An assessment of the forest regeneration potential of the taungya system of farming in Oyo State, south-western Nigeria

Azeez, I. O.; Popoola, L.; Shulamite, Idowu O

doi:10.2989/20702620.2016.1255425

Cited by 8 publications

(6 citation statements)

References 4 publications

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“…However, the closed forest increased between the period by 1%. Azeez et al (2017) noted great contributions of taungya system of farming to forest regeneration in Oso Forest Reserve of Oyo State. A similar case may have played out in the study area.…”

Section: Discussionmentioning

confidence: 98%

Assessment of land-cover changes and carbon sequestration potentials of tree species in j4 section of Omo Forest Reserve, Ogun State, Nigeria

Adeyemi¹,

Adeleke²

2020

ijs

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We evaluated carbon stock accumulation on potential of tree species in five forest-types in Omo Forest Reserve of western Nigeria. This included four forest plantations and a natural forest of mixed species. The reserve was stratified into Gmelina arborea, Tectona grandis, Pinus carebeae and Nauclea diderrichii plantations as well as natural forest. Each forest-type was assessed using circular plot method. Plot points were pre-determined using remote sensing. For each point, two circular plots were established, the main plot with a radius of 12.61 m (500 m2 ) and the subplot with a radius of 5.64 m (100 m2 ). In each plot, tree Dbh and height were measured for trees with Dbh ≥10 cm, while only trees with Dbh <10 cm but >2 cm (i.e. 2 cm ≤ Dbh < 10 cm) were considered in the sub-plot. Soil samples were also collected at 10 locations with 2 each in the north, south, east, west and at the plot centre, in each forest-type. The samples were analysed to obtain soil organic carbon. Above- and belowground biomass and carbon stocks were estimated using the appropriate allometries formulated for the tropics. All empirical relationships were included in the existing allometries with Dbh and height as predictors. Landsat images of the reserve in 1991, 2000, 2014 and 2019 were processed and analysed to assess forest degradation. The results revealed that 23-year-old Pinus caribaea plantation sequestered more carbon (35.78±2.73 tons/ha) than 35-year-old Gmelina arborea (18.96±1.82 tons/ha), 43-year-old Tectona grandis (17.75±2.13 tons/ha) and 43-year-old Nauclea diderrichii (17.36±1.87 tons/ha) plantations and natural forest (21.98±2.38 tons/ha). The study showed that stand density influences carbon stock accumulation of forest. It was observed that individual stems of Pinus caribaea were better carbon accumulators than Gmelina arborea, Tectona gransdis and Nauclea diderrichii. The same trend was observed for CO2 captures as Pinus caribaea captured 131.31±10.02 tons/ha with Nauclea diderrichii the least, having a value of 63.71±6.9 tons/ha. Keywords: Biomass, Carbon stock, Degradation, Forest-type, Stand density

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Section: Discussionmentioning

confidence: 98%

Assessment of land-cover changes and carbon sequestration potentials of tree species in j4 section of Omo Forest Reserve, Ogun State, Nigeria

Adeyemi¹,

Adeleke²

2020

ijs

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“…Conversely, the other two classes of agricultural field and light forest faced a slight increment of 1415.27 ha (33.9%) to 1440.54 ha (34.5%) and of 1287.02 ha (30.9%) to 1406.52 ha (33.7%), respectively. Another study conducted in Nigeria showed that Taungya system is beneficial for forest conservation and regeneration (Azeez et al, 2017). In contrast, the agricultural field and light forest, which were the dominant classes in 2011 with areas of 1550.79 ha (37.2%) and 1435.68 ha (34.4%) were decreased to 780.75 ha (18.7%) and 1289.97 (30%) respectively in 2021.…”

Section: Forest Cover Change Detectionmentioning

confidence: 99%

“…Taungya system is one of agroforestry systems, where annual crops are growing alongside forestry trees during the initial stages of forest plantation establishment (Azeez et al, 2017). The system was originally generated in Myanmar in the early 19 th century (Acheampong et al, 2016) and has been widely used in some countries as an effective and inexpensive technology for the rehabilitation of the forest cover and livelihood improvement for farmers (Fatma et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Assessment of Taungya agroforestry system in dryland forests rehabilitation in Sudan

