%0 Journal Article
%T Soils Typology and Floristic Diversity of the Forest of the ¡°Cité Scientifique¡± of Brazzaville, Congo
%A Nzila Jean de Dieu
%A Kimpouni Victor
%A Watha-Ndoudy No£¿l
%A Nanitelamio Mich¨¨le Mercia
%A Yallo Mouhamed Salisou
%A Nguila-Ntsoko Diane Prudence
%J Open Journal of Ecology
%P 286-304
%@ 2162-1993
%D 2018
%I Scientific Research Publishing
%R 10.4236/oje.2018.84018
%X A study of the typology of soils and floristic
diversity was carried out in the forest of the ¡°Cit¨¦ Scientifique¡± of
Brazzaville. The study aimed to assess the influence of soil cover on the
distribution of taxa. The study covers 18 plots of 625 m<sup><span style=\"font-family:Verdana;\">2</span></sup><span style=\"font-family:Verdana;font-size:12px;\"> each,
distributed in different soil profiles. The floristic inventory concerns the
measurement of diameter of trees with dbh ¡Ý 10 cm and the counting of
herbaceous and shrubs of dbh &lt; 10 cm. The floristic composition reveals a
total of 129 plant species distributed in 48 families dominated by Fabaceae and
a preponderance of pioneer taxa. The Jaccard coefficients of similarity reveal
a low degree of homology of woody plots, whereas for the flora as a whole, the
floristic composition is heterogeneous. The Shannon biological diversity index
of ligneous varies from 0.6 to 2, against a maximum diversity of 0.69 to 3. The
Pielou index of ligneous (0.5 to 0.9) does not reveal any dominance. Soil cover
consists of ferrallitic and podzol soils. Their texture is sandy, weakly
structured, fragmentary polyhedral throughout the profile, but lumpy and/or
nuciform at the surface and sub angular in depth. The porosity decreases
proportionally with the depth and thickness of the horizons. The floristic
analysis presents an ecosystem with a low degree of diversification for a high
floristic richness. The preponderance of anthropization markers is a proof of
its very advanced state of disturbance. The study shows that soil cover does
not influence the distribution of timber. Indeed, the establishment and development
of pioneer species </span><span style=\"font-family:Verdana;\">are</span><span style=\"font-family:Verdana;\"> less prone to soil
properties.</span>
%K Congo
%K Soil Cover
%K Floristic Diversity
%K Urban Forest
%K Biological Diversity Index
%K Distribution of Taxa
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=84187