title: Modelling agronomic properties of Technosols constructed with urban wastes.
abstract: The greening of urban and suburban areas requires large amounts of arable earth that is a non-renewable resource. However, concentration of population in cities leads to the production of high amounts of wastes and by-products that are nowadays partly recycled as a resource and quite systematically exported out of urban areas. To preserve natural soil resources, a strategy of waste recycling as fertile substitutes is proposed. Eleven wastes are selected for their environmental harmlessness and their contrasted physico-chemical properties for their potential use in pedological engineering. The aim is (i) to demonstrate the feasibility of the formulation of fertile substrates exclusively with wastes and (ii) to model their physico-chemical properties following various types, number and proportions of constitutive wastes. Twenty-five binary and ternary combinations are tested at different ratios for total carbon, Olsen available phosphorus, cation exchange capacity, water pH, water retention capacity and bulk density. Dose-response curves describe the variation of physico-chemical properties of mixtures depending on the type and ratio of selected wastes. If these mixtures mainly mimic natural soils, some of them present more extreme urban soil features, especially for pH and P(Olsen). The fertility of the new substrates is modelled by multilinear regressions for the main soil properties.
authors.affiliation: Laboratoire Sols et Environnement, Université de Lorraine, UMR 1120, TSA 40602, 54518 Vandœuvre-lès-Nancy Cedex, France; Laboratoire Sols et Environnement, INRA, UMR 1120, TSA 40602, 54518 Vandœuvre-lès-Nancy Cedex, France; Agrocampus Ouest - Centre d'Angers, Unité de Recherche EPHor, LUNAM Université, 49045 Angers Cedex, France.
authors.forename: S
authors.initials: S
authors.lastname: Rokia
authors.affiliation: Laboratoire Sols et Environnement, Université de Lorraine, UMR 1120, TSA 40602, 54518 Vandœuvre-lès-Nancy Cedex, France; Laboratoire Sols et Environnement, INRA, UMR 1120, TSA 40602, 54518 Vandœuvre-lès-Nancy Cedex, France.
authors.forename: G
authors.initials: G
authors.lastname: Séré
authors.affiliation: Laboratoire Sols et Environnement, Université de Lorraine, UMR 1120, TSA 40602, 54518 Vandœuvre-lès-Nancy Cedex, France; Laboratoire Sols et Environnement, INRA, UMR 1120, TSA 40602, 54518 Vandœuvre-lès-Nancy Cedex, France. Electronic address: christophe.schwartz@univ-lorraine.fr.
authors.forename: C
authors.initials: C
authors.lastname: Schwartz
authors.affiliation: Laboratoire Sols et Environnement, Université de Lorraine, UMR 1120, TSA 40602, 54518 Vandœuvre-lès-Nancy Cedex, France; Laboratoire Sols et Environnement, INRA, UMR 1120, TSA 40602, 54518 Vandœuvre-lès-Nancy Cedex, France.
authors.forename: M
authors.initials: M
authors.lastname: Deeb
authors.affiliation: Laboratoire Réactions et Génie des Procédés, CNRS UMR 7274, Université de Lorraine TSA 40602, 54518 Vandœuvre-lès-Nancy Cedex, France.
authors.forename: F
authors.initials: F
authors.lastname: Fournier
authors.affiliation: Chair for Soil Conservation, Technische Universität Berlin, Ernst-Reuter-Platz 1, 10587 Berlin, Germany.
authors.forename: T
authors.initials: T
authors.lastname: Nehls
authors.affiliation: Plante et Cité, 49066 Angers, France.
authors.forename: O
authors.initials: O
authors.lastname: Damas
authors.affiliation: Agrocampus Ouest - Centre d'Angers, Unité de Recherche EPHor, LUNAM Université, 49045 Angers Cedex, France.
authors.forename: L
authors.initials: L
authors.lastname: Vidal-Beaudet
mesh_terms: D002947:Cities; D003247:Conservation of Natural Resources; D008962:Models, Theoretical; D059027:Recycling / Q000379:methods*; D012987:Soil / Q000737:chemistry*; D018505:Waste Management
chemical_list: D012987:Soil
keywords: Agronomic properties; Constructed Technosol; Dose–response curves; Pedological engineering; Urban vegetation; Wastes formulation