Abstract
Given the recognized role of agroforestry systems (AFS) in climate change mitigation through carbon sequestration, it is important to have rigorous and consistent procedures to measure the extent of C sequestration. The methods used currently vary widely and the estimations entail several assumptions, some of which are erroneous. Large-scale global models that are based on such measurements and estimations are thus likely to result in serious under- or overestimations. These methodological problems, though common to most land-use systems, are of a higher order of magnitude in AFS compared with agricultural systems because of the integrated nature of AFS and the lack of rigorous data on the area under the practice. While there are no easy, fast, and pragmatic solution to these complex issues in the short term, agroforestry researchers could, at the very minimum, include accurate description of the methods and procedures they use, such as sampling scheme, analytical details, and computational methods, while reporting results. That will help other researchers to examine the datasets and incorporate them in larger databases and help agroforestry earn its deserving place in mainstream efforts. Missing the opportunity to capitalize on the environmental services of agroforestry for the lack of rigorous and consistent procedures for data collection and reporting will be a serious setback to the development of agroforestry.
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References
ALERTS (Automated Land-change Evaluation, Reporting, and Tracking System) (2011). http://www.planetaryskin.org. Accessed 20 June 2011
Basuki TM, van Laake PE, Skidmore AK, Hussin YA (2009) Allometric equations for estimating the above-ground biomass in tropical lowland Dipterocarp forests. For Ecol Manag 257:1684–1694
Brown S (1997) Estimating biomass and biomass change of tropical forests: a primer. In: FAO Forestry Paper 134. FAO, Rome, p 55
Chave J, Andalo A, Brown S, Cairns MA, Chambers JQ, Eamus D, Fölster H, Fromard F, Higuchi N, Kira T, Lescure J-P, Nelson BW, Ogawa H, Puig H, Riéra B, Yamakura T (2005) Tree allometry and improved estimation of carbon stocks and balance in tropical forests. Oceologia 145:87–99
Dixon RK, Winjum JK, Schroeder PE (1993) Conservation and sequestration of carbon: the potential of forest and agroforest management practices. Gl Environ Chn 2:159–173
Dixon RK, Wimjum JK, Lee JJ, Schroeder PE (1994) Integrated systems: assessing of promising agroforest and alternative land-useland-use practices to enhance carbon conservation and sequestration. Clim Chn 30:1–23
Dube F, Thevathasan NV, Zagal E, Gordon AM, Stolpe NB, Espinosa M (2011) Carbon sequestration potential of silvopastoral and other land use systems in the Chilean Patagonia. In: Kumar BM, Nair PKR (eds) Carbon sequestration in agroforestry systems: opportunities and challenges. Springer, Dordrecht
FAO (2004) Assessing carbon stocks and modelling win–win scenarios of carbon sequestration through land-use changes. FAO, Rome. http://www.fao.org/docrep/007/y5490e/y5490e00.htm. Accessed 10 June 2011
Fernández-Núñez E, Rigueiro-Rodríguez A, Mosquera-Losadaa MR (2010) Carbon allocation dynamics one decade after afforestation with Pinus radiata D. Don and Betula alba L. under two stand densities in NW Spain. Ecol Eng 36:876–890
Gold MA, Garrett HE (2009) Agroforestry nomenclature, concepts, and practices. In: Garrett HE (ed) North American agroforestry: an integrated science and practice, 2nd edn. Am Soc Agron, Madison, pp 45–55
Haile SG, Nair PKR, Nair VD (2008) Carbon storage of different soil-size fractions in Florida silvopastoral systems. J Environ Qual 37:1789–1797
Howlett DS, Mosquera-Losada MR, Nair PKR, Nair VD, Rigueiro-Rodríguez A (2011a) Soil C storage in silvopastoral systems and a treeless pasture in northwestern Spain. J Environ Qual 40:825–832. doi:10.2134/jeq2010.0145
Howlett DS, Marcose MG, Mosquera-Losada M-R, Nair PKR, Nair VD (2011b). Soil carbon storage as influenced by tree cover in the Dehesa cork oak silvopasture of central-western Spain. J Environ Monitoring 13(7):1897–904
IPCC (2000) Land-use, land-use change, and forestry. A special report of the IPCC. In: Watson RT, Noble IR, Bolin B, Ravindranath NH, Verardo DJ, Dokken DJ (eds). Cambridge University Press, Cambridge, p 375
IPCC (Intergovernmental Panel on Climate Change) (2007) Climate change 2007: mitigation. Cambridge University Press, New York
Jenkinson DS (1990) The turnover of organic-carbon and nitrogen in soil. Philos Trans R Soc London Series B 329:361–368
Kimble JM, Lal R, Follett RF (2001) Methods for assessing soil C pools. In: Lal R, Kimble JM, Follett RF, Stewart BA (eds) Assessment methods for soil carbon. Lewis Publishers, Boca Raton, pp 3–12
Kirby KR, Potvin C (2007) Variation in carbon storage among tree species: implications for the management of a small-scale carbon sink project. For Ecol Manag 246:208–221
Kumar BM, George SJ, Jamaludheen V, Suresh TK (1998) Comparison of biomass production, tree allometry and nutrient use efficiency of multipurpose trees grown in wood lot and silvopastoral experiments in Kerala, India. For Ecol Manage 112:145–163
