Estimated Scenario:
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Source of Data Used to Project Changes in Hardiness Zones: The data used to generate these maps are sourced from this publication of the U.S. Forest Service: Mathews, S.N., L.R. Iverson, M.P. Peters, and A.M. Prasad. 2018. Assessing potential climate change pressures across the conterminous United States: mapping plant hardiness zones, heat zones, growing degree days, and cumulative drought severity throughout this century.