From paleoclimate variables to prehistoric agriculture: Using a process-based agro-ecosystem model to simulate the impacts of Holocene climate change on potential agricultural productivity in Provence, France
This paper explores the relationship between past climate and prehistoric Mediterranean agriculture by adapting a process-based dynamic vegetation model to estimate potential agricultural productivity under climate scenarios that characterize the extremes of Mediterranean climate in the Holocene. We adapt LPJmL (the Lund-Potsdam-Jena-managed-land model [Bondeau et al., 2007]), a process-based dynamic vegetation model, to the modeling of potential agricultural productivity in the past. Calibrating this model for past crops and agricultural practices and using a downscaling approach to produce high spatiotemporal resolution paleoclimate data, we produce quantitative estimates of potential yields under past climatic conditions derived from four Holocene climatic extremes (warm/wet, warm/dry, cold/wet, and cold/dry) under two different assumptions (approximate high and low limits) about the intensity of agricultural practice. We here discuss this process with reference to a case study in Provence, examining the methodology and data requirements for modeling past agriculture using LPJmL and considering the implications of the range of variability in potential agricultural productivity under distinct climate conditions. We focus particularly on comparing the range of variability induced by climatic shifts with that achievable through changes in agricultural practices as a means of approaching questions of past vulnerability and resilience. (C) 2018 Elsevier Ltd and INQUA. All rights reserved.
1.Avignon Univ, Aix Marseille Univ, Inst Mediterraneen Biodivers & Ecol Marine & Cont, CNRS,IRD, Avignon, France 2.Aix Marseille Univ, GREQAM, Aix En Provence, France 3.Aix Marseille Univ, CNRS, Coll France, IRD,CEREGE, Aix En Provence, France 4.Ecole Hautes Etud Sci Sociales, CAMS EHESS, 1, Paris, France 5.Aix Marseille Univ, Aix En Provence, France 6.Aix Marseille Univ, Ctr Camille Julian, CNRS, Minist Culture, Aix En Provence, France 7.Univ Strasbourg, UMR 7044, ArcHiMedE Archeol & Hist Ancienne Mediterranee E, Strasbourg, France 8.Aix Marseille Univ, LabEx OT Med, Aix En Provence, France 9.Int Ctr Water Resources & Global Change UNESCO, Fed Inst Hydrol, Koblenz, Germany
Recommended Citation:
Contreras, Daniel A.,Bondeau, Alberte,Guiot, Joel,et al. From paleoclimate variables to prehistoric agriculture: Using a process-based agro-ecosystem model to simulate the impacts of Holocene climate change on potential agricultural productivity in Provence, France[J]. QUATERNARY INTERNATIONAL,2019-01-01,501:303-316