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GTAP Resources: Resource Display

GTAP Resource #5724

"Assessing the Economic Impacts of Ecosystem Services within the GTAP Framework"
by Johnson, Justin, Uris Lantz Baldos, Thomas Hertel and Stephen Polasky

Understanding how different policies, conservation investments, or other external shocks affect both economic systems and ecosystems requires an integrated approach that accounts for changing human behavior and very high-resolution information on where ecosystem services are produced. In this talk, we present a new model that joins the GTAP model and database with the Integrated Valuation of Ecosystem Services and Tradeoffs (InVEST) model from The Natural Capital Project under three Shared Socioeconomic Pathway scenarios of climate and land-use change. Our model builds on existing work from a variety of sub-disciplines, including: integrated assessment modeling, land-use change and climate change, but represents the first time a fully general equilibrium model is paired with a global, landscape-scale (300m resolution) ecosystem service (ES) provision model.

We assessed three scenarios from the Shared Socioeconomic Pathways under the Intergovernmental Platform on Biodiversity and Ecosystem Services (IPBES) and compared them with current-day ES provision. Next, we applied a spatial allocation algorithm to downscale the 30km land-use change data provided by the Land-use Harmonization project for each SSP to 300m. We used the downscaled data to calculate global provision of three ecosystem services: yield increases from wild pollinators, coastal vulnerability mitigation from natural vegetation and water yield to basin reservoirs (for e.g. irrigation and hydropower). Third, we mapped how these changes in ES would affect various input parameters to the standard GTAP model and the GTAP-BIO-W extension model. Finally, we will report results from the GTAP model specific to several different policy-relevant sets of goals, including the Sustainable Development Goals and specific conservation goals.

Resource Details (Export Citation) GTAP Keywords
Category: 2019 Conference Paper
Status: Published
By/In: Presented at the 22nd Annual Conference on Global Economic Analysis, Warsaw, Poland
Date: 2019
Created: Johnson, J. (4/9/2019)
Updated: Johnson, J. (4/9/2019)
Visits: 2,180
- Climate change policy
- Climate impacts
- Land use
- Trade and the environment
- Water availability
- Agricultural policies
- Food prices and food security

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