[ Teneur en eau du sol et diversité floristique sous plantations d’Eucalyptus saligna Smith (Myrtaceae) à l’Ouest Cameroun ]
Volume 24, Issue 1, August 2018, Pages 368–378
Lucie Félicité TEMGOUA1, Marie Caroline MOMO SOLEFACK2, Rodine TCHIOFO3, and Isaac Blaise DJOKO4
1 Université de Dschang, Faculté d’Agronomie et de Sciences Agricoles, Département de Foresterie, Dschang, Cameroon
2 Université de Dschang, Faculté de Science, Département de Biologie végétale, Dschang, Cameroon
3 Filière des Métiers du Bois de l’Eau et de l’Environnement, Faculté d’Agronomie et de Sciences Agricoles, Ebolowa, Cameroon
4 Université de Dschang, Faculté d’Agronomie et de Sciences Agricoles, Département de Foresterie, Dschang, Cameroon
Original language: French
Copyright © 2018 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 eucalyptus plantations are experiencing considerable development in the world, but are also subject to controversy. The present study aimed to evaluate the floristic diversity and the allelopathic reflection of Eucalyptus saligna plantations in the Baleng forest reserve in Western Region of Cameroon. The experimental design consisted of five parcels, one control parcel and four parcels of Eucalyptus of different ages. In each of the five parcels, three plots of 9 m2 (3m x 3m) were randomly selected for the assessment of floristic diversity and soil sampling. In each plot, a circular section of 100 m deep hole was dug and soil samples were collected at three depths (20 cm, 50 cm and 100 cm). Soil analysis were made using the gravimetric method. It emerges from that study that the water content of soil decreases with the deep of soil and age of parcels. A total of 1593 individuals were recorded, grouped into 21 families and 55 species. The three most represented botanical families are Fabaceae (21%), Asteraceae (20%) and Poaceae (16%). But with regard to the number of individuals, the Poaceae family is the most represented with 36% of the individuals, followed by Asteraceae (21%) and Caryophyllaceae (11%). Herbaceous species are largely predominant (92% of individuals). There was no significant difference between the specific richness of the control plot and that of the eucalyptus plots at the 5% threshold (Turkey Test). Eucalyptus Saligna did not adversely affect the floristic composition of the understory vegetation.
Author Keywords: allelopathy, biodiversity, soil humidity, understory.
Volume 24, Issue 1, August 2018, Pages 368–378
Lucie Félicité TEMGOUA1, Marie Caroline MOMO SOLEFACK2, Rodine TCHIOFO3, and Isaac Blaise DJOKO4
1 Université de Dschang, Faculté d’Agronomie et de Sciences Agricoles, Département de Foresterie, Dschang, Cameroon
2 Université de Dschang, Faculté de Science, Département de Biologie végétale, Dschang, Cameroon
3 Filière des Métiers du Bois de l’Eau et de l’Environnement, Faculté d’Agronomie et de Sciences Agricoles, Ebolowa, Cameroon
4 Université de Dschang, Faculté d’Agronomie et de Sciences Agricoles, Département de Foresterie, Dschang, Cameroon
Original language: French
Copyright © 2018 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 eucalyptus plantations are experiencing considerable development in the world, but are also subject to controversy. The present study aimed to evaluate the floristic diversity and the allelopathic reflection of Eucalyptus saligna plantations in the Baleng forest reserve in Western Region of Cameroon. The experimental design consisted of five parcels, one control parcel and four parcels of Eucalyptus of different ages. In each of the five parcels, three plots of 9 m2 (3m x 3m) were randomly selected for the assessment of floristic diversity and soil sampling. In each plot, a circular section of 100 m deep hole was dug and soil samples were collected at three depths (20 cm, 50 cm and 100 cm). Soil analysis were made using the gravimetric method. It emerges from that study that the water content of soil decreases with the deep of soil and age of parcels. A total of 1593 individuals were recorded, grouped into 21 families and 55 species. The three most represented botanical families are Fabaceae (21%), Asteraceae (20%) and Poaceae (16%). But with regard to the number of individuals, the Poaceae family is the most represented with 36% of the individuals, followed by Asteraceae (21%) and Caryophyllaceae (11%). Herbaceous species are largely predominant (92% of individuals). There was no significant difference between the specific richness of the control plot and that of the eucalyptus plots at the 5% threshold (Turkey Test). Eucalyptus Saligna did not adversely affect the floristic composition of the understory vegetation.
Author Keywords: allelopathy, biodiversity, soil humidity, understory.
Abstract: (french)
Les plantations d´eucalyptus connaissent un développement considérable dans le monde, mais font également l’objet de nombreuses controverses. L’objectif de cette étude était d’évaluer la teneur en eau du sol, la diversité floristique et le reflet allélopathique des plantations d’Eucalyptus saligna dans la réserve forestière de Baleng dans la région de l’Ouest Cameroun. Le dispositif expérimental était constitué de cinq parcelles dont une parcelle témoin et quatre parcelles d’eucalyptus de différents âges. Dans chacune des parcelles, le dénombrement des végétaux et le prélèvement a été réalisé dans trois placettes de 9 m2 (3m x 3m). Dans chaque placette, un trou de section circulaire de 100 m de profondeur a été creusé et les échantillons de sols prélevés à trois profondeurs (20 cm, 50 cm et 100 cm). Il ressort de cette étude que la teneur en eau du sol décroit avec la profondeur du sol et l’âge de la plantation. Par rapport à la parcelle témoin, il n y’a pas un asséchement significatif du sol par Eucalyptus saligna. Un total de 1593 individus a été recensé, regroupé en 21 familles et 55 espèces. Les familles les mieux représentées en nombre d’espèces sont les Fabaceae, les Asteraceae et les Poaceae. Les espèces herbacées sont largement prédominantes (94% des individus). Cette étude montre que Eucalyptus Saligna n’a pas significativement impacté de façon négative la teneur en eau du sol et la composition floristique du sous-bois.
Author Keywords: allélopathie, biodiversité, humidité du sol, Ouest Cameroun, sous-bois.
How to Cite this Article
Lucie Félicité TEMGOUA, Marie Caroline MOMO SOLEFACK, Rodine TCHIOFO, and Isaac Blaise DJOKO, “Soil water content and floristic diversity under Eucalyptus saligna Smith (Myrtaceae) plantation in Western Region of Cameroon,” International Journal of Innovation and Applied Studies, vol. 24, no. 1, pp. 368–378, August 2018.
