Floristic and dendrometric analysis of woodlands in the Sudano-Guinean zone: a case study of Belléfoungou forest reserve in Benin

G. Houeto, B. Fandohan, A. Ouédraogo, E. E. Ago, V. Salako, A. Assogbadjo, R. G. Glèlè Kakaï, B. Sinsin
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引用次数: 15

Abstract

Abstract A floristic and dendrometric analysis was carried out using 15 square plots of 1 ha each in the Belléfoungou forest reserve, located in the Sudano-Guinean zone of Benin. Species and diameter at breast height of trees were recorded. Multidimensional scaling and importance value index of species were used to identify vegetation types in the reserve: (1) Isoberlinia tomentosa-dominated vegetation type, (2) Isoberlinia doka and Burkea africana-dominated vegetation type and (3) Vitellaria paradoxa and Isoberlinia doka-dominated vegetation type. Significant differences were noted between the three vegetation types with respect to the basal area of trees. This varied from 8.55 m2/ha (vegetation type 3) to 13.36 m2/ha (vegetation type 2). The overall woody species richness was 57 species. The stem diameter structures of all three vegetation types showed an inverse “J” shape, suggesting that the study reserve has stable natural vegetation with relatively more young stems than large stems. Setting and implementation of a sustainable management plan, and supervision reinforcement were suggested to enable conservation of the Belléfoungou forest reserve.
苏丹-几内亚地区林地的植物区系和树木组学分析:以贝宁bell foungou森林保护区为例
摘要对位于贝宁苏丹-几内亚地区的bell foungou森林保护区的15个样地进行了植物区系和树木组学分析。记录了树木的种类和胸高直径。利用多维尺度和物种重要值指数对保护区的植被类型进行了划分,分为:(1)以毛毡异色莲为主的植被类型,(2)以多卡异色莲和非洲布克兰为主的植被类型,(3)以沙刺莲和多卡异色莲为主的植被类型。三种植被类型的树木基底面积差异显著。植被丰富度为8.55 ~ 13.36 m2/ha(植被类型3),总体丰富度为57种。3种植被类型的茎粗结构均呈反“J”型,表明研究保护区具有稳定的天然植被,幼茎多于大茎。建议制定和实施可持续的管理计划,并加强监督,使贝尔萨芬古森林保护区得到保护。
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