Floristic Diversity and Natural Regeneration of Miombo Woodlands in the Rural Area of Lubumbashi, D.R. Congo

Author:

Nghonda Dieu-donné N’tambwe12ORCID,Muteya Héritier Khoji12ORCID,Salomon Waselin3ORCID,Mushagalusa Fidèle Cuma1,Malaisse François2ORCID,Ponette Quentin4ORCID,Sikuzani Yannick Useni1ORCID,Kalenga Wilfried Masengo1,Bogaert Jan2ORCID

Affiliation:

1. Ecology, Ecological Restoration and Landscape Unit, Faculty of Agronomic Sciences, University of Lubumbashi, Lubumbashi 1825, Democratic Republic of the Congo

2. Biodiversity, Ecosystem and Landscape Unit, University of Liège—Gembloux Agro-Bio. Tech., 5030 Gembloux, Belgium

3. Henri Christophe Campus of Limonade, State University of Haiti, 1130, National Route # 6 Limonade, Limonade HT 1130, Haiti

4. Earth and Life Institute, Catholic University of Louvain, 1348 Louvain-la-Neuve, Belgium

Abstract

Increased anthropogenic pressure on forest resources leads to deforestation and forest degradation, significantly limiting the regeneration capacity of native woody species and consequently the restoration of miombo woodlands in anthropized habitats within the rural area of Lubumbashi. This study assessed miombo species’ diversity and natural regeneration capacity through floristic inventories in three different habitats (unexploited forests, degraded forests, and post-cultivation fallows). The results reveal that for the adult stratum, unexploited and degraded forests exhibit higher dendrometric (density, mean square diameter, basal area) and floristic parameter (taxa, genera, families) values compared to post-cultivation fallows. Furthermore, the regeneration of miombo woody species is higher in degraded forests (21 taxa; 105 juveniles/plot). However, regarding the sapling’s stratum (1 cm ≤ dbh < 10 cm), the three habitats display similar situations. Additionally, the floristic composition and diversity of unexploited and degraded forests show a significantly higher similarity (76.50%) among them compared to these habitats and the post-cultivation fallows (56.00%). These findings indicate that miombo woodlands have the potential to regenerate and maintain floristic diversity even in anthropized habitats, particularly in degraded forests. To sustain this natural regeneration capacity of miombo woody species and promote the restoration of forest cover and its floristic diversity, it is imperative to determine the rotation period after habitat exploitation and regulate anthropogenic activities and late bush fires, particularly in anthropized habitats at the village level.

Funder

CHARLU

Publisher

MDPI AG

Reference86 articles.

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2. Floristic composition, species diversity and carbon storage in charcoal and agriculture fallows and management implications in Miombo woodlands of Zambia;Kalaba;For. Ecol. Manag.,2013

3. FAO (2022). La Situation des forêts du monde 2022. Des Solutions Forestières Pour une Relance verte et des Économies Inclusives, Résilientes et Durables, FAO.

4. First vegetation-plot database of woody species from Huíla province, SW Angola;Chisingui;VCS,2021

5. Berrahmouni, N., Regato, P., and Parfondry, M. (2015). Global Guidelines for the Restoration of Degraded Forests and Landscapes in Drylands: Building Resilience and Benefiting Livelihoods, FAO.

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