Volume 31, Issue 2, December 2020, Pages 336–350
Sana Dallali1, Hanen Bouraoui2, Rabiaa Mouhbi3, Ikbel Zaouaoui4, Foued Hasnaoui5, and Lamjed Toumi6
1 Silvo-Pastoral Institute of Tabarka, University of Jendouba, Tabarka, Tunisia
2 Silvo-Pastoral Institute of Tabarka, University of Jendouba, Tabarka, Tunisia
3 Silvo-Pastoral Institute of Tabarka, University of Jendouba, Tabarka, Tunisia
4 Silvo-Pastoral Institute of Tabarka, University of Jendouba, Tabarka, Tunisia
5 Silvo-Pastoral Institute of Tabarka, University of Jendouba, Tabarka, Tunisia
6 Silvo-Pastoral Institute of Tabarka, University of Jendouba, Tabarka, Tunisia
Original language: English
Copyright © 2020 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 above-ground shrub biomasses were studied in a degradation sequence of Djebel Zaghouan. The plots of 25 and 400 m2 each were geolocated with a breakdown into three stages of degradation: degraded, moderately degraded and preserved. Mathematical models were developed for each species to determine the relationships of aboveground biomass as a function of biovolume and crown surface. Regression equations are of different types: logarithmic, power, polynomial, linear and exponential with high coefficient of determination (R2). The highest total phytomass was recorded at station 14 with an average production of 17.48t / ha and a significant degree of recovery of 61.13%. However, the lowest aerial phytomass was recorded in station 22 (0.561t / ha) with a recovery rate of 6%.
Author Keywords: Biomass, Degradation, Allometric relations, Djebel Zaghouan.
Sana Dallali1, Hanen Bouraoui2, Rabiaa Mouhbi3, Ikbel Zaouaoui4, Foued Hasnaoui5, and Lamjed Toumi6
1 Silvo-Pastoral Institute of Tabarka, University of Jendouba, Tabarka, Tunisia
2 Silvo-Pastoral Institute of Tabarka, University of Jendouba, Tabarka, Tunisia
3 Silvo-Pastoral Institute of Tabarka, University of Jendouba, Tabarka, Tunisia
4 Silvo-Pastoral Institute of Tabarka, University of Jendouba, Tabarka, Tunisia
5 Silvo-Pastoral Institute of Tabarka, University of Jendouba, Tabarka, Tunisia
6 Silvo-Pastoral Institute of Tabarka, University of Jendouba, Tabarka, Tunisia
Original language: English
Copyright © 2020 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 above-ground shrub biomasses were studied in a degradation sequence of Djebel Zaghouan. The plots of 25 and 400 m2 each were geolocated with a breakdown into three stages of degradation: degraded, moderately degraded and preserved. Mathematical models were developed for each species to determine the relationships of aboveground biomass as a function of biovolume and crown surface. Regression equations are of different types: logarithmic, power, polynomial, linear and exponential with high coefficient of determination (R2). The highest total phytomass was recorded at station 14 with an average production of 17.48t / ha and a significant degree of recovery of 61.13%. However, the lowest aerial phytomass was recorded in station 22 (0.561t / ha) with a recovery rate of 6%.
Author Keywords: Biomass, Degradation, Allometric relations, Djebel Zaghouan.
How to Cite this Article
Sana Dallali, Hanen Bouraoui, Rabiaa Mouhbi, Ikbel Zaouaoui, Foued Hasnaoui, and Lamjed Toumi, “Impact of degradation on the above-ground biomass of plants composing the shrub layer of Djebel Zaghouan,” International Journal of Innovation and Applied Studies, vol. 31, no. 2, pp. 336–350, December 2020.
