Soil Carbon Sequestration in Cacao Agroforestry Systems: A Case Study from Bahia, Brazil

  • E. F. Gama-Rodrigues
  • A. C. Gama-Rodrigues
  • P. K. Ramachandran Nair
Chapter
Part of the Advances in Agroforestry book series (ADAG, volume 8)

Abstract

Agroforestry systems (AFS) based on cacao (Theobroma cacao L.) may play an important role in capturing carbon (C) aboveground and storing it belowground (soil) through continuous deposition of plant residues. Cacao AFS in Bahia, Brazil, are comprised of cacao planted either with woody species such as Erythrina spp. and Gliricidia spp. or under tree canopies in natural forest, the latter being known as “cabruca”. The large amounts of leaf litter, roots, and woody material from shade species as well as cacao represent a substantial addition of C into these systems, most of which, following decomposition, is stored in the soil. The total C storage in the weathered Oxisols under cacao AFS in Bahia is estimated as 302 Mg ha−1 to 1 m depth. Occlusion of C in soil aggregates could be a major mechanism of C protection in these soils. Therefore it is important to know the amount of soil C storage across different soil aggregate classes at different soil depths and identify the extent of the sequestered C that is occluded in the soil aggregates. Furthermore, the deep-rooted nature of cacao and shade trees makes it imperative to look below the surface soil, where most conventional soil studies are focused. Carbon sequestration potential of cacao and other shaded-perennial-crop-based AFS could be a source of income for the farmers of these crops, the majority of whom are smallholders. Understanding the mechanisms of soil C sequestration could lead to proper realization of this potential through better management options.

Keywords

Cacao cabruca Ecosystem services Erythrina spp. Natural forest Shaded perennial systems Soil aggregates 

