gmelina arboreae3 - Outcome
- important value indexe3
- Direction
- higheste3
- Value
- 25.04e3
- Setting
- forest zonee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“On the important value index, Gmelina arborea (25.04) has the highest in the forest zone”
Claim · model-written summary
Cedrela odorata has the lowest important value index in the forest zone (0.661).
- Taxon
- Cedrela odorata
Cedrela odoratae4 - Outcome
- important value indexe4
- Direction
- leaste4
- Value
- 0.661e4
- Setting
- forest zonee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“On the important value index, Gmelina arborea (25.04) has the highest in the forest zone, while Cedrela odorata (0.661) is the least”
Claim · model-written summary
Tectona grandis has the highest important value index in the farm zone (39.37).
- Taxon
- Tectona grandis
Tectona grandise5 - Outcome
- important value indexe5
- Direction
- higheste5
- Value
- 39.37e5
- Setting
- farm zonee5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“On the important value index, Gmelina arborea (25.04) has the highest in the forest zone, while Cedrela odorata (0.661) is the least, and Tectona grandis (39.37) is the species with the highest in the farm zone”
Claim · model-written summary
Terminalia ivorensis has the lowest important value index in the farm zone (2.91).
Verbatim
e6“On the important value index, Gmelina arborea (25.04) has the highest in the forest zone, while Cedrela odorata (0.661) is the least, and Tectona grandis (39.37) is the species with the highest in the farm zone Terminalia ivorensis (2.91) recorded the least”
Claim · model-written summary
Combretaceae is the most dominant family across the forest and farm zones.
- Taxon
- CombretaceaeCombretaceaee7
- Outcome
- most dominant familye7
Verbatim
e7“Combretaceae was identified as the most dominant family across the two zones”
Claim · model-written summary
Appraisal of tree stand structure on farmlands is crucial for sustainable agroforestry management decisions.
Verbatim
e2“assess the diversity and abundance of agroforestry tree species”
e0“This research showed that appraisal of tree stand structure on farmlands is crucial for sustainable agroforestry management decisions in the forest zones of Nigeria”