Quantification Des Stocks De Carbone De Trois Pools Clés De Carbone En Afrique Centrale : Cas De La Forêt Marécageuse De La Likouala (Nord Congo)

Bocko, Yannick E.; Ifo, Suspense Averti; Loumeto, Jean Joël

doi:10.19044/esj.2017.v13n5p438

Cited by 12 publications

(30 citation statements)

References 34 publications

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“…Given the difficulties in estimating their carbon stocks by destructive method, in this study, their biomass was estimated in a non-destructive method. Thus, below ground carbon stocks an average of 39.6 tC.ha -1 in the study area; which is similar to the 39.7 tC.ha -1 found by Bocko et al [48] in the Congo forests. However, several authors have reported that below ground carbon stocks in tropical ecosystems and agrosystems are similar [46,48,49].…”

Section: Discussionsupporting

confidence: 88%

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Diversity, Structure and Carbon Stocks from Three Pools in the Kouoghap Sacred Forest, Hedgerows and <i>Eucalyptus</i> Plantations in the Batoufam Locality (West Cameroon)

Tchatchouang¹,

Djomo²,

Tajeukem³

et al. 2018

AEES

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The aim of this study was to make an inventory of the trees and estimate hedgerows and eucalyptus plantations carbon stocks in comparison with that of the Kouoghap sacred forest which is the only landscape having retained its original character. This study was conducted in the sacred forest, hedgerows and Eucalyptus plantations, which are the predominant land use type of Batoufam locality. Inventory data of trees with diameter ≥10 cm were made in 5 transects of 800 m x 5 m for the sacred forest and 10 transects of 300m x 5m for hedgerows and Eucalyptus plantations. The above and below ground biomass of trees was estimated using allometric equations; that of litter collected in 30 square plots of 0.5m x 0.5m, was estimated by the destructive method. A total of 70 and 11 trees species were respectively recorded in the sacred forest and hedgerows. However, Eucalyptus plantations are monospecific (only one trees species was found). The Shannon index (3.51) showed a rich floristic diversity in the sacred forest and weak diversity in hedgerows (1.94). The abundance of trees decreases with the increase in diameter classes of the sacred forest and hedgerows therefore forming and irregular appearance in the Eucalyptus plantations. No significant difference was found between these three land use according to the carbon stocks which varied from 130 to 196 tC.ha -1 for aboveground and from 31 to 47 tC.ha -1 for belowground carbon. As compared to, that of litter which was significantly different between the sacred forest (6.40 tC.ha -1 ), hedgerows (9.39 tC.ha -1 ) and Eucalyptus plantations (10.96 tC.ha -1 ). This study confirmed the conservation of biodiversity through sacred forest and also the need to take into account other types of lands use in policies to fight against climate changes given the amount of carbon they store.

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Section: Discussionsupporting

confidence: 88%

“…On the other hand, in Eucalyptus plantations, the curve has an irregular shape. However, the trees.ha -1 remains higher in classes [10-20] and [40][41][42][43][44][45][46][47][48][49][50].…”

Section: Floristic Diversity In the Study Areamentioning

confidence: 99%

Diversity, Structure and Carbon Stocks from Three Pools in the Kouoghap Sacred Forest, Hedgerows and <i>Eucalyptus</i> Plantations in the Batoufam Locality (West Cameroon)

Tchatchouang¹,

Djomo²,

Tajeukem³

et al. 2018

AEES

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“…A further 0.6-2.5 Pg C is estimated to be stored in the vegetation of the Cuvette Centrale peatlands (Dargie et al, 2017). When compared to adjacent terra firme and seasonally flooded forests, Bocko et al (2017) found that the peatland swamp forests of the Cuvette Centrale had considerably lower aboveground carbon stocks (peatlands swamp forest: 147.7 ± 69.7 t/ha; terre firme forest: 295.3 ± 96.3 t/ha, seasonally flooded forest: 292.3 ± 62.8 t/ha). Differences in forest structure were also noted with the contribution of very large individuals (dbh > 70 cm) to the aboveground carbon stock being much more important in terra firme and seasonally flooded forests, whilst the peatland swamp forests had far fewer very large trees (Bocko et al, 2017).…”

