The perimeter studied is part of the Suncuius refractory clay deposit. The mining activity led to profound changes in the relief in the area, resulting in geomechanical changes (landslides, subsidence), qualitative and quantitative changes in water, changes in pedological, agrochemical and biological. In order to establish the features of the studied waste dumps, we sampled soil to be analysed in laboratory conditions with specific methods. We then analysed the soil samples from the point of view of their pH, humus content, total nitrogen, phosphorus, and potassium. The existing natural flora on the surfaces that were affected by the mining activities was completely destroyed. On these surfaces a new vegetation was installed for the most part, but in a different structure from the initial one. The investigated dumps are at the beginning of the colonization period with edaphic organisms and therefore we consider that, in the conditions of a natural evolution, the process of installing the biota with a decisive role in the incipient phases of pedogenesis, is a very long one. In the ecological reconstruction strategy it is important to know the factors making up the climate by comparing the specific features of the area and the different ways they have been influenced

degraded lands, mining activity, ecopedological conditions, vegetation

environmental engineering

Presentation: None