Carbon and nitrogen pools in aggregate size fractions as affected by sieving method and land use intensification

• DOI: 10.1016/j.geoderma.2017.05.044
• Publication Date: 2017-06-02T23:45:12Z
• Authors: Sutie Xu; Maria L. Silveira; Lucy W. Ngatia; Anna E. Normand; Lynn E. Sollenberger; K. Ramesh Reddy
• Keywords: Podzol

Abstract Soil organic carbon (C) is a key component regulating grazing land ecosystem production and sustainability. In this study, we investigated the impacts of wet vs. dry physical separation of soil C fractions in representative sandy Coastal Plain Spodosols subjected to different levels of management intensification. X-ray diffraction and solid-state 13C nuclear magnetic resonance (NMR) spectroscopy were used to characterize the structural composition of the fine (