Land-Use Impact On Soil Carbon Sequestration.

Land-use/land covers influence soil carbon sequestration. Composite soil samples  from 5, 10 and 15 years no-till, woodland (converted from cropland), pastures (converted from cropland), and conservation reserve program (CRP) at different depths were randomly collected (GPS guided) to evaluate the impact of land-use practices on soil C sequestration. Soil samples were analyzed for active, passive and total C, total N and selected basic properties. The active, passive and total C concentration, stock, and sequestration varied significantly in a quadratic manner by land-use practices over time. Total N content showed a significant stoichiometric relationship with various C fractions to influence carbon sequestration in soil.