County Weighted Average Carbon Index
Author: Bradley Miller
This map shows the Iowa Carbon Index, which represents the weighted average estimated total soil organic carbon content to a depth of one meter, expressed as an index from 0 to 100. The index is calculated only for mineral soils, excluding organic soils. Higher values indicate greater potential carbon sequestration, which is important for soil fertility, climate mitigation, and long-term soil health. This data aids in evaluating regional carbon storage and identifying areas for conservation or regenerative agricultural practices.
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Source:
Produced by the Geospatial Laboratory for Soil Informatics (GLSI) at Iowa State University. Date: April 26, 2005.
Resolution:
County-level resolution; displayed as a statewide static image
Interpretation:
Each county is color-coded by its average estimated soil organic carbon index, based on mineral soils only. These values are derived from modeling and soil data to support understanding of regional carbon content distribution.
Suggested Use:
Useful in identifying priority regions for soil health programs, carbon sequestration projects, and regenerative agriculture. The index helps inform strategies to improve soil carbon retention and assess ecosystem service potential at the county level.