Section: Peatland Carbon Stocks and Cyclingmentioning

confidence: 95%

“…In addition to improving estimates of above and belowground carbon stocks, it is also important to understand the carbon dynamics within tropical peatlands. Bocko et al (2017) quantified the deadwood carbon pool in the swamp forests of the Cuvette Centrale. However, at present there are currently no published studies on gross primary productivity and net primary productivity in the Cuvette Centrale peatlands.…”

Section: Peatland Carbon Stocks and Cyclingmentioning

confidence: 99%

“…However, at present there are currently no published studies on gross primary productivity and net primary productivity in the Cuvette Centrale peatlands. This is not a problem unique to this region; across the globe, few studies have tried to quantify the full carbon budget of a tropical peatland (Bocko et al, 2017;Dargie et al, 2017;Pangala et al, 2017).…”

Section: Peatland Carbon Stocks and Cyclingmentioning

confidence: 99%

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Current knowledge on the Cuvette Centrale peatland complex and future research directions

et al. 2022

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The Cuvette Centrale is the largest tropical peatland complex in the world, covering approximately 145,000 km2 across the Republic of Congo and the Democratic Republic of Congo. It stores ca. 30.6 Pg C, the equivalent of three years of global carbon dioxide emissions and is now the first trans-national Ramsar site. Despite its size and importance as a global carbon store, relatively little is known about key aspects of its ecology and history, including its formation, the scale of greenhouse gas flows, its biodiversity and its history of human activity. Here, we synthesise available knowledge on the Cuvette Centrale, identifying key areas for further research. Finally, we review the potential of mathematical models to assess future trajectories for the peatlands in terms of the potential impacts of resource extraction or climate change.

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Allometric equation for the commonest palm in the Central Congo Peatlands,Raphia laurentiiDe Wild

Bocko

Panzou

Dargie

et al. 2022

Preprint

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The worlds largest tropical peatland lies in the central Congo Basin. Raphia laurentii De Wild. is a palm which forms dominant to mono-dominant stands across ca. 45 % of the peatland area. However, a lack of allometric equation for this canopy-forming trunkless palm with fronds up to 20 m long, means that this it is currently excluded from aboveground biomass (AGB) estimates for these peatland ecosystems. Here we develop an allometric equation for R. laurentii, by destructively sampling 90 R. laurentii stipes (across six mean petiole diameter size classes of: 2-4 cm, 4-5 cm, 5-6 cm, 6-7 cm, >8 cm) in a peat swamp forest, in the Likouala Department, Republic of the Congo. Prior to destructive sampling, the five parameters were measured for each stipe: diameter at stem base, mean diameter of the palm fronds, total diameter of the palm fronds (TDpf), total height and number of palm fronds. After destructive sampling and before weighing each individual was separated into the stem and the following palm frond categories: sheath, petiole, rachis and leaflets. We fitted a linear model relating AGB to each independent predictor variable separately to assess the best variable, finding that palm fronds represented at least 77 % of the total AGB in each diameter classes. We found that TDpf was the best single predictor variable for R. laurentii AGB. The best allometric equation was: Model 11. A monodominant 1 ha plot near the harvesting site had a palm AGB of 60.8 Mg ha-1, similar to the AGB of the trees in the same plot, at 86.2 Mg ha-1. Accounting for the AGB of palms is important, and can now be estimated using the allometric equations developed here.

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Quantification Des Stocks De Carbone De Trois Pools Clés De Carbone En Afrique Centrale : Cas De La Forêt Marécageuse De La Likouala (Nord Congo)

Cited by 12 publications

References 34 publications

Diversity, Structure and Carbon Stocks from Three Pools in the Kouoghap Sacred Forest, Hedgerows and <i>Eucalyptus</i> Plantations in the Batoufam Locality (West Cameroon)

Diversity, Structure and Carbon Stocks from Three Pools in the Kouoghap Sacred Forest, Hedgerows and <i>Eucalyptus</i> Plantations in the Batoufam Locality (West Cameroon)

Current knowledge on the Cuvette Centrale peatland complex and future research directions

Allometric equation for the commonest palm in the Central Congo Peatlands,Raphia laurentiiDe Wild

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