Carbon stocks and cocoa yields in agroforestry systems of Central America

Somarriba, Eduardo; Cerda, Rolando; Orozco, Luis; Cifuentes, Miguel; Dávila, Héctor; Espin, Tania; Muchavisoy, Karol Henry Mavisoy; Ávila, Guadalupe; Alvarado, Estefany; Poveda, Verónica; Astorga, Carlos; Say, Eduardo; Deheuvels, Olivier

doi:10.1016/j.agee.2013.04.013

Cited by 178 publications

(128 citation statements)

References 60 publications

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“…Ces études sont unanimes sur le fait que les systèmes agroforestiers à base de cacaoyers abritent de nombreuses espèces par rapport aux plantations monoculturales. D'autres études ont aussi permis de démontrer leur importance dans la séquestration du carbone atmosphérique (Stephan-Dewenter et al, 2007;Smiley et Kroschel, 2008 ;Duguma et al, 2001 ;KottoSame et al, 1997 ;Gockowski et Sonwa, 2011 ;Somarriba et al, 2013).…”

Section: Introductionunclassified

Relations entre la diversité et la biomasse aérienne des espèces arborescentes dans les agroforêts traditionnelles à base de cacaoyers: Cas de la localité de Lakota (Côte d’Ivoire)

Vroh¹,

Abdoulaye²,

Constant³

et al. 2015

Afr. Crop Sci. J.

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RÉSUMÉEn matière de gestion durable des systèmes agroforestiers à base de cacao, il serait important de trouver un compromis pour à la fois conserver la biodiversité et les stocks de carbone ; ce qui constituerait une alternative écologiquement soutenable à l'agriculture conventionnelle. En Afrique sub-saharienne, peu d'études ont mis la lumière sur les relations éventuelles entre la biomasse végétale et la diversité biologique dans ces systèmes. La présente étude a permis de tester ces relations dans des agroforêts à cacao de Lakota en Côte d'Ivoire. Des cacaoyères et des forêts ont été inventoriées selon la méthode des transects à aire variable. Plusieurs indices floristiques, ont été calculés et la biomasse aérienne a été estimée, pour les espèces arborescentes de dbh > 2,5 cm. Au total, 215 espèces ont été dénombrées dans l'ensemble des biotopes dont 57,2 % en forêts anciennes, 50,2 % en forêts secondaires et 26 à 45 % dans les plantations. La biomasse aérienne des arbres sur pied dans les forêts anciennes est plus élevée (203,7 t ha -1 ) que dans les plantations où la biomasse baisse jusqu'à 90,2 t ha -1 . Il n'existe pas de relations significatives entre la biomasse aérienne et la diversité des espèces dans les forêts. Dans les plantations âgées de plus de 15 ans, une forte diversité spécifique peut être bénéfique à 20 % dans l'augmentation de la biomasse sur pied. Les pratiques paysannes traditionnelle sen cacao culture peuvent donc garantircon comitamment, la diversité floristique et la biomasse qui est le facteur déterminant dans la séquestration du carbone.Mots Clés: Réchauffements climatiques, système agroforestier, Côte d'Ivoire, activité anthropique ABSTRACTFor sustainable management of cocoa based agroforestry systems, it is important to find a tradeoff to conserve both biodiversity and carbon stock; which would be an ecologically sustainable alternative to conventional agriculture. In Sub-Saharan Africa, few studies have tested relationships between plant biomass and biodiversity in these systems. This study analysed these relationships in Cocoa based agroforest in Lakota area in Côte d'Ivoire. Cocoa farms and forest patches were inventoried using the variable-area transect method. We considered all trees species with dbh> 2.5 cm. Pearson correlation was used to test probable links between aboveground biomass and diversity indexes. We recorded a total of 215 tree species in all habitats, of which 57.2% were in old growth forests, 50.2% in secondary forests and 26-45% in cocoa farms. diversity could contribute up to 20% in the aboveground biomass. The conservation of floristic diversity in cacao based agroforestry systems may represent an important factor in mitigating global warming, through the storage of large amounts of carbon.

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Section: Introductionunclassified

Relations entre la diversité et la biomasse aérienne des espèces arborescentes dans les agroforêts traditionnelles à base de cacaoyers: Cas de la localité de Lakota (Côte d’Ivoire)

Vroh¹,

Abdoulaye²,

Constant³

et al. 2015

Afr. Crop Sci. J.

