In Slovenia, 43% of the territory is karst, including 42% of all protected water sources and 53% of all water-protection areas in the country. Assessment of karst areas and their spatial distribution is essential to better understanding the water in the lithosphere and for the assessment of the hydrogeochemical properties of the groundwater in a large part of Slovenia, as these resources are susceptible to degradation or pollution. For the purpose of development of regional karstification-intensity map a classification of stratigraphic units into karstification-level classes was performed, three parameters were analyzed in the outcrops of units with carbonate content using GIS and simple spatial statistics: the presences of sinks and cave entrances and the absence of a surficial drainage network. Where at least two of the three parameters showed a positive relation with karstification, the unit containing carbonate rocks was regarded as intensely karstified, while the rest were regarded as less karstified. The former areas cover 24% and the latter 21% of Slovenian territory.
COBISS.SI-ID: 0000000
In the search for new technologies that would ensure optimum yield and environmental sustainability, various irrigation, nitrogen and cropping system management strategies for the production of vegetables were assessed at a benchmark site in Slovenia (Sneberje) for the years 2006 and 2007. In the studied years four irrigation and fertilization treatments were applied. Nitrogen isotope labelled fertilizer (15N) was applied to trace the movement of the applied N fertiliser. The results confirm that fertigation and improved irrigation scheduling can be an effective way of minimizing nitrate leaching, and should be considered for vegetable production in or close to groundwater protection zones.
COBISS.SI-ID: 6820217
Field experiments can serve as a base for modelling or for verification and calibration of the model. Mathematical models enable smaller amount of measurements in a certain area by means of measurements carried out only in characteristic points. Field experiments are very often very time and physical work demanding, so they have to be planned carefully and complex enough to be of cost benefit for researches. Combination of on site measurements and mathematical modelling proved to be an efficient method for understanding of processes in nature.
COBISS.SI-ID: 6061945