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Impact of city historical management on soil organic carbon stocks in Paris (France)

Abstract : Purpose Assessments of urban soil organic carbon stock (SOCS) are scant because citywide data are scarce. Moreover, we do not know which factors mostly explain SOCS spatial and temporal variations in urban open soils. Methods To fill these knowledge gaps, the present study focused on Paris (France): two periods (1993-2007 and 2008-2016) were compared to better understand SOCS changes at 0-30 cm depth. The effects of anthropic factors (land use, management intensity, cover type, site age and size, city district, and indirectly, resource material used for the site establishment) and soil properties (e.g., soil nutrient contents) on SOCS were studied over the more recent period (2008-2016) on 810 soil samples. Results The changes in green space management methods between both periods resulted in an additional storage of + 43.5 Gg SOC in Paris open soils in 2008-2016 compared to 1993-2007. During 2008-2016, SOCS was still influenced by city history and particularly by the type of resource material used for landscaping, which has changed since the 1950s. SOCS differed significantly among city districts, which represent a combination of all studied anthropic factors: each district has its own history (i.e., soil resource material, green space age), specific number and size of green spaces, current management methods, and plant cover types. Paris green space SOCS was also influenced by soil nitrogen, sand, and magnesium contents as well as pH. Conclusions Modifications of local landscape management methods are a main driver of SOCS changes. Moreover, citywide SOCS distribution tends to depend on city history.
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Contributor : Catherine Cliquet Connect in order to contact the contributor
Submitted on : Monday, February 8, 2021 - 4:18:35 PM
Last modification on : Friday, May 20, 2022 - 9:04:09 AM



Aurélie Cambou, Nicolas P.A. Saby, Gilles Hunault, François Nold, Patrice Cannavo, et al.. Impact of city historical management on soil organic carbon stocks in Paris (France). Journal of Soils and Sediments, Springer Verlag, 2021, 21 (2), pp.1038-1052. ⟨10.1007/s11368-020-02869-9⟩. ⟨hal-03134995⟩



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