This report presents the model created in response to the recommendation by a report, documented in Crossman et al. (2018), to develope a new integrated modelling approach linking two existing models, namely the Integrated Valuation of Ecosystem Services and Tradeoffs (InVEST) model from the Natural Capital Project, and the Global Trade Analysis Project (GTAP) Computable General Equilibrium (CGE) model from Purdue University.