Silvicultural Methods Effects on the 82 Year Old Planted Pericopsis elata (Fabaceae) and Entandrophragma cylindricum (Meliaceae) Dendrometry in Yangambi Region, DR Congo
American Journal of Bioscience and Bioengineering
Volume 8, Issue 4, August 2020, Pages: 70-83
Received: Jun. 28, 2020; Accepted: Jul. 25, 2020; Published: Oct. 14, 2020
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Authors
Likoko Bambele Alexandre, Yangambi INERA, Natural Resources National Research Program, Kisangani, DR Congo
Lokonda Omatela Michel, Yangambi INERA, Natural Resources National Research Program, Kisangani, DR Congo
Mbasi Michel, Forestry Department, ISEA Bengamisa, Kisangani, DR Congo
Lonema Chuda Adelar, Yangambi INERA, Natural Resources National Research Program, Kisangani, DR Congo
Alongo Longomba Sylvain, Soil and Water Department, Laboratory of Agro-ecology and Ingineering of Environment, Agronomic Faculty Institute (IFA-Yangambi), Kisangani, DR Congo
Kombele Bishosha Ferdinand, Soil and Water Department, Laboratory of Agro-ecology, Pedolandscape and Agricultural System, IFA-Yangambi, Kisangani, DR Congo
Boyemba Bosela Faustin, Ecology and Vegetal Resources Management Department, University of Kisangani, Kisangani, DR Congo
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Abstract
The effects of four silvicultural methods notably Layon, Blanc-Etoc (BE), Martineau and assisted natural regeneration (ANR) have been compared on the dendrometric traits of Pericopsis elata Harms and Entandrophragma cylindricum Sprague planted in 1938 in Yangambi for controlling anthropogenic activities (agricultural deforestation and forest degradation) threatening the species to extinction added to difficult natural regeneration. The sustainable pedo-silvicultural system will preserve Yangambi biosphere reserve. In case of variance analysis significance; the non-parametric test of Kruskal Wallis and the test of Tukey Honest Significant Differences were applied to separate the traits means. Results have revealed that the three plantation methods were significantly different from ANR. BE, Martineau and Layon have determined the Gaussian shape for P. elata diametric structures while Layon, Martineau and ANR presented the inversed J shape for E. cylindricum. BE method convenes for plantations of the two species whose trait values were higher than those of other methods. The difference was significant between the widest average breast height diameter (DBH) of 44.49±10.63cm with the total height mean of 24.46±4.45m for P. elata and DBH of 29.63±11.59cm with the total height mean of 22.04±5.80m for E. cylindricum. The differences were also identified respectively for the two species regarding the basal areas with 25.54±5.6 against 9.474±1.67 m2/ha, the aboveground biomasses with 318.81±77.2 against 94.315±11.59t/ha and the loose volumes with 45069.49±12219.30 against 14 471.348±3 645.692m3/ha. The Layon method did not have significant effect on the E. cylindricum, but has influenced the DBH, AGB and basal area of P. elata. The least productive method ANR has expressed a convenient natural regeneration inversed J shape for the two species, as related to Yangambi reserve preservation.
Keywords
Silvicultural Methods, Dendrometric Traits, Pericopsis elata Harms, Entandrophragma cylindricum Sprague, Tropical Humid Dense Forest, Yangambi Biosphere Reserve and DR Congo
To cite this article
Likoko Bambele Alexandre, Lokonda Omatela Michel, Mbasi Michel, Lonema Chuda Adelar, Alongo Longomba Sylvain, Kombele Bishosha Ferdinand, Boyemba Bosela Faustin, Silvicultural Methods Effects on the 82 Year Old Planted Pericopsis elata (Fabaceae) and Entandrophragma cylindricum (Meliaceae) Dendrometry in Yangambi Region, DR Congo, American Journal of Bioscience and Bioengineering. Vol. 8, No. 4, 2020, pp. 70-83. doi: 10.11648/j.bio.20200804.12
Copyright
Copyright © 2020 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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