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\hypersetup{pdftitle={Indigenous Tree Uses, Use"=Values and Impact of Human Population on Forest Size, Structure and Species Richness in Uluguru, Morogoro, Tanzania},pdfauthor={David Sylvester Kacholi},pdfsubject={Tropentag 2016: Abstract},pdfkeywords={Biodiversity, community, conservation, disturbance, eastern Arc, medicinal value},pdfpagemode=None,colorlinks=true}
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\parbox[b]{13.4cm}{\centering \large{\textbf{Tropentag, September 18-21, 2016, Vienna, Austria}}\\[1ex] \Large{``Solidarity in a competing world ---\\fair use of resources''\\[2ex]}}
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\Large{\textbf{Indigenous Tree Uses, Use"=Values and Impact of Human Population on Forest Size, Structure and Species Richness in Uluguru, Morogoro, Tanzania\footnote{\textbf{Contact Address:} David Sylvester Kacholi, Dar es Salaam University College of Education (DUCE), Biological Sciences, P.O. Box 45926, Dar es Salaam, Tanzania, \mbox{e-mail}: \email{kacholi78@yahoo.com}}\\[0.8ex]}}
\normalsize{\textsc{David Sylvester Kacholi}}
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\begin{itemize*}
\item[]{\small{\textit{Dar es Salaam University College of Education (DUCE), Biological Sciences, Tanzania}}}
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\index[author]{Kacholi, David Sylvester}
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\textbf{Abstract}
\begin{abstract}
\normalsize{
This study assesses tree uses and use"=values as well as the impact of human population on the forest size, species richness, basal area and stand density in the Uluguru forests in Morogoro Region. Interviews with locals on tree uses were done using structured questionnaires and use"=value analysis techniques were used in analysing data. Trees with a diameter at breast height  $\geq$ \mbox{10\,cm} measured at \mbox{1.3\,m} above the ground were sampled from a total of 114 plots of 20 m\,$\times$\,\mbox{20\,m} (\mbox{0.04\,ha}) from the seven forests. A total of 42 species belonging to 20 families were listed being useful for the local livelihoods. Of the listed species, \mbox{88\,\%} serve more than one function while \mbox{64\,\%} are used for firewood and charcoaling, \mbox{45\,\%}, and \mbox{40\,\%}, are used for timber and medicinal purposes, respectively. \textit{Milicia excelsa} and \textit{Sterculia quinqueloba} had highest and lowest total use"=value, respectively. \textit{Ocotea usambarensis} is known to treat \mbox{29\,\%} of diseases while \mbox{47\,\%} and \mbox{25\,\%} of the species with medicinal values are used to treat stomach"=ache and dysentery. Roots are the most utilised tree part for making traditional medicines, followed by barks and leaves. The human population density revealed a significant negative correlation with forest size (r = -0.90), species richness (r = -0.78), and stand density (r = -0.75). The study suggests for control of human population and their associated activities, provision of awareness on sustainable utilisation of forest resources, use of alternative source of energy by locals and active involvement of the locals in management and conservation programmes.}

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\noindent \textbf{Keywords:} Biodiversity, community, conservation, disturbance, eastern Arc, medicinal value
\index[key]{Biodiversity}
\index[key]{Forest!community}
\index[key]{Conservation}
\index[key]{Medicinal value}
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