THE CARBON STOCKS OF TROPICAL FOREST RESERVES: AN ALLOMETRIC ANALYSIS OF OBA HILL PLANTATION, OSUN STATE, SOUTH-WEST NIGERIA

A.S.O. SONEYE, A.O. DARAMOLA, A.O. IDOWU

Abstract



Forest ecosystems are significantly involved in the flow of carbon. Carbon is lost via deforestation and forest degradation, and can be sequestered at the same time by sustainable forest management. The study examined a Teak (Tectona grandis) plantation in Oba Hill Forest Reserve in Osun State Nigeria with focus on the land use pattern in the forest reserve and an estimation of the carbon content of the plantation. Using basic tools of GIS, statistically valid estimates of the percentage cover classes within the study area were created. The above-ground carbon content of the trees were estimated using Allometric equations having taken measurements of their diameter at breast height (DBH).The entire forest reserve covers a 2 2 2 total of 52.9 km , of which 9.72 km still remained as natural forest, 33.8 km was grassland-cultivated-deforested land and 2 the planted forest (teak plantation) was about 9.4km . The plantation had an average tree density of 85 per hectare and total carbon content of 1,266.79tCO e at about 1.347tCO /ha. With a significant portion of the forest reserve already depleted 2 2 and converted to cultivated land, there is a need to strengthen forest management and restore the capacity of the forest to maintain its primary role of bio-diversity conservation and climate change mitigation.

Keywords


Landuse, Carbon, Forestry, Teak

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