Carbon sequestration; Climate change; Exotic species; Forest restoration; Growth performance; Large-scale tree-plantation; Native species; Yangambi landscape; Congo basins; Large-scales; Tree plantations; Environmental Engineering; Nature and Landscape Conservation; Management, Monitoring, Policy and Law
Abstract :
[en] Decades of deforestation and unsustainable land use have created extensive areas of degraded and deforested land across the central Congo Basin, contributing substantially to climate change and biodiversity loss. Recently, nature-based solutions have gained increasing interest, particularly those focusing on forest restoration for long-term carbon sequestration and additional societal benefits for human well-being. Thus, forest restoration, especially with native species, offers a viable pathway to address environmental and social challenges while supporting local communities. However, both technical and scientific knowledge about many native species' performance in large-scale plantations, which could serve the current and future needs of central African countries, is currently lacking. To address these knowledge gaps, we established an experimental plantation in Yangambi, Democratic Republic of the Congo, to evaluate the potential of native tree species in comparison with the fast-growing exotic species Acacia auriculiformis, which is often planted in monoculture at a large-scale in the central Congo Basin. From 37 promising native species initially selected, the seeds of 19 were successfully harvested from the natural forest. Among these, 16 species yielded sufficient seedlings in the nursery and were planted in the field. After five years, five native species (Pachyelasma tessmannii, Piptadeniastrum africanum, Irvingia smithii, Ongokea gore, and Canarium schweinfurthii) demonstrated growth, survival, and carbon sequestration performance comparable to Acacia auriculiformis. This illustrates that local tree species are promising alternatives for exotic species. Nevertheless, further research is necessary to optimize the large-scale production of native seedlings, including improving seed conservation and nursery techniques. Drawing on the ongoing forest restoration initiatives in Yangambi, we emphasize the importance of integrating local knowledge and actively involving local communities to ensure the successful implementation and long-term sustainability of tree-planting efforts, benefiting both nature and human well-being.
Disciplines :
Environmental sciences & ecology
Author, co-author :
Djiofack, Brice Yannick; Royal Museum for Central Africa, Service of Wood Biology, Tervuren, Belgium ; Ghent University, Faculty of Bioscience Engineering, Department of Environment, Laboratory of Wood Technology (UGent-Woodlab), Gent, Belgium ; Wood Laboratory of Yangambi, Yangambi, Congo
Bourland, Nils ; Université de Liège - ULiège > Forêts, Nature et Paysage > Laboratoire de Foresterie des régions tropicales et subtropicales
Beeckman, Hans; Royal Museum for Central Africa, Service of Wood Biology, Tervuren, Belgium ; Wood Laboratory of Yangambi, Yangambi, Congo
Cerutti, Paolo Omar; Center for International Forestry Research (CIFOR), Kisangani, Congo
Fai, Collins Dzernyuy; Center for International Forestry Research (CIFOR), Kisangani, Congo
Van Hulle, Martin; Resources & Synergies Development Pte Ltd, Singapore
Pierson, Mathilde; Resources & Synergies Development Pte Ltd, Singapore
Mayaux, Jules; Resources & Synergies Development Pte Ltd, Singapore
Luambua, Nestor Kashikija; Wood Laboratory of Yangambi, Yangambi, Congo
Musepena, Donatien; Wood Laboratory of Yangambi, Yangambi, Congo ; Institut National pour l'Études et la Recherche Agronomiques (INERA), Kinshasa, Congo
Laurent, Félix; Royal Museum for Central Africa, Service of Wood Biology, Tervuren, Belgium ; Ghent University, Faculty of Bioscience Engineering, Department of Environment, Laboratory of Wood Technology (UGent-Woodlab), Gent, Belgium ; Wood Laboratory of Yangambi, Yangambi, Congo
Ilondea, Bhely Angoboy; Institut National pour l'Études et la Recherche Agronomiques (INERA), Kinshasa, Congo ; Université Pédagogique Nationale, Kinshasa, Congo
Van den Bulcke, Jan; Ghent University, Faculty of Bioscience Engineering, Department of Environment, Laboratory of Wood Technology (UGent-Woodlab), Gent, Belgium
Hubau, Wannes; Royal Museum for Central Africa, Service of Wood Biology, Tervuren, Belgium ; Ghent University, Faculty of Bioscience Engineering, Department of Environment, Laboratory of Wood Technology (UGent-Woodlab), Gent, Belgium ; Wood Laboratory of Yangambi, Yangambi, Congo
Centre for International Forestry Research EC - European Commission
Funding text :
This study was conducted within the framework of the PilotMAB and PilotMABplus projects, implemented by the Royal Museum for Central Africa (RMCA), with the financial support of the Belgian Directorate-General for Development Cooperation and Humanitarian Aid (DGD). The experiment was set up within the framework of the FORETS project (EEC40), led by the Center for International Forestry Research (CIFOR) and funded by the European Union. We thank Quentin Ducenne and Resources & Synergies Development Pte Ltd. (R&SD) for coordinating and providing logistical support for the nursery and experiment setup. Our gratitude extends to the technicians of INERA-Yangambi for their fieldwork contributions. We thank Toon Gheyle for his help during sample preparation and for supporting the scanning process and wood density extraction.
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