References

  1. Alvim PT, Nair PKR (1986) Combination of cocoa with other plantation crops: an agroforestry system in Southeast Bahia, Brazil. Agroforest Syst 4:3–15CrossRefGoogle Scholar
  2. Antle JM, Stoorvogel JJ, Valdivia RO (2007) Assessing the economic impacts of agricultural carbon sequestration: Terraces and agroforestry in the Peruvian Andes. Agric Ecosyst Environ 122:435–445CrossRefGoogle Scholar
  3. Barreto PAB, Gama-Rodrigues EF, Gama-Rodrigues AC, Fontes AG, Polidoro JC, Moço MKS, Machado RCR, Baligar VC (2010) Distribution of oxidizable organic C fractions in soils under cacao agroforestry systems in Southern Bahia. Brazil Agroforest Syst. doi:10.1007/s10457-010-9300-4Google Scholar
  4. Bronick CJ, Lal R (2005) Soil structure and management: a review. Geoderma 124:3–22CrossRefGoogle Scholar
  5. Cadish G, Mutuo P, Mercado A, Hairiah K, Nyamugafata P, Boye A, Albrecht A (2006) Organic matter management in tropical agroforestry systems: soil quality, soil C storage and soil atmosphere gas exchange. In: Gama-Rodrigues AC, Barros NF, Gama-Rodrigues EF, Freitas MSM, Viana AP, Jasmin JM, Marciano CR, Carneiro JGA (eds.) Sistemas agroflorestais: bases científicas para o desenvolvimento sustentável. UENF, Campos dos Goytacazes, pp 275–290Google Scholar
  6. Christensen BT (1992) Physical fractionation of soil and organic matter in primary particle size and density separates. Adv Soil Sci 20:1–90Google Scholar
  7. Cotta MK, Jacovine AG, Paiva HN, Soares CPB, Filho ACV, Valverde SR (2008) Biomass quantification and emission reduction certificates for rubber-cocoa intercropping. Rev Árvore 32:969–978CrossRefGoogle Scholar
  8. Duguma B, Gockowski J, Bakala J (2001) Smallholder cacao (Theobroma cacao Linn.) cultivation in agroforestry systems of West and Central Africa: challenges and opportunities. Agroforest Syst 51:177–188CrossRefGoogle Scholar
  9. Elliott ET (1986) Aggregate structure and carbon, nitrogen and phosphorus in native and cultivated soils. Soil Sci Soc Am J 50:627–633CrossRefGoogle Scholar
  10. Elliott ET, Coleman DC (1988) Let the soil work for us. Ecol Bull 39:23–32Google Scholar
  11. Fassbender HW, Beer J, Heuveldop J, Imbach A, Enriquez G, Bonnemann A (1991) Ten year balances of organic matter and nutrients in agroforestry systems at CATIE, Costa Rica. For Ecol Manag 4:173–183CrossRefGoogle Scholar
  12. Fontes AG (2006) Nutrient cycling in cacao agroforestry systems in south of Bahia, Brazil. Ph.D. dissertation, North Fluminense State University, RJ, Brazil, 71 pGoogle Scholar
  13. Gama-Rodrigues AC, Cadima-Zevallos A (1991) Efectos de fertilización sobre sistema radicular de cacao en suelos de “tabuleiros” del sur de Bahia, Brasil. Turrialba 41:135–141Google Scholar
  14. Gama-Rodrigues EF, Moço MKS, Gama-Rodrigues AC, Machado RC (2006) Atributos biológicos em solos sob sistemas agroflorestais de cacau: um estudo de caso. In: Gama-Rodrigues AC, Barros NF, Gama-Rodrigues EF, Freitas MSM, Viana AP, Jasmin JM, Marciano CR, Carneiro JGA (eds.) Sistemas agroflorestais: bases científicas para o desenvolvimento sustentável. UENF, Campos dos Goytacazes, pp 243–256Google Scholar
  15. Gama-Rodrigues EF, Nair PKR, Nair VD, Gama-Rodrigues AC, Baligar V, Machado RCR (2010) Carbon storage in soil size fractions under two cacao agroforestry systems in Bahia, Brazil. Environ Manag 45:274–283CrossRefGoogle Scholar
  16. Gockowski J, Sonwa D (2010) Cocoa intensification scenarios and their predicted impact on CO2 emission, biodiversity conservation, and rural livelihoods in the Guinea rain forest of west Africa. Environ Manag. doi:10.1007/s00267-010-9602-3Google Scholar
  17. Goebel M-O, Bachmann J, Woche SK, Fischer WR (2005) Soil wettability, aggregate stability, and the decomposition of soil organic matter. Geoderma 128:80–93CrossRefGoogle Scholar
  18. Gregorich EG, Beare MH, McKim UF, Skjemstad JO (2006) Chemical and biological characteristics of physically uncomplexed organic matter. Soil Sci Soc Am J 70:975–985CrossRefGoogle Scholar
