Relationship between soil organic carbon and Landsat TM data in eastern Washington

Analysis of digital data from Landsat Thematic Mapper (TM) images has been proposed as a complementary method for estimating surface organic carbon levels of soils. Our objective was to establish the relationship between soil organic carbon (SOC) and a selected transformation of TM band ratios corresponding to the soil component values in the Palouse region of eastern Washington State. TM data and surface SOC measurements were obtained and evaluated using linear regression method at four field-sites. Results showed that regression models, each pooled with two field-sites (Plaza and Pullmann, Thera and St. John) were appropriate for the data