Avtor/Urednik		Zupančič, Maja; Mahne, Ivan
Naslov		Vpliv dejavnikov okolja na kapaciteto za mineralizacijo ogljika in dušika v barjanskih tleh
Prevedeni naslov		Effect of environmental factors on the capacity for carbon and nitrogen mineralization in peat soil
Tip		članek
Vir		In: Bole-Hribovšek V, Ocepek M, Klun N, editors. Zbornik s programom 2. kongres slovenskih mikrobiologov z mednarodno udeležbo; 1998 sep 27-30; Portorož. Ljubljana: Slovensko mikrobiološko društvo,
Leto izdaje		1998
Obseg		str. 209-12
Jezik		slo
Abstrakt		Intensive agricultural use of peat soil accelerates mineralization processes and results in decrease of the soil surface level. Effects of key environmental factors: soil pH, oxygen and mineral nutrients on the mineralization capacity of uncultivated peat soil were studied under laboratory conditions. CO2 production and changes in 2N KC1 exchangeable mineral N content in soil samples during 42 or 92 days of incubation at room temperature were used to evaluate mineralization potential. Elimination of acidity higly increases mineralization of organic matter in the presence of oxygen. Up to 12,70 mg C/g dry soil is mineralized in 4 days as compared to 0,62 mg C/g in the samples with preserved acidity (pH 4). Later on mineraliation rate decreases and additional 10,95 mg C/g is mineralized after 92 days. Neutralization of acidity enhance mineralization rate also in anaerobic conditions: after 42 days the amount of net mineralized N is up to 945,0 micro g/g dry soil as compared to 245,1 micro g/g in the control soil with preserved natural acidity.
Deskriptorji		SOIL POLLUTANTS AGRICULTURE CARBON NITROGEN AGROCHEMICALS