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InVEST Tier 1 Carbon Model

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Page 1: InVEST Tier 1 Carbon Modeld2ouvy59p0dg6k.cloudfront.net/downloads/2_1_invest... · Tier 1 Carbon Storage Model! Atmosphere! Soil!type,!moisture! Microbes,!chemistry! Species HarvestedWoodProducts

InVEST Tier 1 Carbon Model  

Page 2: InVEST Tier 1 Carbon Modeld2ouvy59p0dg6k.cloudfront.net/downloads/2_1_invest... · Tier 1 Carbon Storage Model! Atmosphere! Soil!type,!moisture! Microbes,!chemistry! Species HarvestedWoodProducts

•  In  the  Tier  1  model  we  es1mate  carbon  stock  as  a  func1on  of  land  use  /  land  cover.  

 

•  Storage  indicates  the  mass  of  carbon  in  an  ecosystem  at  any  given  point  in  1me.  

•  Sequestra+on  indicates  the  change  in  carbon  storage  in  an  ecosystem  over  1me.  

•  Valua1on  is  applied  to  sequestra1on  

Carbon Storage and Sequestration  

Page 3: InVEST Tier 1 Carbon Modeld2ouvy59p0dg6k.cloudfront.net/downloads/2_1_invest... · Tier 1 Carbon Storage Model! Atmosphere! Soil!type,!moisture! Microbes,!chemistry! Species HarvestedWoodProducts

Tier 1 Carbon Storage Model  

Atmosphere  

Soil  type,  moisture  Microbes,  chemistry  

Species  Harvested  Wood  Products  

Aboveground  biomass  

Belowground  biomass  

Dead  wood  

Atmosphere  

Land  management  

Land  use  history  

Soil  carbon  

Climate  

Page 4: InVEST Tier 1 Carbon Modeld2ouvy59p0dg6k.cloudfront.net/downloads/2_1_invest... · Tier 1 Carbon Storage Model! Atmosphere! Soil!type,!moisture! Microbes,!chemistry! Species HarvestedWoodProducts

Tier 1 Carbon Storage Model  Atmosphere  

Soil  type,  moisture  Microbes,  chemistry  

Species  Harvested  Wood  Products  

Aboveground  biomass  

Belowground  biomass  

Dead  wood  

Atmosphere  

Land  management  

Land  use  history  

Soil  carbon  

5  pools          x          f(cost/ton)        =            Value  

Climate  

Page 5: InVEST Tier 1 Carbon Modeld2ouvy59p0dg6k.cloudfront.net/downloads/2_1_invest... · Tier 1 Carbon Storage Model! Atmosphere! Soil!type,!moisture! Microbes,!chemistry! Species HarvestedWoodProducts

Sequestration and Value  

2008  

Net  Present  Value  

Δ  in  C  

2058  

Page 6: InVEST Tier 1 Carbon Modeld2ouvy59p0dg6k.cloudfront.net/downloads/2_1_invest... · Tier 1 Carbon Storage Model! Atmosphere! Soil!type,!moisture! Microbes,!chemistry! Species HarvestedWoodProducts

Net  Present  Value    is  a  func1on  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  the  

Social  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 Modeld2ouvy59p0dg6k.cloudfront.net/downloads/2_1_invest... · Tier 1 Carbon Storage Model! Atmosphere! Soil!type,!moisture! Microbes,!chemistry! Species HarvestedWoodProducts

Input Data  Required  data:  

A  land  use  /  land  cover  (LULC)  map  

 Table  of  carbon  pools    (metric  tons  /  hectare)  

 

Page 8: InVEST Tier 1 Carbon Modeld2ouvy59p0dg6k.cloudfront.net/downloads/2_1_invest... · Tier 1 Carbon Storage Model! Atmosphere! Soil!type,!moisture! Microbes,!chemistry! Species HarvestedWoodProducts

Op1onal  data:    •  For  calcua1ng  C  stored  in  harvested  wood  produtcs:  

–  Map  of  1mber  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 Modeld2ouvy59p0dg6k.cloudfront.net/downloads/2_1_invest... · Tier 1 Carbon Storage Model! Atmosphere! Soil!type,!moisture! Microbes,!chemistry! Species HarvestedWoodProducts

•  Local  plot  studies  •  Published  analyses  on  similar  regions  •  IPCC  tables  