  19. Gupta VVSR, Germida JJ (1988) Distribution of microbial biomass and its activity in different soil aggregate size classes as affected by cultivation. Soil Biol Biochem 20:777–786CrossRefGoogle Scholar
  20. Hanson PJ, Edwards NT, Garten CT, Andrews JA (2000) Separating root and microbial contributions to soil respiration: a review of methods and observations. Biogeochemistry 48:115–146CrossRefGoogle Scholar
  21. Hassink J (1992) Effects of soil texture and structure on carbon and nitrogen mineralization in grassland soils. Biol Fertil Soils 14:126–134CrossRefGoogle Scholar
  22. Hassink J, Whitmore AP (1997) A model of the physical protection of organic matter in soils. Soil Sci Soc Am J 61:131–139CrossRefGoogle Scholar
  23. Haynes RJ, Beare MH (1997) Influence of six crop species on aggregate stability and some labile organic matter fractions. Soil Biol Biochem 29:1647–1653CrossRefGoogle Scholar
  24. Hertel D, Harteveld A, Leuschner C (2009) Conversion of a tropical forest into agroforest alters the fine root-related carbon flux to the soil. Soil Biol Biochem 41:481–490CrossRefGoogle Scholar
  25. Högberg P, Nordgren A, Buchmann N, Taylor AFS, Ekblad A, Högberg MN, Nyberg G, Ottosson-Löfvenius M, Read DJ (2001) Large-scale forest girdling shows that current photosynthesis drives soil respiration. Nature 411:789–792PubMedCrossRefGoogle Scholar
  26. IPCC (2000) Land use, land use change, and forestry. A special report of the IPCC. Cambridge University Press, Cambridge, UK, 375 pGoogle Scholar
  27. Isaac ME, Gordon AM, Thevathasan N, Oppong SK, Quashie-Sam J (2005) Temporal changes in soil carbon and nitrogen in West African multistrata agroforestry systems: a chronosequence of pools and fluxes. Agroforest Syst 65:23–31CrossRefGoogle Scholar
  28. Jastrow JD (1996) Soil aggregate formation and the accrual of particulate and mineral-associated organic matter. Soil Biol Biochem 28:656–676CrossRefGoogle Scholar
  29. Jastrow JD, Boutton TW, Miller RM (1996) Carbon dynamics of aggregate-associated organic matter estimated by carbon-13 natural abundance. Soil Sci Soc Am J 60:801–807CrossRefGoogle Scholar
  30. John B, Yamashita T, Ludwig B, Flessa H (2005) Storage of organic carbon in aggregate and density fractions of silty soils under different types of land use. Geoderma 128:63–79CrossRefGoogle Scholar
  31. Kummerow J, Kummerow M, Alvim PT (1981) Root biomass in mature cacao (Theobroma cacao L.) plantation. Rev Theobroma 11:77–85Google Scholar
  32. Kummerow J, Kummerow M, Silva WS (1982) Fine-root growth dynamics in cacao (Theobroma cacao). Plant Soil 65:193–201CrossRefGoogle Scholar
  33. Lal R (2004) Soil sequestration in dryland ecosystems. Environ Manag 33:528–544CrossRefGoogle Scholar
  34. Liao JD, Boutton TW, Jastrow JD (2006) Storage and dynamics of carbon and nitrogen in soil physical fractions following woody plant invasion of grassland. Soil Biol Biochem 38:3184–3196CrossRefGoogle Scholar
  35. Marschener B, Brodowski S, Dreves A, Gleixner G, Gude A, Grootes PM, Hamer U, Heim A, Jandl G, Ji R, Kaiser K, Kalbitz K, Kramer C, Leinweber P, Rethemeyer J, Schäffer A, Scmidt MWI, Schwark L, Wiesenberg GLB (2008) How relevant is recalcitrance for the stabilization of organic matter in soils? J Plant Nutr Soil Sci 171:91–110CrossRefGoogle Scholar
  36. Montagnini F, Nair PKR (2004) Carbon sequestration: an under-exploited environmental benefit of agroforestry systems. Agroforest Syst 61:281–295CrossRefGoogle Scholar
  37. Müller MW, Gama-Rodrigues AC (2007) Sistemas agroflorestais com cacaueiro. In: Valle RR (ed.) Ciência, tecnologia e manejo do cacaueiro. CEPLAC, Ilhéus, pp 246–271Google Scholar
  38. Muñoz F, Beer J (2001) Fine root dynamics of shaded cacao plantations in Costa Rica. Agroforest Syst 51:119–130CrossRefGoogle Scholar
  39. Nair PKR, Kumar BM, Nair VD (2009) Agroforestry as a strategy for carbon sequestration. J Plant Nutr Soil Sci 172:10–23CrossRefGoogle Scholar
