Fixation of Ammonia (N15) to Pinus silvestris Needle Litter in Different Stages of Decompositon

1988

2 Abb., 4 Tab., 24 Lit. Ang.

Unselbständiges Werk

12244

200022596

The chemical fixation of N15-ammonia by partly decomposedScots pine needle litter was studied. The material had been extraced with wate r using ultra- sound treatment. This treatment, together with the addition of HgCl2, had killed microorganisms and prevented microbial activity. Fixation of N15- ammonia decreased with increasing accumulated mass loss and was inversely proportional to concentrations of sulfuric-acid lignin as well as to concentrations of total nitrogen.