[ Analyse structurale des diamètres de Musanga cecropioides, Prioria balsamifera
et Prioria oxyphylla et leur vulnérabilité face à l’exploitation illicite dans la réserve forestière de Yoko (Ubundu, République Démocratique du Congo) ]
Volume 33, Issue 1, October 2017, Pages 141–147
Christophe B. Lomba1, Bijou Lituka Yalufi2, Justin A. Asimonyio3, and Koto-te-Nyiwa Ngbolua4
1 Faculté des Sciences, Université de Kisangani, RD Congo
2 Département d’Ecologie et Gestion des Ressources Végétales, Faculté des Sciences, Université de Kisangani, B.P. 2012 Kisangani, RD Congo
3 Centre de Surveillance de la Biodiversité, Université de Kisangani, RD Congo
4 Département de Biologie, Faculté des Sciences, Université de Kinshasa, BP 190 Kinshasa XI, RD Congo
Original language: French
Copyright © 2017 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
The present study is based on the structural analysis of the diameters of the three species: Musanga cecropioides R.BR, (Parasolier), Prioria balsamifera (Vermoesen) Breteler (Tola) and Prioria oxyphylla (Harms) Breteler (Tchitola) Illegal settlements by people living on the Yoko Forest Reserve. P. balsamifera and P. oxyphylla do not have a good regeneration, M. secropioides to a trend towards a good generation but does not have individuals from class 9. The results show that M. cecropioides is declared non-vulnerable (94.5%) in Yoko while P. balsamifera and P. oxyphylla are said to be vulnerable. This is explained by the low vulnerability index obtained for these two species, ie 30.9% and 26.7%.
Author Keywords: Forest, exploitation with reduced impact, plant species, minimum diameter, diametric structure, Democratic Republic of Congo.
Volume 33, Issue 1, October 2017, Pages 141–147
Christophe B. Lomba1, Bijou Lituka Yalufi2, Justin A. Asimonyio3, and Koto-te-Nyiwa Ngbolua4
1 Faculté des Sciences, Université de Kisangani, RD Congo
2 Département d’Ecologie et Gestion des Ressources Végétales, Faculté des Sciences, Université de Kisangani, B.P. 2012 Kisangani, RD Congo
3 Centre de Surveillance de la Biodiversité, Université de Kisangani, RD Congo
4 Département de Biologie, Faculté des Sciences, Université de Kinshasa, BP 190 Kinshasa XI, RD Congo
Original language: French
Copyright © 2017 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
The present study is based on the structural analysis of the diameters of the three species: Musanga cecropioides R.BR, (Parasolier), Prioria balsamifera (Vermoesen) Breteler (Tola) and Prioria oxyphylla (Harms) Breteler (Tchitola) Illegal settlements by people living on the Yoko Forest Reserve. P. balsamifera and P. oxyphylla do not have a good regeneration, M. secropioides to a trend towards a good generation but does not have individuals from class 9. The results show that M. cecropioides is declared non-vulnerable (94.5%) in Yoko while P. balsamifera and P. oxyphylla are said to be vulnerable. This is explained by the low vulnerability index obtained for these two species, ie 30.9% and 26.7%.
Author Keywords: Forest, exploitation with reduced impact, plant species, minimum diameter, diametric structure, Democratic Republic of Congo.
Abstract: (french)
Cette étude se base sur l’analyse structurale des diamètres des trois essences : Musanga cecropioides R.BR, (Parasolier), Prioria balsamifera (Vermoesen) Breteler (Tola) et Prioria oxyphylla (Harms) Breteler (Tchitola) et leur vulnérabilité face à leur exploitations illicites par les populations riveraines de la réserve forestière de Yoko. P. balsamifera et P. oxyphylla n’ont pas une bonne régénération, M. secropioides à une tendance allant vers une bonne génération mais n’a pas d’individus à partir de classe 9. Le résultat obtenu montre que l’essence M. cecropioides est déclarée non vulnérable (94,5%) à Yoko alors que P. balsamifera et P. oxyphylla sont dites vulnérables. Ceci s’explique par le faible indice de vulnérabilité obtenu pour ces deux dernières essences, soit 30,9% et 26,7%.
Author Keywords: Forêt, exploitation à impact réduit, essence, diamètre minimum, structure diamétrique, République Démocratique du Congo.
How to Cite this Article
Christophe B. Lomba, Bijou Lituka Yalufi, Justin A. Asimonyio, and Koto-te-Nyiwa Ngbolua, “Structural analysis of the diameters of Musanga cecropioides, Prioria balsamifera and Prioria oxyphylla and their vulnerability towards illicit exploitation in the Yoko forest reserve (Ubundu, Democratic Republic of the Congo),” International Journal of Innovation and Scientific Research, vol. 33, no. 1, pp. 141–147, October 2017.
