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Impact of nature-based solution on urban soil quality in different urban areas of Europe

Abstract : Improving soil management in the urban area required to modify soil use policy. Urban planning requires prior knowledge of soil quality, generally acquired through a set of diagnostics (geotechnics and analysis). The capitalization of these data, often collected and exploited by different actors, is a major stake in a logical implementation of a consistent, reasoned and sustainable use of the soil for planning purposes. Optimized management of urban soil (US) involves the use of specific techniques and tools adapted to the urban context (compilation into databases, interpretation of data and taking into account uncertainties). It is crucial to sustain the information in a usable format and make it available and accessible. Nowadays, the use of innovative procedures will help to promote the social acceptability of soil challenge by the city users. Nature-based solutions (NBS) can be defined as the use of nature in tackling urban challenges and conserve biodiversity in a sustainable manner. NBS may support to reform the approach of urban planning in EU countries. NBS are a new way to deliver multiple environmental, social and economic benefits especially for in urban space management and biodiversity through proposing and implementing a new toolkit based on natural resources. In the Horizon 2020 project, Nature4Cities besides multi-thematic and multi-scalar evaluation of all the naturebased solutions and their capability in addressing different urban challenges on a platform used by urban planners. Our work aimed at showing the relations between the fertility and quality of USs and the provided ecosystem services (regulation, provisioning, and habitat). Theses relations were assessed for all NBSs listed in the project. It was based on an analysis of the NBS performance using physical, chemical and biological indicators. We identified 21 candidate indicators relating to environmental issues, covering seven soil threats: erosion; organic matter decline; compaction; contamination; sealing; biodiversity and land use. The selected indicators were linked to threshold values and baselines and were tested on in situ experimental platforms in three cities in Europe under various climates (Alcala de Henares, Spain; Milan, Italy and Szeged, Hungary). The outcome is a set of proposals and recommendations for reference values for the selected indicators. The objective is to define new threshold values adapted to urban context.
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Submitted on : Monday, April 27, 2020 - 6:28:11 PM
Last modification on : Monday, August 31, 2020 - 2:20:06 PM

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  • HAL Id : hal-02556123, version 1

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Ryad Bouzouidja, Béatrice Bechet, Patrice Cannavo, Thierry Lebeau, Véronique Beaujouan, et al.. Impact of nature-based solution on urban soil quality in different urban areas of Europe. 21st World Congress of Soil Science, International Union of Sol Science, Aug 2018, Rio de Janeiro, Brazil. ⟨hal-02556123⟩

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