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“…Deforestation, biomass burning, conversion of natural to agricultural ecosystems, drainage of wetlands and soil cultivation are the principal causes of greenhouse gas emissions (Lal 2004). Several works have showed the role of agroforestry systems as an opportunity to reduce CO 2 concentrations in the atmosphere by increasing carbon (C) stocks in agricultural lands (Zapfack et al 2002;Albrecht & Kandji 2003;Oelbermann et al 2005;Saint-André et al 2005;Lufafa et al 2008;Takimoto et al 2008;Singh & Lodhiyal 2009;Torres et al 2010;Kumar et al 2011;Hergoualc'h et al 2012;Kuyah et al 2012;Thangata & Hildebrand 2012;Somarriba et al 2013;Kemeuze et al 2015;Manfo et al 2015;Jiagho et al 2016;Noiha et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Vegetation structure, carbon sequestration potential and species conservation in four agroforestry systems in Cameroon (Tropical Africa)

et al. 2018

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As the rate of forest degradation continues to rise, agroforestry may serve as a way of conserving species and carbon sinks. Th e aim of this study was to assess agrobiodiversity and carbon sequestration potential in agrosystems in Cameroon. Th ree age groups of agrosystems were studied. Data were collected in 100x50 m 2 quadrates. Density ranged from 53.17±0.08 to 1463±50.11; basal area from 2.07±0.00 to 988.39±16.13 m 2 /ha; Shannon diversity from 3.3±0.71 to 3.68±0.72; Carbon storage from 12.1±0.27 to 54.65±1.38 t C/ha for 1-10-year-old agrosystems with lowest values in neem; 34.78±0.87 to 71.34±1.6 t C/ha for 10-20-year-old stands with lowest values in cashew; 28.24±0.04 to 108.51±2.46 t C/ha for +20-year-old stands with highest values in eucalyptus; Carbon sequestration potential from 296.7±1.98 to 859.33±10.01 t CO 2eq /ha. Th e highest carbon stocks were found in eucalyptus stands (p<0.05). Several endogenous species, especially Afzelia bipindensis (EN), Leptoderris ledermannii (EN), Mansonia altissima (EN), Entandrophragma cylindricum (VU), Nesogordonia papaverifera (VU), Quassia sanguinea (VU), Vitellaria paradoxa (VU), Afzelia africana (VU), Erythrina senegalensis (LC), Detarium microcarpum (LC), senna spectabilis (LC), were assessed. Other overexploited species, especially Carissa edulis, Zanthoxylum zanthoxyloides, Adansonia digitata, Securidaca longepedonculata, were assessed as well. Th e studied systems are signifi cant CO 2eq sinks and refuge centre for agrobiodiversity.

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“…These systems are an alternative to conventional agriculture [10], economic, sociocultural capital, a source of more and diversified benefits and incomes [11][12][13][14][15]. Moreover, more studies have shown that, CAF are recognized for their ability to store important quantities of carbon, thus providing remarkable potential to fight against climate change [16][17][18][19]. However, the fluctuation in the price of cocoa in the world markets and the increase in the purchase prices of this raw material amongst rural households encourages them to extend their cocoa farms at the detriment of natural ecosystems [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Biodiversity and Carbon Stock in the SODECAO Agroforestry System of Center Region of Cameroon: Case of Talba Locality

Nadege¹

2017

AJAF

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Abstract:This study was carried out in typical SODECAO (Cocoa Development Company) agroforestry systems of Talba locality (Central region of Cameroon). The objective was to assess the role of typical SODECAO agroforestry systems in the conservation of biodiversity and the climate change mitigation. Trees inventories of diameter ≥10 cm and all cocoa trees were carried out in 40 plots of 25 m x 25 m. Cocoa Agroforests (CAF) sampled were stratified in three age classes (≥10, 10-20 and 20 years represented by young, middle and old cocoa agroforests respectively). Their aboveground biomass was estimated using allometric equations. A total of 21 trees species belonging to 19 genera and 14 families were inventoried. Of the total number of species of trees recorded, 24% were threatened looking at their IUCN (International Union for Conservation of Nature) status. Indeed, 9 species (43%) were indigenous and 12 (57%) exotic. The biodiversity indices values found were: Shannon (2.7), Pielou (0.7) and Simpson (0.9). The estimation of the specific wealth varied from 73-81% in CAF. The abundance of cocoa shrubs and associated tree species were estimated to 1104 stems ha -1 and 77 stems ha -1 respectively. The total carbon stock was 100 Mg Cha -1 . Cocoa shrubs and associated tree species carbon stock were 30 and 70 Mg Cha -1 respectively. According to the three age classes considered, there were a significantly differences between their carbon stocks (ANOVA, p <0.05). SODECAO cocoa agroforestry systems could be recognized amongst one of the major issues of international negotiations for the fight against climate change.

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Carbon stocks and cocoa yields in agroforestry systems of Central America

Cited by 178 publications

References 60 publications

Relations entre la diversité et la biomasse aérienne des espèces arborescentes dans les agroforêts traditionnelles à base de cacaoyers: Cas de la localité de Lakota (Côte d’Ivoire)

Relations entre la diversité et la biomasse aérienne des espèces arborescentes dans les agroforêts traditionnelles à base de cacaoyers: Cas de la localité de Lakota (Côte d’Ivoire)

Vegetation structure, carbon sequestration potential and species conservation in four agroforestry systems in Cameroon (Tropical Africa)

Biodiversity and Carbon Stock in the SODECAO Agroforestry System of Center Region of Cameroon: Case of Talba Locality

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