Spalanie pozostałości pozrębowych a nagrzewanie się gleby

The work presents results of soil temperature measurements under bonfires in which felling residues (branches, twigs, needles) were burnt in a clear−cut area. An increase in soil temperature was observed to the depth of 50 cm below ground level. In the humus horizon, the temperature greatly exceeded the threshold value above which protein denaturation takes place. The ectohumus horizon, with a high water content, initially protected the mineral soil against an increase in temperature and later retarded this increase.