We lose ground: Global assessment of land subsidence impact extent

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Title: We lose ground: Global assessment of land subsidence impact extent
Authors: Dinar, Ariel | Esteban, Encarna | Calvo, Elena | Herrera García, Gerardo | Teatini, Pietro | Tomás, Roberto | Li, Yang | Ezquerro Martín, Pablo | Albiac, Jose
Research Group/s: Ingeniería del Terreno y sus Estructuras (InTerEs)
Center, Department or Service: Universidad de Alicante. Departamento de Ingeniería Civil
Keywords: Aquifer overdraft | Water scarcity | Groundwater pumping regulations | Impacts | Policy effectiveness | Land subsidence extent index | Delphi technique
Knowledge Area: Ingeniería del Terreno
Issue Date: 29-Apr-2021
Publisher: Elsevier
Citation: Science of The Total Environment. 2021, 786: 147415. https://doi.org/10.1016/j.scitotenv.2021.147415
Abstract: Depletion of groundwater aquifers along with all of the associated quality and quantity problems which affect profitability of direct agricultural and urban users and linked groundwater-ecosystems have been recognized globally. During recent years, attention has been devoted to land subsidence—the loss of land elevation that occurs in areas with certain geological characteristics associated with aquifer exploitation. Despite the large socioeconomic impacts of land subsidence most of these effects are still not well analyzed and not properly recognized and quantified globally. In this paper we developed a land subsidence impact extent (LSIE) index that is based on 10 land subsidence attributes, and applied it to 113 sites located around the world with reported land subsidence effects. We used statistical means to map physical, human, and policy variables to the regions affected by land subsidence and quantified their impact on the index. Our main findings suggest that LSIE increases between 0.1 and 6.5% by changes in natural processes, regulatory policy interventions, and groundwater usage, while holding all other variables unchanged. Effectiveness of regulatory policy interventions vary depending on the lithology of the aquifer system, in particular its stiffness. Our findings suggest also that developing countries are more prone to land subsidence due to lower performance of their existing water governance and institutions.
Sponsor: Partial funding was provided by the Giannini Foundation of Agricultural Economics Minigrant Program. Dinar would like to acknowledge support from the W4190 Multistate NIFA-USDA-funded Project, “Management and Policy Challenges in a Water-Scarce World.” Esteban, Calvo, and Albiac would like to acknowledge support from the project INIA RTA2017-00082-00-00 by the Spanish Ministry of Science and Innovation, and support by funding to the research group ECONATURA from the Government of Aragon. Tomás would like to acknowledge support from the Spanish Ministry of Economy and Competitiveness, the State Agency of Research and the European Funds for Regional Development under project TEC2017-85244-C2-1-P. Tomás, Herrera, Ezquerro, and Teatini acknowledge the European Union support from the RESERVOIR project (GA nº 1924) developed in the framework of the PRIMA program.
URI: http://hdl.handle.net/10045/114700
ISSN: 0048-9697 (Print) | 1879-1026 (Online)
DOI: 10.1016/j.scitotenv.2021.147415
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2021 Elsevier B.V.
Peer Review: si
Publisher version: https://doi.org/10.1016/j.scitotenv.2021.147415
Appears in Collections:INV - INTERES - Artículos de Revistas

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