Are Mechanical and Biological Techniques Efficient in Restoring Soil and Associated Biodiversity in a Brownfield Site?

Brownfield technosol restoration represents a real opportunity to minimize land consumption, but it often requires intensive intervention and reconstruction, leading soil donor site destruction potential pollution. Using former oil refinery brownfield site, this research compares the short-term (one year) impact of localized methods, including surface scarification, organic matter addition, earthworm inoculation (locally commercially sourced), on fauna vegetation properties. Vegetation rapidly covered bare soil, few significant impacts were observed in terms or structure. The initial positive scarification compaction quickly faded inoculations did not seem characteristics. Natural colonization by was major driver modification. analysis an intermediate reference showed delay multiple decades between vegetation, density, structure improvement, as well achievement “good biological quality”. We conclude that use engineer species its actual form is early step should be tested later steps (e.g., when content sufficient). However, additional needed selection multi-compartment approaches. A better understanding natural stages also essential for techniques’ improvement.