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GTAP Resource #7230

"New Induced Land Use Change (ILUC) emissions assessment: Updates from IPCC guidelines and new estimates of soil carbon from the Harmonized World Soil Database (HWSD)"
by Benavidez, Lauren, Shuo Chen, Ye Yuan and Qianlai Zhuang


Abstract
Due to the current relevance of biofuel production as an alternative to petroleum products for energy generation, assessing the resulting emissions due to land use changes associated with each biofuel is imperative. These emissions are known as induced land use change (ILUC) emissions. Previously, land conversion to biofuels was studied using simulations in GTAP-BIO, which were later transformed into emission equivalents using complementary tools like the AEZ-EF model. Most of the data in the AEZ-EF model are emission factors retrieved from the IPCC inventory guidelines; however, guidelines have been updated, and the model has not. At the same time, the model uses carbon data that has been reviewed two times since its introduction and representations of land cover that were originally created to represent agricultural land in 2000. A correct estimation of ILUC values is an important policy tool since major bioenergy-focused organizations consider indirect land-use change as a parameter to assign limits to the use of biofuels. Given this need to accurately measure ILUC emissions, the present paper proposed to update the AEZ-EF model by first introducing the new emission factors reported by the IPCC and second leveraging from new, more accurate land cover data derived from MODIS to obtain new estimates of soil organic carbon and with these two innovations assess the emissions related to biofuels path in a more accurate framework. The paper intends to obtain soil organic carbon estimates for 18 agroecological zones and 19 GTAP regions to assess the ILUC values. The results for the IPCC emissions factors updates used in GTAP-BIO land use change simulations for biofuels pathways indicate an overall reduction in emissions.


Resource Details (Export Citation) GTAP Keywords
Category: 2024 Conference Paper
Status: Not published
By/In: Presented during the 27th Annual Conference on Global Economic Analysis (Fort Collins, Colorado, USA)
Date: 2024
Version: 1
Created: Benavidez, L. (4/13/2024)
Updated: Benavidez, L. (4/15/2024)
Visits: 75
- Climate change policy
- Land use
- Renewable energy


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