[Heavy metals in soil. Evaluation of bio-availability and of effects on microbial biomass [laboratory and field experiments - Emilia-Romagna - amended soils - sludge - compost]]

acque reflue aguas residuales amendement du sol analisi del terreno analyse de sol application rates bioavailability biodisponibilidad biologia del suolo biologie du sol biomasa biomass biomassa biomasse carbon carbone carbonio carbono cinc compost composts dose d'application dosi di applicazione emilia romagna engrais organique enmiendas del suelo evaluation fertilisation fertilizer application fertilizzanti organici field experimentation flora microbiana flora microbica flore microbienne laboratory experimentation lead microbial flora organic fertilizers piombo plomb plomo procesos de transporte en el suelo processi di trasporto nel suolo soil amendments soil biology soil testing soil toxicity soil transport processes sostanze tossiche substance toxique talio tallio thallium toxic substances toxicidad del suelo transport dans le sol valutazione wastewater zinc zinco