Original scientific paper

Seasonal Nitrogen Mineralisation Dynamics in the Soil of a Genisto- Callunetum illyricum Ht. 31 Association on Permanent Plot 84 - the Plitvice Lakes National Park (Croatia)

Nedeljka Šegulja ; Hrvatska
Vladimir Hršak ; Hrvatska

Abstract

Seasonal nitrogen mineralisation dynamics was investigated in the Genisto-Callunetum illyricum Ht. 31. association (permanent plot No. 84). The absence of anthropozoogenic influences on the plot in the period of 35 years caused the accumulation of a great amount of organic material and changed the appearance of the vegetation. The investigation into the seasonal nitrogen mineralisation dynamics in the course of 1989 and 1990 was made by incubation method at the site and in laboratory conditions. Great nitrogen mineralisation variability from term to term in the course of different years of investigation was established. That variability was caused by a higher number of external factors as well as by the variability of the samples. A high nitrification degree (up to 90%), which is usually rare in the heath type vegetation, was most probably caused by a large quantity of organic matter that had accumulated on the plot surface. Nitrogen leaching in humid climate conditions is characteristic of the Plitvice Lakes area, renewed grazing and occasional fires will reduce the mineral nitrogen amount and nitrate percentage to the level that is favourable for heaths.

Keywords

Hrčak ID:

160334

URI

https://hrcak.srce.hr/160334

Publication date:

31.12.1994.

Article data in other languages: croatian

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