  40. Nair PKR, Nair VD, Kumar BM, Showalter JM (2010) Carbon sequestration in agroforestry systems. Adv Agron 108:237–307CrossRefGoogle Scholar
  41. Oades JM (1984) Soil organic matter and structural stability: mechanisms and implications for management. Plant Soil 76:319–337CrossRefGoogle Scholar
  42. Oades JM (1993) The role of biology in the formation, stabilization and degradation of soil structure. Geoderma 56:377–400CrossRefGoogle Scholar
  43. Oades JM, Waters AG (1991) Aggregate hierarchy in soils. Aust J Soil Res 29:815–828CrossRefGoogle Scholar
  44. Oelbermann M, Voroney RP (2007) Carbon and nitrogen in a temperate agroforestry system: using stable isotopes as a tool to understand soil dynamics. Ecol Eng 29:342–349CrossRefGoogle Scholar
  45. Oelbermann M, Voroney RP, Naresh V, Thevathasan NV, Gordon AM, Kass DCL, Schlönvoigt AM (2006) Carbon dynamics and residue stabilization in a Costa Rican and southern Canadian alley cropping system. Agroforest Syst 68:27–36CrossRefGoogle Scholar
  46. Puget P, Chenu C, Balesdent J (1995) Total and young organic-matter distributions in aggregates of silty cultivated soils. Eur J Soil Sci 46:449–459CrossRefGoogle Scholar
  47. Shapiro H-Y, Rosenquist EM (2004) Public/private partnerships in agroforestry: the example of working together to improve cocoa sustainability. Agroforest Syst 61:453–462CrossRefGoogle Scholar
  48. Six J, Elliot ET, Paustian K, Doran JW (1998) Aggregation and soil organic matter accumulation in cultivated and native grassland soils. Soil Sci Soc Am J 63:1350–1358CrossRefGoogle Scholar
  49. Six J, Elliot ET, Paustian K (1999) Aggregate and soil organic matter dynamics under conventional and no tillage systems. Soil Sci Soc Am J 63:1350–1358CrossRefGoogle Scholar
  50. Six J, Elliot ET, Paustian K (2000) Soil macroaggregate turnover and microaggregate formation: a mechanism for C sequestration under no-tillage agriculture. Soil Biol Biochem 32:2099–2103CrossRefGoogle Scholar
  51. Six J, Conant RT, Paul EA, Paustian K (2002) Stabilization mechanisms of soil organic matter: implications for C-saturation of soils. Plant Soil 241:155–176CrossRefGoogle Scholar
  52. Six J, Bossuyt H, Degryze S, Denef K (2004) A history of research on the link between (micro)aggregates, soil biota, and soil organic matter dynamics. Soil Tillage Res 79:7–31CrossRefGoogle Scholar
  53. Smiley GL, Kroschel J (2008) Temporal change in carbon stocks of cocoa–gliricidia agroforests in Central Sulawesi, Indonesia. Agroforest Syst 73:219–231CrossRefGoogle Scholar
  54. Sollins P, Homann P, Caldwell BA (1996) Stabilization and destabilization of soil organic matter: mechanisms and controls. Geoderma 74:65–105CrossRefGoogle Scholar
  55. Takimoto A, Nair PKR, Nair VD (2008) Carbon stock and sequestration potential of traditional and improved agroforestry systems in the West African Sahel. Agric Ecosyst Environ 125:159–166CrossRefGoogle Scholar
  56. Tisdall JM, Oades JM (1982) Organic matter and water-stable aggregates in soils. J Soil Sci 33:141–163CrossRefGoogle Scholar
  57. Yamashita T, Flessa H, John B, Helfrich M, Ludwig B (2006) Organic matter in density fractions of water-stable aggregates in silty soils: effect of land use. Soil Biol Biochem 38:3222–3234CrossRefGoogle Scholar
  58. Zotarelli L, Alves BJR, Urquiaga S, Boddey RM, Six J (2007) Impact of tillage and crop rotation on light fraction and intra-aggregate soil organic matter in two Oxisols. Soil Sci Soc Am J 69:482–491CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  • E. F. Gama-Rodrigues
    • 1
  • A. C. Gama-Rodrigues
    • 1
  • P. K. Ramachandran Nair
    • 2
  1. 1.Soil LaboratoryNorte Fluminense State UniversityCampos dos GoytacazesBrazil
  2. 2.Center for Subtropical Agroforestry, School of Forest Resources and ConservationUniversity of FloridaGainesvilleUSA

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