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Conference Agenda

Overview and details of the sessions of this conference. Please select a date or location to show only sessions at that day or location. Please select a single session for detailed view (with abstracts and downloads if available).

Please note that all times are shown in the time zone of the conference. The current conference time is: 10th Sept 2026, 07:07:59pm CEST (Norway)

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Daily Overview

Session

Climate damage and impacts
Location: Auditorium F
Session Chair: Berk Oktem, University of Paris-Saclay, INRAE, AgroParisTech, Paris Saclay Applied Economics, Palaiseau

Presentation 4

Droughts and Agricultural Land Concentration in France

Raja Chakir, Berk Öktem, Emilien Veron

University of Paris-Saclay, INRAE, AgroParisTech, Paris Saclay Applied Economics, Palaiseau, France

Discussant: Megan Lang (World Bank)

This study examines how recurring droughts impact farm size and land concentration in France, using detailed panel data from 1970 to 2020 across 715 small agricultural regions. We analyze multiple land concentration metrics, including average and median farm size, the Gini index, and the Herfindahl-Hirschman Index (HHI), to assess structural changes in landholding patterns. To quantify drought exposure, we employ both absolute Soil Wetness Index (SWI) and relative (z-score) measures of soil moisture, capturing variations in drought frequency and intensity over different time horizons (one year, two years, and five years). Our results show that an additional month of severe drought increases average and median farm size by approximately 2 hectares in the short term, with a smaller but persistent effect over five years. We identify two key mechanisms driving land concentration: (i) declining agricultural land prices, which facilitate land acquisitions by larger farms, and (ii) reductions in the number of farmers, as smaller or financially vulnerable farmers exit the sector, accelerating farm concentration. These results highlight the long-term market

and structural consequences of climatic shocks and provide valuable insights for designing climate-resilient agricultural policies aimed at mitigating the risks of land inequality and excessive farm concentration.