invest tier 1 carbon model. in the tier 1 model we estimate carbon stock as a function of land use /...
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![Page 1: InVEST Tier 1 Carbon Model. In the Tier 1 model we estimate carbon stock as a function of land use / land cover. Storage indicates the mass of carbon](https://reader036.vdocument.in/reader036/viewer/2022062718/56649ea85503460f94baaf36/html5/thumbnails/1.jpg)
InVEST Tier 1 Carbon Model
![Page 2: InVEST Tier 1 Carbon Model. In the Tier 1 model we estimate carbon stock as a function of land use / land cover. Storage indicates the mass of carbon](https://reader036.vdocument.in/reader036/viewer/2022062718/56649ea85503460f94baaf36/html5/thumbnails/2.jpg)
• In the Tier 1 model we estimate carbon stock as a function of land use / land cover.
• Storage indicates the mass of carbon in an ecosystem at any given point in time.
• Sequestration indicates the change in carbon storage in an ecosystem over time.
• Valuation is applied to sequestration
Carbon Storage and Sequestration
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Tier 1 Carbon Storage Model
Atmosphere
Soil type, moistureMicrobes, chemistry
SpeciesHarvested Wood Products
Aboveground biomass
Belowground biomass
Dead wood
Atmosphere
Land management
Land use history
Decay
Soil carbon
Climate
![Page 4: InVEST Tier 1 Carbon Model. In the Tier 1 model we estimate carbon stock as a function of land use / land cover. Storage indicates the mass of carbon](https://reader036.vdocument.in/reader036/viewer/2022062718/56649ea85503460f94baaf36/html5/thumbnails/4.jpg)
Tier 1 Carbon Storage ModelAtmosphere
Soil type, moistureMicrobes, chemistry
SpeciesHarvested Wood Products
Aboveground biomass
Belowground biomass
Dead wood
Atmosphere
Land management
Land use history
Soil carbon
Decay
5 pools x f(cost/ton) = Value
Climate
![Page 5: InVEST Tier 1 Carbon Model. In the Tier 1 model we estimate carbon stock as a function of land use / land cover. Storage indicates the mass of carbon](https://reader036.vdocument.in/reader036/viewer/2022062718/56649ea85503460f94baaf36/html5/thumbnails/5.jpg)
Sequestration and Value
2008
Future Value
Net Present Value
Δ in C
2058
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Net Present Value is a function of:
• Market discount rate• Rate of change in the social value of carbon• Social or market cost of carbon
Carbon model is most appropriate for valuing theSocial cost of carbon: The price of current and
future damage caused by releasing a ton of carbon into the atmosphere
Approach to Valuation
![Page 7: InVEST Tier 1 Carbon Model. In the Tier 1 model we estimate carbon stock as a function of land use / land cover. Storage indicates the mass of carbon](https://reader036.vdocument.in/reader036/viewer/2022062718/56649ea85503460f94baaf36/html5/thumbnails/7.jpg)
Input Data
Required data:A land use / land cover (LULC) map
Table of carbon pools (metric tons / hectare)
![Page 8: InVEST Tier 1 Carbon Model. In the Tier 1 model we estimate carbon stock as a function of land use / land cover. Storage indicates the mass of carbon](https://reader036.vdocument.in/reader036/viewer/2022062718/56649ea85503460f94baaf36/html5/thumbnails/8.jpg)
Optional data:
• For calcuating C stored in harvested wood produtcs:– Map of timber harvest land parcels with data on– frequency of harvest– annual harvest amount – decay rate of wood products– density / volume factors
• Future land use map
• Economic data (carbon value / price, discount rate)
Input Data
![Page 9: InVEST Tier 1 Carbon Model. In the Tier 1 model we estimate carbon stock as a function of land use / land cover. Storage indicates the mass of carbon](https://reader036.vdocument.in/reader036/viewer/2022062718/56649ea85503460f94baaf36/html5/thumbnails/9.jpg)
• Local plot studies• Published analyses on similar regions• IPCC tables
Carbon Pool DataCarbon Pool Data
![Page 10: InVEST Tier 1 Carbon Model. In the Tier 1 model we estimate carbon stock as a function of land use / land cover. Storage indicates the mass of carbon](https://reader036.vdocument.in/reader036/viewer/2022062718/56649ea85503460f94baaf36/html5/thumbnails/10.jpg)
• Map of current carbon storage (Mg/cell)
• Map of future carbon storage - If future land use provided
• Carbon sequestration map = (future - present carbon storage)
• Map of economic value of carbon sequestered
Output
![Page 11: InVEST Tier 1 Carbon Model. In the Tier 1 model we estimate carbon stock as a function of land use / land cover. Storage indicates the mass of carbon](https://reader036.vdocument.in/reader036/viewer/2022062718/56649ea85503460f94baaf36/html5/thumbnails/11.jpg)
• Simple, requires relatively little data, thus also works for data-sparse regions
• Both biophysical (carbon storage / sequestration) and economic valuation modeling possible
Strengths
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• Output is only as detailed and reliable as the land use classes and carbon pool data that are input.
• Carbon sequestration does not occur in an area unless the area’s land use changes over time or wood is harvested.
Limitations
• Simplified carbon cycle
• Economic valuation assumes a linear trend in sequestration over time
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Land cover transitions
T2
Stor
age
in B
iom
ass Reality
Model
T1
Forest(young)
Forest(old)
T2T1
Forest
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• Land use planners: Compare consequences of future scenarios
• Ecosystem service tradeoffs
• Carbon market: First-pass analysis
• Not appropriate for precise cost-benefit analysis etc
Application
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Gains and losses in carbon stocks from 2008 to 2058 in Sumatra, Indonesia
2008
Vision
Plan
Carbon gain
Carbon loss
2058
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Dharmasraya district, Sumatra, IndonesiaCarbon gains and losses under alternative scenarios
Loss
Gain
2008 to Green Vision 2008 to Business as Usual Plan
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Priority districts for investing in forest carbon projects
High priority districts have:
-High deforestation risk- Large biomass carbon stocks- Relatively lower agricultural value
![Page 18: InVEST Tier 1 Carbon Model. In the Tier 1 model we estimate carbon stock as a function of land use / land cover. Storage indicates the mass of carbon](https://reader036.vdocument.in/reader036/viewer/2022062718/56649ea85503460f94baaf36/html5/thumbnails/18.jpg)