Land use change from wetland to farmland affects the amount of organic carbon in soil aggregates. The study used a method to separate soil into different sizes and found that the 2,000-250 μm size had the highest organic carbon content. This size of soil aggregate was most impacted by the land use change. The shift from wetland to farmland significantly altered the soil carbon pools, with the 2,000-250 μm size being particularly sensitive to this change.