Lal R (2005) Forest soils and carbon sequestration. For Ecol Manage 220:242–258
Lal R (2010) Managing soils and ecosystems for mitigating anthropogenic carbon emissions and advancing global food security. Bioscience 60:708–721
López-Díaz ML, Rolo V, Moreno G (2011) Trees’ role in nitrogen leaching after organic, mineral fertilization: a greenhouse experiment. J Environ Qual 40:853–859. doi:10.2134/jeq2010.0165
Lugo AE, Cuevas E, Sanchez MJ (1990) Nutrients and mass in litter and soil of ten tropical tree plantations. Plant Soil 125:263–280
MIT (2010) Massachusetts institute of technology mission 2013, carbon sequestration. http://igutek.scripts.mit.edu/terrascope/index.php?page=Agroforestry. Accessed 20 June 2011
Moser EB, Saxton AM, Pezeshki SR (1990) Repeated measures analysis of variance: application to tree research. Can J For Res 20:524–535
Nadelhoffer KJ, Raich JW (1992) Fine root production estimates and belowground carbon allocation in forest ecosystems. Ecology 73:1139–1147
Nair PKR (2011) Methodological challenges in estimating carbon sequestration potential of agroforestry systems. In: Kumar BM, Nair PKR (eds) Carbon sequestration in agroforestry systems: opportunities and challenges. Springer, Dordrecht (in press)
Nair PKR, Kumar BM, Nair VD (2009) Agroforestry as a strategy for carbon sequestration. J Plant Nutr Soil Sci 172:10–23
Nair PKR, Nair VD, Kumar BM, Showalter JM (2010) Carbon sequestration in agroforestry systems. Adv Agron 108:237–307
Palm C, Tomich T, Van Noordwijk M, Vosti S, Alegre J, Gockowski J, Verchot L (2004) Mitigating GHG emissions in the humid tropics: case studies from the alternatives to slash-and-burn program (ASB). Environ Dev Sust 6:145–162
Parton WJ, Schimel DS, Cole CV, and Ojima DS (1987) Analysis of factors controlling soil organic-matter levels in great-plains grasslands. Soil Sci Soc Am J 51:1173–1179
Pearson T, Walker S, Brown S (2005) Land-use change and forestry project. Winrock International and the BioCarbon Fund of the World Bank, Washington DC, p 64. http://www.winrock.org/ecosystems/files/winrock-biocarbon_fund_sourcebook-compressed.pdf. Accessed 10 June 2011
Peichl M, Thevathasan NV, Gordon AM, Huss J, Abohassan R (2006) Carbon sequestration potentials in temperate tree-based intercropping systems, southern Ontario, Canada. Agroforest Syst 66:243–257
REDD (Reducing Emissions from Deforestation and Forest Degradation) (2011). http://www.un-redd.org. Accessed 20 June 2011
Roshetko JM, Delaney M, Hairiah K, Purnomosidhi P (2002) Carbon stocks in Indonesian homegarden systems: can smallholder systems be targeted for increased carbon storage? Am J Alt Agric 17:138–148
Schroeder P (1994) Carbon storage benefits of agroforestry systems. Agroforest Syst 27:89–97
Stamps WT, Linit MJ (1999) The problem of experimental design in temperate agroforestry. Agroforest Syst 44:187–196
Stern RD, Coe R, Allan EF, Dale IC (eds) (2004) Good statistical practice for natural resources research. CABI, Wallingford, p 388
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 125:159–166
Tonucci RG, Garcia R, Nair PKR, Nair VD, Bernardino FS (2011) Soil carbon storage in silvopasture and related landuse systems in the Brazilian Cerrado. J Environ Qual 40:833–841. doi:10.2134/jeq2010.0162
Udawatta RP, Jose S (2011) Carbon sequestration potential of agroforestry practices in temperate North America. In: Kumar BM, Nair PKR (eds) Carbon sequestration in agroforestry systems: opportunities and challenges. Springer, Dordrecht (in press)
UNFCCC (2006) Revised simplified baseline and monitoring methodologies for selected small-scale afforestation and reforestation project activities under the clean development mechanism. Bonn, Germany. http://cdm.unfccc.int/UserManagement/FileStorage/CDMWF_AM_A3II6AX6KGW5GBB7M6AI98UD3W59X4. Accessed 7 June 2011
UNFCCC (2007). Report of the conference of parties on its thirteenth session. Bali, Indonesia. In: United Nations framework convention on climate change. Geneva, Switzerland
Viaud V, Angers D, Walter C (2010) Toward landscape-scale modeling of soil organic matter dynamics in agroecosystems. Soil Sci Soc Am J 74:1847–1860
World Agroforestry Centre (2011) Agrofrestree database. http://www.worldagroforestrycentre.org/sea/Products/AFDbases/WD/. Accessed 23 May 2011
Zomer RJ, Trabucco A, Coe R, Place F (2009) Trees on farm: an analysis of global extent and geographical patterns of agroforestry. ICRAF working paper no. 89. World Agroforestry Centre, Nairobi, Kenya. http://www.worldagroforestry.org/downloads/publications/PDFs/WP16263.PDF. Accessed 10 June 2011
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This article is an improved and updated version of the publication listed as Nair (2011). The author thankfully acknowledges the critical comments and suggestions received from BM Kumar, M-R Moequera-Losada, VD Nair, G Schroth, and JM Showalter on that earlier version.
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Nair, P.K.R. Carbon sequestration studies in agroforestry systems: a reality-check. Agroforest Syst 86, 243–253 (2012). https://doi.org/10.1007/s10457-011-9434-z
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DOI: https://doi.org/10.1007/s10457-011-9434-z