Expression inventée sur le modèle de la Trame Verte et Bleue, appliquée à la continuité écologique des sols. Largement ignorés pendant de nombreuses années, ces derniers sont pourtant essentiels au fonctionnement des écosystèmes. Ce terme désigne le réseau écologique en profondeur, à préserver et restaurer.
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Quantity of water that the soil can hold and return immediately to the roots of plants. It is expressed in millimeters (mm).
The extractable soil water (RU) is the fraction of the soil water reserve available to the plant, or that which can be extracted by the plant through root suction. It is expressed in millimetres of water.
All treatment processes that remove wastewater from an individual single-family home usually on the plot on which the house is built, without any wastewater conveyance. An extension (rarer) concerns the wastewater treatment of some neighbouring houses on private land. It is still on-site sanitation but it is regrouped. On the contrary, a group having a small collecting system and a treatment facility (spreading, filters, etc.) on community land is considered community sanitation. On-site sanitation is first defined as opposed to community sanitation.
A sanitation process including a public system for wastewater collecting and conveyance to a treatment plant.
Municipal urban planning document, created by the Law on Urban Solidarity and Renewal (SRU) of 13 December 2000 and replacing the land use plan, the local urbanisation plan (PLU) sets out rules for land use. It may also include operational urban planning projects such as the development of existing or new urban districts, public spaces or city entrances, etc. The PLUs must be compatible or made compatible, within three years, with the basic guidelines for sound water resources management and with the water quality and quantity objectives defined by the