http://vocab.lternet.edu/vocab/vocab/http://vocab.lternet.edu/vocab/vocab/skos/375nitrogen cycling http://vocab.lternet.edu/vocab/vocab/skos/375 nutrient cycles RT http://vocab.lternet.edu/vocab/vocab/skos/375 denitrification NT http://vocab.lternet.edu/vocab/vocab/skos/375 nitrification NT http://vocab.lternet.edu/vocab/vocab/skos/375 nitrogen fixation NT http://vocab.lternet.edu/vocab/vocab/skos/375 nitrogen mineralization NT http://vocab.lternet.edu/vocab/vocab/skos/375 nutrient cycling BT