Hemida

Yasin²,

Kheiry³

et al. 2023

J. Degrade. Min. Land Manage.

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The decline of the forest cover due to deforestation and agricultural expansion in Sudan has reached a critical situation. Taungya agroforestry systems have been used as a strategy to safeguard against this process, allowing farmers to cultivate their subsistence crops at the early stage of tree plantations. The current study research tackled Nabag Forest Reserve (NFR) as a case study to assess and explore Taungya agroforestry system as a practice used for forest rehabilitation in the study area. Satellite images of Landsat 5 Thematic Mapper, and Landsat 8 Operational Land Imager/Thermal Infrared Sensor of 1991, 2001, 2011, and 2021 were used to generate forest cover maps. Both unsupervised and supervised classification, as well as ground truth points, were applied to classify the vegetation cover in NFR as dense forest (DF), light forest (LF), agricultural field (AF), and bare land (BL). The results showed that two trends of forest cover changes occurred in NFR between 1991-2001 and 2011-2021. It was well explored that through Taungya agroforestry, there was a considerable increase in forest cover over this period. This could be clearly detected by increasing dense forest and light forest cover by 1041.73 ha (24.95%) and 2.95 ha (0.07%), respectively and decreasing of bare land and agricultural field by 409.79 ha (9.81%) and 634.52 ha (15.15%) during the addressed period. The findings of the study indicated that Taungya agroforestry system could be a feasible land-use alternative for forest recovery in the dry land of Sudan.

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“…Salih [39] also reported that the Taungya program positively contributed to rehabilitating 3024 ha of NFR between 2005 and 2013. Similarly, a study from Nigeria highlighted the advantages of the Taungya system in promoting forest conservation and regeneration [40]. Conversely, light forest cover decreased from 34.4% in 2011 to 30.9% in 2021, with a net change of 3.5% and an annual decline rate of 0.35%.…”

Section: Assessment Of Land Use/land Cover Changementioning

confidence: 99%

Assessment and Mapping of Forest Cover Change in Dryland, Sudan Using Remote Sensing

H.E. Yasin,

Kornel,

Hemida

2024

Environmental Sciences

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Forest resources in the arid and semi-arid of Sudan are experiencing significant fluctuations in tree cover and ecological functionality. This study aims to bridge this gap by utilizing multi-temporal Landsat imagery and mapping forest cover change in the Nabag Forest Reserve (NFR) in South Kordofan State, Sudan. For this assessment, two cloud-free images (TM from 2011 and OLI from 2021) were downloaded and analyzed using ArcMap 10.7 and ERDAS 2014 software. Supervised classification techniques were applied, corroborated by GPS point verification and field surveys, to quantify changes in forest cover over the decade. The results revealed that dense forest cover increased from 9% in 2011 to 38.9% in 2021, while light forest cover decreased from 34.4% in 2011 to 30.9% in 2021. Additionally, the area occupied by agriculture and barren land declined from 37.2% and 19.4% in 2011 to 18.7% and 11.5% in 2021, respectively. Rapid shifts were observed in all LULC categories during the study period. The primary causes of deforestation and forest degradation were tree felling, unsustainable grazing practices, and construction activities. These findings are crucial for guiding future forest rehabilitation and creating targeted management plans for the local communities reliant on these forests.

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An assessment of the forest regeneration potential of the taungya system of farming in Oyo State, south-western Nigeria

Cited by 8 publications

References 4 publications

Assessment of land-cover changes and carbon sequestration potentials of tree species in j4 section of Omo Forest Reserve, Ogun State, Nigeria

Assessment of land-cover changes and carbon sequestration potentials of tree species in j4 section of Omo Forest Reserve, Ogun State, Nigeria

Assessment of Taungya agroforestry system in dryland forests rehabilitation in Sudan

Assessment and Mapping of Forest Cover Change in Dryland, Sudan Using Remote Sensing

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