Workshop 4 Carbon Sequestration in Agro-Ecological ......system. Each offset represents the...
Transcript of Workshop 4 Carbon Sequestration in Agro-Ecological ......system. Each offset represents the...
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CarbonProject
CarbonSequestrationinAgro-EcologicalSystems
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ProjectPartners
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Marin Carbon Project 2008
Results:
• Increased Soil C sequestration for 7 years
• Increased forage productivity (40%-70%)
• Increased soil water holding capacity (25%).
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ProjectGoalsandOverview
Potentialforatmosphericcarbonsequestrationinrangelandsoilsasaviableclimatemitigationandgreen-housegas(GHG)reductionmethodusingACRprotocol:
• Effectsofcompostapplicationongrazedgrasslands
• Carboncredits
• Economiccostsandbenefits
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ACRGrazedGrasslandProtocol
“ACRoverseestheregistrationandverificationofcarbonoffsetprojectsfollowingapprovedcarbonaccountingmethodologiesorprotocolsandissuesoffsetsonatransparentregistrysystem.Eachoffsetrepresentsthereductionorremovalfromtheatmosphereequivalenttoonemetrictonne ofcarbondioxide.TheoffsetsproductsarespecifictoACR'sdistinctoperationsintheCaliforniacompliancemarketandtheglobalvoluntarycarbonmarket.”
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Outcomes• Afullaccountingofcarboncycledynamics,carbonstorageand
associatedecologicalbenefitsprovidedbycompostadditiontorangelands.Potentialbenefitswillbeassessedinthecontextofpotentialpositiveandnegativeimpactstothenaturalenvironment
• Acompleteeconomiccostbenefitanalysisofprojectimplementation,includingassociatedecosystemservicesbenefits
• Facilitateknowledgetransfer/lessonslearnedtoabroadaudienceincludinglocalproducers,regionaldecisionmakers,stateandfederalagencies,andelectedofficials.
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PracticeAverageAnnual
CO2eSequestration
20yrCO2eSequestration
CO2eSequestrationatMaturity
RangelandCompost
638Mg
98,847Mg
162,619Mg(30years)
CroplandCompost(590)
2,060Mg. 23,200Mg43,374Mgat5%SOM
Shelterbelts(380)
98Mg
1,960Mg
7,840-19,260Mgat80years.
Hedgerows(422)
6Mg
120Mg
120Mg
PrescribedGrazing(528)
1,460Mg 29,200 29,200
RiparianRestoration
410to1,725Mg6,144-25,867Mgat15years
18,431-77,613Mgat45years.
NoTill(329) 39Mg 780Mg 780Mg
Minimum-Tillage(345)
100Mg 2,000Mg 2,000Mg
Silvopasture
(381)660Mg 13,200Mg 214,000Mg
NutrientManagement
(590)610Mg 12,200Mg 48,800
Totals 6,081-7,396Mg187,651-207,374Mg
527,164-597,766Mg
Context: Carbon Farm Plan
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Compost
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