farming carbon
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Farming Carbon. Soil Carbon Sequestration By Thea Hassan. Carbon Sequestration. Carbon capture and storage Where to store it? Expensive to capture the carbon. Global Carbon Sinks. Measurements in petagrams = 1 billion ton. Pedologic Sink. - PowerPoint PPT PresentationTRANSCRIPT
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Farming Carbon
Soil Carbon SequestrationBy Thea Hassan
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Carbon Sequestration
• Carbon capture and storage
• Where to store it?
• Expensive to capture the carbon
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Global Carbon Sinks
38000
5000
2500
760 560
Oceanic
Geologic
Pedologic
Atmosperhic
Biotic
Measurements in petagrams= 1 billion ton
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Pedologic Sink
• Composed of soil inorganic carbon and soil organic carbon (SOC)
• SOC vital for plant processes
• ‘‘soil organic matter is one of our most important national resources; its unwise exploitation has been devastating; and it must be given its proper rank in any conservation policy.’’ –Albrecht, 1938
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SOC Depletion
• Biomass burning• Tropical Deforestation• Agricultural Activities• Drainage of Wetlands• Plowing
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Soil Organic Carbon
• Historically, loss of ~55-78 Gt of Carbon• Varies depending on:
– Climate– Vegetation Cover– Land Use– Nature of Parent Materials
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SOC Restoration
• Restore the depleted sink• Recommended Management Practices:
– Afforestation– Conversion– Conservation Agriculture– Crop Rotations– Integrated Nutrient ManagementReduce energy needs by 10%-40%
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Benefits of SOC Restoration
• Climate Change Mitigation
• Increased Agronomic Activity
• Cost Effective and Natural
• Decrease Effects of Nutrient Run Off
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Potential Costs
• Hidden Carbon Costs– Irrigation– Fertilizer Use
• Stability of Carbon
• Resource Poor Farmers
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Summary
• Natural sequestration to capture carbon
• Storage benefits the land
• Carbon credits exchange
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Thank You!
• Questions?