Urban soil fertility skyrockets after de-sealing, boosting plant growth and biodiversity.
Urban soil in Naples, Italy, became more fertile after being de-sealed during construction and colonized by plants. De-sealing improved soil quality by reducing density and increasing nutrients, microbial activity, and enzyme levels. The soil showed higher fertility compared to nearby arable land. De-sealed urban soils can quickly improve without human intervention, especially when plants grow on them.