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Simulating changes of organic carbon content in soil following tillage intensity and fertilizer N rate reduction

Ponzoni, Gilda and Marchetti, Rosa and Roggero, Pier Paolo and Iezzi, Giuseppe and Seddaiu, Giovanna and Corti, Giuseppe and Francaviglia, Rosa (2008) Simulating changes of organic carbon content in soil following tillage intensity and fertilizer N rate reduction. Italian Journal of Agronomy, Vol. 3 (3 Suppl.). ISSN 1125-4718. Article.

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Economic, environmental, and societal benefits are expected from good practices of soil carbon (C) management (Kimble et al., 2007). However, new tools are required for national and local policymakers to accurately estimate the effects of different agricultural management practices on greenhouse gas emissions and removals. The 2006 IPCC Guidelines for National Greenhouse Gas Inventories (IPCC, 2006), which provide methodologies for estimating national inventories of anthropogenic emissions and removals of greenhouse gases, together with the Good Practice Guidance for Land Use, Land-Use Change and Forestry (IPCC, 2003), provide internationally agreed methodologies for this purpose, and include the possibility of using simulation models as higher order methods for gas inventories in the Agriculture, Forestry and Other Land Use (AFOLU) sector. According to the IPCC Guidelines, models should undergo quality-checks, audits, and validations and be thoroughly documented.
Tillage intensity reduction is known to increase the soil organic C sink potential (Paustian et al., 1995; Al-Kaisi and Yin, 2005), whereas the effect on C sink of supplying soil with N fertilizer is less understood (Khan et al., 2007). The main objective of this study was to estimate the change of organic C content in the cultivated soil layer as a function of change in tillage intensity, in interaction with different fertilizer N rates. The Daisy model was used for this purpose, in view of its possible future application at regional scale for the estimation of AFOLU-related greenhouse gas emissions.

Item Type:Article
ID Code:4505
Uncontrolled Keywords:Soil carbon, N fertilizer, IPCC Guidelines
Subjects:Area 07 - Scienze agrarie e veterinarie > AGR/02 Agronomia e coltivazioni erbacee
Divisions:001 Università di Sassari > 01 Dipartimenti > Scienze agronomiche e genetica vegetale agraria
Publisher:Forum editrice udinese
Copyright Holders:© Italian Society for Agronomy
Publisher Policy:Depositato per gentile concessione dell'Editore e della Società italiana di agronomia
Additional Information:Poster presented at the Multi-functional agriculture: agriculture as a resource for energy and environmental preservation: 10. Congress of the European Society of Agronomy, Bologna, Italy, 15-19 September 2008.
Deposited On:07 Sep 2010 11:02

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