Spatial variability and land use change
Ike, Jessica Claire
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The spatial dependencies of soil carbon in relation to land use and soil type under longleaf pine (Pinus palustris) ecosystems in the Coastal Plain of Georgia were compared and soil carbon contents were predicted across the landscape. The effects of varying land use and soil types on carbon concentration and contents were investigated. Land use was found to be a more adequate predictor of soil C than soil type. Comparisons were made between land cover and soil type versus ordinary kriging from field samples to estimate soil C concentrations and contents. Samples were stratified according to land cover or soil great groups and mean values assigned to polygons. For comparison, point C estimates were used to predict C concentrations across the landscape. Black carbon (BC) contents were determined and compared across fire suppressed and regularly burned longleaf pine-wiregrass stands. BC contents were greatest in areas that have regular burn prescriptions.