ALUMINUM TOXICITY (A MODIFIER)

Mapping the global extent of soil constraints to crop growth plays an important role in developing strategies for agricultural production, environmental protection, and sustainable development at regional and global scales. The most widely used dataset is the Soil Fertility Capability Classification System (FCC) developed by Center for International Earth Science Information Network (CIESIN) and the Tropical Agriculture Program of the Earth Institute at Columbia University. HarvestChoice facilitated developing an updated version of FCC using the Harmonized World Soil Database v1.1. This new dataset will play a key role in HarvestChoice's forthcoming flagship study on the biophysical/economic impact assessment of agricultural production constraints in Sub-Saharan Africa.

By Sonya Ahamed ¹, Cheryl Palm ², and Pedro Sanchez ²

  1. Center for International Earth Science Information Network, The Earth Institute at Columbia University, Palisades, NY, USA
  2. Tropical Agriculture Program, The Earth Institute at Columbia University, Palisades, NY, USA

Mapping Soil Constraints

Mapping the global extent of soil constraints to crop growth can play an important role in developing strategies for agricultural production, environmental protection, and sustainable development at regional and global scales. The soil fertility capability classification system (FCC) is a widely used technical system for interpreting soil taxonomy and additional soil attributes in ways directly relevant to plant growth (Buol et al.1975). In 2003, FCC4 was released with eight top- and sub-soil texture types and 17 condition modifiers defined to quantitatively delimit the soil's capacity to provide ecosystem functions and services (Sanchez et al. 2003). As an update to the FCC4, HarvestChoice facilitated the development of an updated version using the Harmonized World Soil Database v1.1 (FAO/IIASA/ISRIC/ISSCAS/JRC 2009) as the underlying input data for analyzing 13 key modifiers that are the most relevant to achieving the Millennium Development Goals. This new dataset will play a key role in HarvestChoice's forthcoming flagship study on the biophysical/economic impact assessment of agricultural production constraints in Sub-Saharan Africa (planned to be carried out in 2011-2012).

List of 13 Layers

Please refer to Sanchez et al. 2003 for more details on each layer.

  • Clay in topsoil
  • Loam in topsoil
  • Sand in topsoil
  • Aluminum toxic (a modifier)
  • Calcareous (b modifier)
  • High leaching potential (e modifier)
  • Waterlogged (g modifier)
  • High P fixation (i modifier)
  • Low nutrient capital reserves (k modifier)
  • Sodic (n modifier)
  • Saline (s modifier)
  • Cracking clays (v modifier)
  • Volcanic (x modifier)

 

    

 

Download

Please fill out the data request form (Download instructions will be sent to your email)

References

Citation

HarvestChoice, 2010. "Updating Soil Functional Capacity Classification System." International Food Policy Research Institute, Washington, DC., and University of Minnesota, St. Paul, MN. Available online at http://harvestchoice.org/node/1435.

Dec 2, 2010