Dongying soil with Cd

Oxidation of ammonia to nitrite, the first and rate-limiting step in nitrification, is generally used as an efficient indicator in the ecotoxicology study and risk assessment. Here, we analyzed the effects of cadmium (Cd) treatment on soil potential nitrification rate (PNR), and the abundance of ammonia-oxidizing archaea (AOA) and ammonia-oxidizing bacteria (AOB) communities.