Key references
Amundson, R. 2001. The carbon budget in soils. Annu. Rev. Earth Planet. Sci. 2001. 29:535–62.
Ellert, B. H. & Bettany, J. R. 1995. Calculation of organic matter and nutrients stored in soils under contrasting management regimes. Can. J. Soil Sci. 75:529-538.
IPCC. 2003. Good Practice Guidance for Land Use, Land-Use Change and Forestry, In Penman, J., et al., eds. Institute for Global Environmental Strategies (IGES), Japan.
IPCC. 2006. IPCC Guidelines for National Greenhouse Gas Inventories. Volume 4: Agriculture, Forestry and Other Land Use. Eggleston, H.S., Buendia, L., Ngara, T., and Tanabe, K. (eds). IGES, Japan. http://www.ipcc-nggip.iges.or.jp/public/gpglulucf/gpglulucf_files/GPG_LULUCF_FULL.pdf.
Lal, R. 1997. Residue management, conservation tillage and soil restoration for mitigating greenhouse effect by CO2–enrichment. Soil Tillage Res. 43:81–107.
Lee, J., Wopmans, J.W., Rolston, D.E., Baer, S.G., and Six, J. 2009. Determining soil carbon stock changes: Simple bulk density corrections fail. Agriculture, Ecosystems and Environment 134:251-256.
Olson, K. R. 2003. Soil organic carbon sequestration, storage, retention and loss in U.S. croplands: issues paper for protocol development. Geoderma 195-196: 201–206.
Rui, W.Y. & Zhang, W.J. 2010. Effect size and duration of recommended management practices on carbon sequestration in paddy field in Yangtze Delta Plain of China: A meta-analysis Agriculture, Ecosystems and Environment 135:199-205.
UNFCCC. 2006. Approved afforestation and reforestation baselines methodology AR-AM0002: "Restoration of degraded lands through afforestation/reforestation".
Vandenbygaart, A.J. & Angers, D.A. (2006) Towards accurate measurements of soil organic carbon stock change in agroecosystems. Canadian Journal of Soil Science, 86(3): 465-471.
Protocols to measure carbon
Chappell, A., Baldock, J.A., Viscarra Rossel, R.A. 2013. Sampling soil organic carbon to detect change over time. CSIRO, Australia. 52 pages. http://www.climatechange.gov.au/sites/climatechange/files/files/reducing-carbon/csiro-report-sampling-soil-organic-carbon-detect-temporal-change.pdf
Donovan, P. 2013. Measuring soil carbon change: A flexible, practical, local method. 56 pages. http://soilcarboncoalition.org/files/MeasuringSoilCarbonChange.pdf
Ellis, J., Larsen, K. 2008. Measurement, reporting and Verification of Mitigation actions and commitments. Organization for Economic Co-operation and Development: International Energy Agency. 26 pages. http://www.oecd.org/env/cc/41762333.pdf.
Hairiah, K., Dewi, S., Agus, F., Velarde, S., Ekadinata, A., Rahayu, S., van Noordwijk, M., 2011. Measuring Carbon Stocks Across Land Use Systems: A Manual. Bogor, Indonesia. World Agroforestry Centre (ICRAF), SEA Regional Office, 154 pages. http://www.worldagroforestry.org/sea/Publications/files/manual/MN0050-11/MN0050-11-1.PDF
Timothy Pearson, T, Walker, Sarah, Brown, S. 2008. Sourcebook for Land Use, Land-Use Change and Forestry Projects. 64 pages. http://www-wds.worldbank.org/external/default/WDSContentServer/WDSP/IB/2013/07/16/000333037_20130716105737/Rendered/PDF/795480WP0Sourc0CF0Projects00PUBLIC0.pdf.
Research centers/associations
Africa Soil Information Service (AfSIS): http://www.africasoils.net/library?page=1&f%5Bkeyword%5D=73
Forest carbon portal: http://www.forestcarbonportal.com
Soil carbon coalition: http://soilcarboncoalition.org