�valuation de la biomasse arbor�e et arbustive dans une s�quence de d�gradation de la suberaie �
Cytise de Kroumirie (Tunisie)

Sebeï, Houcine; Albouchi, Ali; Rapp, M.; Aouni, Mohamed Hédi El

doi:10.1051/forest:2001117

Cited by 7 publications

(23 citation statements)

References 10 publications

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“…The aboveground biomass at stand level estimated in Bellif forest (169.68 Mg ha −1 in the young stands and 312.49 Mg ha −1 in the aged stands) was higher than in other studies of cork oak forests reported by Sebei et al (2001Sebei et al ( , 2004 in Tunisia (48.9-113 Mg ha −1 ) and Léonardi et al (1992) in Italy (42.2 Mg ha −1 ). In this study, estimations of aboveground biomass in the forest of Bellif are comparable with biomass estimations for the same kind of forest in Spain, with values ranging between 159 Mg ha −1 -328 Mg ha −1 (Robert et al, 1996) for only wood and cork biomass of cork oak trees (38 -158 years) (Cañellas et al, 2008) (Table 6).…”

Section: Stand Biomass and Root/shoot Ratiocontrasting

confidence: 42%

“…However, for belowground biomass, parameter α 1 was slightly lower for Bellif forest oak trees (1.76 ± 0.19) than that of oak trees from the Ain Draham region (1.96) (Sebei et al, 2001). This finding suggests that the degree of biomass accumulation increases with site fertility for stem wood and stem cork biomass of cork oak trees, but slightly decreases for belowground biomass.…”

Section: Above and Belowground Biomass At Stand Levelmentioning

confidence: 52%

“…The value of parameter α 1 in the y = fct(DBH) simple equation for stem wood (2.41 ± 0.27; value ± SE) and stem cork biomass (3.5021 ± 0.32) of the sampled oak trees from Bellif forest in this study were higher than those for stem wood (1.96) and stem cork biomass (1.60) of oak trees from different sites in the Ain Draham region which have lower fertility (Sebei et al, 2001). However, for belowground biomass, parameter α 1 was slightly lower for Bellif forest oak trees (1.76 ± 0.19) than that of oak trees from the Ain Draham region (1.96) (Sebei et al, 2001).…”

Section: Above and Belowground Biomass At Stand Levelmentioning

confidence: 53%

“…In European Mediterranean ecosystems, root-shoot ratio of the Quercus species (R/S) ranged from 0.27 to 4.8 (Pausas, 1999;Cañellas & San Miguel, 2000;Ruiz-Peinado et al, 2012). In Tunisia, Sebei et al (2001Sebei et al ( , 2004 reported a cork oak root-shoot (R/S) ratio of 0.22, unfortunately without estimating the stump part. Researchers have traditionally paid only scant attention to root systems, due to the laborious and time consuming research methods involved (Levy et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

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Estimate of biomass and carbon pools in disturbed and undisturbed oak forests in Tunisia

et al. 2016

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Aim of the study. To estimate biomass and carbon accumulation in a young and disturbed forest (regenerated after a tornado) and an aged cork oak forest (undisturbed forest) as well as its distribution among the different pools (tree, litter and soil).Area of study. The north west of Tunisia Material and methods. Carbon stocks were evaluated in the above and belowground cork oak trees, the litter and the 150 cm of the soil. Tree biomass was estimated in both young and aged forests using allometric biomass equations developed for wood stem, cork stem, wood branch, cork branch, leaves, roots and total tree biomass based on combinations of diameter at breast height, total height and crown length as independent variables.Main results. Total tree biomass in forests was 240.58 Mg ha -1 in the young forest and 411.30 Mg ha -1 in the aged forest with a low root/shoot ratio (0.41 for young forest and 0.31 for aged forest). Total stored carbon was 419.46 Mg C ha -1 in the young forest and 658.09 Mg C ha -1 in the aged forest. Carbon stock (Mg C ha Research highlights. Aged undisturbed forest had the largest tree biomass but a lower potential for accumulation of carbon in the future; in contrast, young disturbed forest had both higher growth and carbon storage potential.

