Maintenance of soil health through biochemical processes under anthropogenic contamination

Evaluate the effect of different intensity contamination by sewage sludge as a primary source of microplastics on soil health and how it could affect the C sequestration by changing its biogeochemical cycle Tasks: Evaluate microplastic concentration in different agricultural soils (forest or perennial grass as a control); soil affected by different anthropogenic contamination (fertilization with different doses of sewage sludge). Quality and quantity of microplastics; Physical interactions between microplastics and soil aggregates; Chemometric discrimination of soil health by changes detected in measured chemical compounds content. Study of impacts of microplastics on SOC properties and possible changes of the carbon cycle. Relation between soil organic carbon fractions and microplastics fractions (size); DOC fingerprint characterization in lysimetric water, nutrients fraction composition determination (?).