%0 Journal Article
%T Spatial Analysis of the Woody Flora of the Djoumouna Peri-urban Forest, Brazzaville (Congo)
%J -
%D 2019
%X The spatial analysis of the flora of the peri-urban forest of Djoumouna has been conducted in Brazzaville, Congo. Data collection, conducted from April to August 2017, is based on a floristic inventory of 75 plots of each 400 m2 (20 m x 20 m). The study shows 898 trees of dbh ¡Ý 10 cm corresponding to 106 species and 36 families. The number of individuals per plot averages 11.97 ¡À 0.42 feet/plot while the number of species per plot averages 7.37 ¡À 0.30. The land used by projecting the trunk sections is on average 0.74 ¡À 0.05 m2/plot. The Jaccard similarity coefficient between plots is between 0 and 75% while the average Skewness is 1.26 ¡À 0.11. The average Shannon index is 1.77 ¡À 0.05 per plot with an average maximum diversity of 1.93 ¡À 0.04. The average Pielou index is 0.91 ¡À 0.01. The absolute diversity index averages 6.54 ¡À 0.29 while ¦Á-Fisher averages 11.44 ¡À 1.39. The average value of the Green index is -0.04 ¡À 0.01 and finally 7.55% of taxa have a rarefaction index of species between 40 and 77% compared to 92.45% where this index varies from 81 to 99%. The upward hierarchical classification and the AFC highlight the presence of floristic subfacies resulting from taxa independence. Since most species have a density of less than 1 tree.ha-1, the floristic composition is heterogeneous, resulting in insufficient natural regeneration and low resilience of this ecosystem threatened with extinction in the very short term
%K Congo
%K Peri-urban Forest
%K Plant Diversity
%K Bio-Ecological Diversity Indices
%K Structural Parameters
%U http://www.sciencepublishinggroup.com/journal/paperinfo?journalid=231&doi=10.11648/j.eeb.20190401.11