Dynamics of Soil Organic Carbon and Labile Carbon Fractions in Soil Aggregates Affected by Different Tillage Managements

Soil organic carbon dynamics jointly controlled by climate, carbon inputs, soil properties and soil carbon fractions.

Soil organic carbon (SOC) dynamics are regulated by the complex interplay of climatic, edaphic and biotic conditions. However, the interrelation of SOC and these drivers and their potential connection networks are rarely assessed quantitatively. Using observations of SOC dynamics with detailed soil properties from 90 field trials at 28 sites under different agroecosystems across the Australian ...

Tillage Effects on Soil Organic Carbon Fractions in Mediterranean

Limits to soil carbon stability; Deep, ancient soil carbon decomposition stimulated by new labile organic inputs

Carbon (C) buried deep in soil (below 1 m) is often hundreds to thousands of years old, though the stability and sensitivity of this deep C to environmental change are not well understood. We examined the C dynamics in three soil horizons and their responses to changes in substrate availability in a coarsetextured sandy spodosol (0.0e0.1, 1.0e1.3, and 2.7e3.0 m deep). Substrate additions were i...

Long-Term Soil Organic Carbon as Affected by Tillage and Cropping Systems

Soil Sci. Soc. Am. J. 74:915–921 Published online 18 Mar. 2010 doi:10.2136/sssaj2009.0362 Received 23 Sept. 2009. *Corresponding author ([email protected]). © Soil Science Society of America, 5585 Guilford Rd., Madison WI 53711 USA All rights reserved. No part of this periodical may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying...

Pbex for quantifying soil organic carbon redistribution affected by intensive tillage on steep slopes

Studying on spatial and temporal variation in soil organic carbon (SOC) is of great importance because of global environmental concerns. Tillage-induced soil erosion is one of the major processes affecting the redistribution of SOC in fields. However, few direct measurements have been made to investigate the dynamic process of SOC under intensive tillage in the field. Our objective was to test ...