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Asian Journal of Agricultural Research
  Year: 2009 | Volume: 3 | Issue: 3 | Page No.: 55-66
DOI: 10.3923/ajar.2009.55.66
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Effects of Agronomic Practices on the Soil Carbon Storage Potential in Northern Tunisia

N. Brahim, T. Gallali and M. Bernoux

Sub-humid and semi-arid zones comprise a land area of about approximately 1/3 of Tunisia, good agricultural soils and major organic carbon storage are situated in this region. The objective of this study is to investigate the organic carbon distribution and stocks in soils of this region under different land uses by using different investigations: (1) The conversion from natural forest to agricultural land caused significant loss of Soil Organic Carbon (SOC) stock, it induces a decrease of SOC stock with 19.33 t C ha-1, (2) however, restoring forestry after conversion from agricultural ecosystems to forest, we found an increase of SOC stock with 0.42 t C/ha/year, (3) soil carbon sinks increase most rapidly under practice of no-tillage compared with conventional tillage, no-tillage treatment was found to increase the storage of OC in the surface layer 0-20 cm compared to conventional tillage and (4) irrigation with saline water stock higher than irrigation with freshwater only at superficial layer. Although, under this depth, irrigation with freshwater and at total profile stock higher than saline water. SOC stock is 148.5 t ha-1 in the freshwaters irrigated soils against 139.6 t ha-1 in saline water irrigated soil.
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  •    Climate Change and Food Security in Africa
  •    Land use Change Effects on Carbohydrate Fractions, Total and Particulate Organic Matter of Forest Soils in Central Zagros Mountains
  •    Effects of Deficit Irrigation Regime and Interval on Chemical Properties and Paddy Rice Yield in Sudan Savanna of Nigeria
  •    Carbon Stock by Soils and Departments in Tunisia
How to cite this article:

N. Brahim, T. Gallali and M. Bernoux, 2009. Effects of Agronomic Practices on the Soil Carbon Storage Potential in Northern Tunisia. Asian Journal of Agricultural Research, 3: 55-66.

DOI: 10.3923/ajar.2009.55.66






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