Soil Quality
Soil Quality Metric Description: This metric focus on soil quality globally and identifies those areas with most productive soil to produce crops.
Figure 1. Global rank of soil quality Data Sources: Dataset Used
Reference
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http://databasin.org/search/#q uery=Global%20AgroFischer, G., F. Nachtergaele, S. ecological%20Zones%20Assess Prieler, H.T. van Velthuizen, L. Soil Qualities ment%20for%20Agriculture Verelst, D. Wiberg, 2008. Global for Crop or Agro-ecological Zones Assessment Doc Production http://webarchive.iiasa.ac.at/R for Agriculture (GAEZ 2008). IIASA, (2008) esearch/LUC/External-WorldLaxenburg, Austria and FAO, Rome, soilItaly. database/HTML/SoilQualityDat a.html?sb=11 *Doc indicates metadata data identifies a Creative Commons Attribution 3.0 (see http://creativecommons.org/licenses/by/3.0/) and/or no use restrictions, Author indicates permission granted by publisher of data, Both indicates both metadata documentation and author provided permission.
Methods Description: To create a soil quality metric we summed seven layers of soil quality based on constraints with tillage, nutrient availability, oxygen availability, rooting conditions, calcium carbonate and gypsum toxicities, excess salts and nutrient retention capacity (Fischer et al., 2008). Summed seven layers with only constraint values (i.e. None or Slight - 1, Moderate – 2, Severe -3, Very Severe-4). Inverted summed layers so highest value equal highest soil quality. Inverted summed values and normalized to 1-100. All areas without any constraint values (i.e. non-soil and/or permafrost) set to 0. Detailed Data Processing Steps: Step 1. Summed seven soil quality constraints data Step 2. Inverted summed values Step 3. Spatially-ranked summed values Preferred Data Citation: The Nature Conservancy (2015). Soil quality ranking for Biodiversity and Ecosystems Services Trends and Conditions Assessment Tool (BestCat). Available at www.bestcat.org, date downloaded. Please also cite all source data which derived this ranking. Contact: Jim Oakleaf, Conservation Geographer Development by Design, The Nature Conservancy [email protected] References:
Fischer, G., Nachtergaele, F., Prieler, S., Velthuizen, H. T. van, Verelst, L., & Wiberg, D. (2008). Global Agro-ecological Zones Assessment for Agriculture.
Figure 1. Global rank of soil quality Data Sources: Dataset Used
Reference
Access
Permission*
http://databasin.org/search/#q uery=Global%20AgroFischer, G., F. Nachtergaele, S. ecological%20Zones%20Assess Prieler, H.T. van Velthuizen, L. Soil Qualities ment%20for%20Agriculture Verelst, D. Wiberg, 2008. Global for Crop or Agro-ecological Zones Assessment Doc Production http://webarchive.iiasa.ac.at/R for Agriculture (GAEZ 2008). IIASA, (2008) esearch/LUC/External-WorldLaxenburg, Austria and FAO, Rome, soilItaly. database/HTML/SoilQualityDat a.html?sb=11 *Doc indicates metadata data identifies a Creative Commons Attribution 3.0 (see http://creativecommons.org/licenses/by/3.0/) and/or no use restrictions, Author indicates permission granted by publisher of data, Both indicates both metadata documentation and author provided permission.
Methods Description: To create a soil quality metric we summed seven layers of soil quality based on constraints with tillage, nutrient availability, oxygen availability, rooting conditions, calcium carbonate and gypsum toxicities, excess salts and nutrient retention capacity (Fischer et al., 2008). Summed seven layers with only constraint values (i.e. None or Slight - 1, Moderate – 2, Severe -3, Very Severe-4). Inverted summed layers so highest value equal highest soil quality. Inverted summed values and normalized to 1-100. All areas without any constraint values (i.e. non-soil and/or permafrost) set to 0. Detailed Data Processing Steps: Step 1. Summed seven soil quality constraints data Step 2. Inverted summed values Step 3. Spatially-ranked summed values Preferred Data Citation: The Nature Conservancy (2015). Soil quality ranking for Biodiversity and Ecosystems Services Trends and Conditions Assessment Tool (BestCat). Available at www.bestcat.org, date downloaded. Please also cite all source data which derived this ranking. Contact: Jim Oakleaf, Conservation Geographer Development by Design, The Nature Conservancy [email protected] References:
Fischer, G., Nachtergaele, F., Prieler, S., Velthuizen, H. T. van, Verelst, L., & Wiberg, D. (2008). Global Agro-ecological Zones Assessment for Agriculture.
