Urbanisation and soil sealing
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An important service provided by soils is the support of human settlements, structures and infrastructures. However, once urbanised, soils are usually deeply affected, and often experience the loss of many soil functions, such as the ability to support plant growth and water infiltration, store organic carbon and host biodiversity. The objective of this letter is to draw attention to the issues related to soil sealing and urbanisation, and to provide a brief discussion of what actions need to be taken to prevent excessive loss of soil ecosystem functions and services due to urban development.