Impact of Land Use Change on Tree Diversity and Aboveground Carbon Storage in the Mayombe Tropical Forest of the Democratic Republic of Congo

Opelele Omeno Michel, Ying Yu, Wenyi Fan, Tolerant Lubalega, Chen Chen and Claude Kachaka Sudi Kaiko
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Opelele Omeno Michel: School of Forestry, Northeast Forestry University, Harbin 150040, China
Ying Yu: School of Forestry, Northeast Forestry University, Harbin 150040, China
Wenyi Fan: School of Forestry, Northeast Forestry University, Harbin 150040, China
Tolerant Lubalega: Institut National Pour l’Étude et la Recherche Agronomiques (INERA/Luki), Antenne de Gestion et Conservation des Ressources Naturelles, Luki 03106, Democratic Republic of the Congo
Chen Chen: School of Forestry, Northeast Forestry University, Harbin 150040, China
Claude Kachaka Sudi Kaiko: Department of Natural Resources Management, Faculty of Agricultural Sciences, University of Kinshasa, Kinshasa 01302, Democratic Republic of the Congo

Land, 2022, vol. 11, issue 6, 1-19

Abstract: The Mayombe tropical forest has experienced dramatic changes over several decades due to human activities. However, the impact of these changes on tree biodiversity and ecosystem services has not been studied yet. Such a study could advance the current knowledge on tree biodiversity and carbon storage within the Mayombe forest, which is presently under high anthropogenic pressures. This information could benefit decision-makers to design and implement strategies for biodiversity conservation and sustainable natural resource utilization. As such, biodiversity surveys were conducted within the forest under different land utilization regimes. To evaluate the effect of human utilization on tree biodiversity and ecosystem services (carbon storage), land was classified into three categories based on the intensity of human utilization: low utilization, moderate utilization, and high utilization. Additionally, the study evaluated the recovery potential of the disturbed forest under both moderate and high utilization, after abandonment for 10 and 20 years. Tree diameter and height were measured for all trees whose diameter at breast height was greater than or equal to 10 cm. Our findings revealed that forest land with both high and moderate utilization regimes, and having no regulation, resulted in the decline of tree species richness, tree species diversity, and carbon storage. The magnitude of decrease was greater in high utilization compared to moderate utilization regimes. On the other hand, high values of biodiversity indices and carbon storage were observed in the low utilization regime. This study also demonstrated that fallow land that had been left undisturbed for more than 10 years, but had experienced both high and moderate utilization regimes, could reasonably recover carbon storage, and an acceptable level of tree species biodiversity can be achieved. However, there remains a significant difference when compared with the original level in the low utilization regime, suggesting that the Mayombe forest takes longer to recover. Based on the findings on tree biodiversity and carbon storage over the recovery trajectory, this study improves the understanding of the degraded forest restoration process within the Mayombe forest. It is therefore necessary to formulate new strategies to regulate forest land utilization within the Mayombe forest. This will ensure sustainability and availability of all ecosystem services this forest provides to a human population that strongly depends on it for their survival.

Keywords: tree biodiversity; carbon storage; Mayombe forest; land use change; ecosystem services (search for similar items in EconPapers)
JEL-codes: Q15 Q2 Q24 Q28 Q5 R14 R52 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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