Carbon Pool Data  Carbon Pool Data

Page 10: InVEST Tier 1 Carbon Modeld2ouvy59p0dg6k.cloudfront.net/downloads/2_1_invest... · Tier 1 Carbon Storage Model! Atmosphere! Soil!type,!moisture! Microbes,!chemistry! Species HarvestedWoodProducts

•  Map  of  current  carbon  storage    (Mg/cell)  

•  Map  of  future  carbon  storage      -­‐  If  future  land  use  provided  

•  Carbon  sequestra1on  map      =  (future  -­‐  present  carbon  storage)  

•  Map  of  economic  value  of  carbon  sequestered  

Output  

Page 11: InVEST Tier 1 Carbon Modeld2ouvy59p0dg6k.cloudfront.net/downloads/2_1_invest... · Tier 1 Carbon Storage Model! Atmosphere! Soil!type,!moisture! Microbes,!chemistry! Species HarvestedWoodProducts

•  Simple,  requires  rela1vely  liXle  data,  thus  also  works  for  data-­‐sparse  regions  

 •  Both  biophysical  (carbon  storage  /  sequestra1on)  and  economic  valua1on  modeling  possible  

Strengths  

Page 12: InVEST Tier 1 Carbon Modeld2ouvy59p0dg6k.cloudfront.net/downloads/2_1_invest... · Tier 1 Carbon Storage Model! Atmosphere! Soil!type,!moisture! Microbes,!chemistry! Species HarvestedWoodProducts

•  Output  is  only  as  detailed  and  reliable  as  the  land  use  classes  and  carbon  pool  data  that  are  input.  

•  Carbon  sequestra1on  does  not  occur  in  an  area  unless  the  area’s  land  use  changes  over  1me  or  wood  is  harvested.  

 

Limitations

•     Simplified  carbon  cycle        

•     Economic  valua1on  assumes  a                    linear  trend  in  sequestra1on                over  1me    

Page 13: InVEST Tier 1 Carbon Modeld2ouvy59p0dg6k.cloudfront.net/downloads/2_1_invest... · Tier 1 Carbon Storage Model! Atmosphere! Soil!type,!moisture! Microbes,!chemistry! Species HarvestedWoodProducts

Land cover transitions  

T2  

Storag

e  in  Biomass   Reality  

Model  T1  

Forest  (young)  

Forest  (old)  

T2  T1  

Forest  

Page 14: InVEST Tier 1 Carbon Modeld2ouvy59p0dg6k.cloudfront.net/downloads/2_1_invest... · Tier 1 Carbon Storage Model! Atmosphere! Soil!type,!moisture! Microbes,!chemistry! Species HarvestedWoodProducts

•  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

Page 15: InVEST Tier 1 Carbon Modeld2ouvy59p0dg6k.cloudfront.net/downloads/2_1_invest... · Tier 1 Carbon Storage Model! Atmosphere! Soil!type,!moisture! Microbes,!chemistry! Species HarvestedWoodProducts

Gains and losses in carbon stocks from 2008 to 2058 in Sumatra, Indonesia

2008

Carbon gain

Carbon loss

2058

Page 16: InVEST Tier 1 Carbon Modeld2ouvy59p0dg6k.cloudfront.net/downloads/2_1_invest... · Tier 1 Carbon Storage Model! Atmosphere! Soil!type,!moisture! Microbes,!chemistry! Species HarvestedWoodProducts

Dharmasraya  district,  Sumatra,  Indonesia  Carbon  gains  and  losses  under  alterna1ve  scenarios  

Loss  

Gain  

2008  to  Green  Vision     2008  to  Business  as  Usual  Plan    

Page 17: InVEST Tier 1 Carbon Modeld2ouvy59p0dg6k.cloudfront.net/downloads/2_1_invest... · Tier 1 Carbon Storage Model! Atmosphere! Soil!type,!moisture! Microbes,!chemistry! Species HarvestedWoodProducts

Priority  districts  for  inves1ng  in  forest  carbon  projects  

High  priority  districts  have:    -­‐ High  deforesta1on  risk  -­‐   Large  biomass  carbon  stocks  -­‐   Rela1vely  lower  agricultural  value  

Page 18: InVEST Tier 1 Carbon Modeld2ouvy59p0dg6k.cloudfront.net/downloads/2_1_invest... · Tier 1 Carbon Storage Model! Atmosphere! Soil!type,!moisture! Microbes,!chemistry! Species HarvestedWoodProducts