The conservation status of Pterocarpus angolensis D.C in Nguru ya Ndege Forest Reserve, Morogoro-Tanzania Robert Modest M.Sc.
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Date
2006-07
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Addis Ababa University
Abstract
A study was carried out in Nguru ya Ndege Forest Reserve, Morogoro- Tanzania. Simple
random sampling method was applied in sampling of the vegetations. Objectives of this study
were to determine the spatial distribution and population structure of P. angolensis in Nguru
ya Ndege Forest Reserve, and to assess the density and the extent of exploitation of P.
angolensis in Nguru ya Ndege Forest Reserve. A total of 102 woody species were recorded
during the study falling in 71 genera and 30 families. The results showed that; the population
density of P. angolensis in Nguru ya Ndege Forest Reserve was 19 stems/ha for individuals
with DBH 4 cm. The plot of DBH class distribution showed a characteristic inverted J
shape for P. angolensis, although the trend seemed interrupted. From the generated ArcView
map it was observed that the distribution of P. angolensis in Nguru ya Ndege Forest Reserve
was not even as quadrats into which the species was recorded seemed concentrated more in
the higher altitudes of the reserve than lower plains. It was also found that, mature individuals
of P. angolensis in Nguru ya Ndege Forest Reserve are being selectively removed for timber
sawing. This study concluded that, the store of P. angolensis in Nguru ya Ndege Forest
Reserve is still promising, and its population structure might show a normal trend in future if
the forest is put in a well-managed regime. This study recommended among others, to
transplant seedlings of P. angolensis especially in the northern, western and southern parts in
order to restore those denuded areas of the reserve.
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Biology