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Section: Stand Biomass and Root/shoot Ratiocontrasting

confidence: 42%

Section: Above and Belowground Biomass At Stand Levelmentioning

confidence: 52%

Section: Above and Belowground Biomass At Stand Levelmentioning

confidence: 53%

Section: Introductionmentioning

confidence: 99%

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Estimate of biomass and carbon pools in disturbed and undisturbed oak forests in Tunisia

et al. 2016

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“…Delzon et al (2003) emphasized the role of the understorey compartment in a Maritime pine stand indicating that its removal would reduce the ecosystem carbon fluxes by 15%. However, understorey contribution to forest carbon stocks and fluxes are often investigated using rough approaches based on biomass to soil surface relationships (Clary and Tiedemann, 1986;Law et al, 2001;Martin et al, 2005;Sebei et al, 2001), for example. In term of carbon stock in French forests, understorey (living biomass+dead-wood) averaged 4% of total stock, which corresponded for Southern France Maritime pine (Pinus pinaster) plantations to an average of 5 t DM ha −1 (Dupouey et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

Using cover measurements to estimate aboveground understorey biomass in Maritime pine stands

Porté¹,

Samalens

Dulhoste

et al. 2009

Ann. For. Sci.

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Abstract• Understorey plays a major role in forest fluxes and stocks balances, however this compartment is generally poorly quantified. Our objectives were to establish models to estimate understorey biomass using vegetation cover measurements and to investigate upscaling methodologies from stand to regional level.• Understorey aboveground biomass measurements were undertaken in Maritime pine stands of mesohygric, mesic and dry moorlands in South West France.• Average biomass stock in this compartment was estimated to 3.50 t DM ha −1 . The more abundant species groups varied with moorland types, with a higher relative contribution of herbaceous species (23.3%), bracken (59.2%) and mosses (31.6%) for mesohygric, mesic and dry moorlands, respectively. For each species group, we established significant relationships to estimate biomass using a volumetric index, based on cover and height measurements. No relationship between stand characteristics and understorey biomass was founded. We investigated the upscaling of these estimations to a several thousands hectare area using understorey cover measurements done along a regular spatial grid. The only significant correlation linked one satellite vegetation index to understorey biomass.• We successfully developed empirical relationships to estimate the understorey biomass at the stand level. Further investigations could focus on the analysis of understorey variability over a finer space grid and the potential use of satellite vegetation indexes. Mots-clés :biomasse / sous-bois / modèle allométrique / Pinus pinaster / changement d'échelle Résumé -Estimation de la biomasse aérienne du sous-bois de peuplements de pin maritime à l'aide de mesures de recouvrement.• Le sous-bois est un compartiment non négligeable dans les études de stocks et de flux des forêts ; cependant il est encore mal quantifié. Les objectifs de notre étude étaient d'établir des relations permettant d'estimer la biomasse du sous-bois de peuplements et d'analyser les possibilités d'extrapolation à l'échelle du massif.• Des mesures de biomasse aérienne de sous-bois ont été réalisées sur une série de peuplements de pin maritime en Landes mésohygrophile, mésophile et sèche dans le Sud-Ouest de la France.• Nous avons estimé le stock moyen de biomasse dans ce compartiment à 3.50 t MS ha −1 . Le groupe d'espèces le plus abondant diffère selon le type de landes : herbacées (23.3 %), fougères (59.2 %) et mousses (31.6 %) en landes mésohygrophile, mésophile et sèche, respectivement. Pour chaque groupe d'espèces, des relations significatives ont été mises en évidence entre un indice volumique et la biomasse de sous-bois. Aucune relation n'a été mise en évidence entre les caractéristiques du peuplement et la biomasse du sous-bois. Nous avons envisagé le calcul à l'échelle d'une zone atelier de plusieurs milliers d'hectares en utilisant une grille spatialisée de relevés de recouvrements. Seul un indice satellite de végétation a présenté une corrélation positive avec la biomasse du sous-bois.• Les relations que nous a...

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Ecological Distribution, Phytochemistry and Biological Properties of Rosa Species in Tunisia

et al. 2021

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�valuation de la biomasse arbor�e et arbustive dans une s�quence de d�gradation de la suberaie � Cytise de Kroumirie (Tunisie)

Cited by 7 publications

References 10 publications

Estimate of biomass and carbon pools in disturbed and undisturbed oak forests in Tunisia

Estimate of biomass and carbon pools in disturbed and undisturbed oak forests in Tunisia

Using cover measurements to estimate aboveground understorey biomass in Maritime pine stands

Ecological Distribution, Phytochemistry and Biological Properties of Rosa Species in Tunisia

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