The human factor of pedogenesis described by historical trajectories of land use: The case of Paris

Characterizing the physico-chemical properties of urban soils on a large scale remains significant challenge. The heterogeneity and difficulty access to these lead very localized studies that are difficult transfer whole area. This is mainly explained by human factor in formation evolution soils, which major contributor pedogenesis cities. Throughout their evolution, undergo contrasting activities modify thus determine historical trajectories land use. this seems be an essential condition for better understanding functioning qualifying them scale. aim work describe analysis evaluation impacts soil properties. . We focus conurbation Paris over last 70 years. different were identified thanks database provided local use inventory. Results show 80% total surface area affected 21 trajectories. More than 60% characterized single showing most has not changed urbanisation agricultural land, leading residential areas representative trajectory described paper transforms original into Technosols.