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Description
Simulates impact of emission reductions resulting from decreases in deforestation and increased carbon sequestration resulting from aforestation (planting of trees on land where forests formerly existed).

Input variables
Deforestation

  • Parameter value of 1 assumes continued constant future emissions from deforesation of 1.5 billion tons of carbon per year
  • Parameter value of 0 assumes 90% reduction in deforestation by 2050, to 0.15 billion tons of carbon per year

Aforestation

  • Parameter value of 1 assumes, under the BAU scenario, increased sequestration resulting from aforestation of 1.3 billion tons of carbon in 2030, decreasing to 0.7 tons of carbon in 2100
  • Parameter value of 0 assumes no increased sequestration resulting from aforestation

Key assumptions
Deforestation

  • Parameter value of 1 based on continuation of BAU levels of deforestation
  • Parameter value of 0 based on nearly complete eradication of land use practices that result in deforestation (90% reduction)

Aforestation

  • Paramter value of 0 based on no increase in tree planting
  • Parameter value of 1 based on achieving maximum level of aforestation projected as being feasible by the IPCC

Output variables

  • Future emissions from deforesation (feeds into Carbone cycle module)
  • Future sequestration from aforesation (feeds into Carbon cycle module)


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