Nišava-potamološka studija
Докторанд
Đokić, Mrđan M.Ментор
Živković, NenadЧланови комисије
Gavrilović, LjiljanaRadivojević, Aleksandar
Ivanović, Radomir
Метаподаци
Приказ свих података о дисертацијиСажетак
The Nišava River Basin is very multiform and specific as
in geographical, so as in hydrological terms, which is
conditioned by its particular location on the contact of the
Serbian-Macedonian Mass and the Carpatho-Balkan Mountains,
extremely complex geological structure and tectonics, diverse
climatic conditions.
The main objective of this paper is to analyse the
hydrological conditions in the Nišava River Basin, that is, the
factors that affect the formation of waters. This was achieved
through determination of the degree of influence of certain
physical-geographical factors on the type of spring, way of
precipitation runoff and water regime of the Nišava River and its
tributaries. The aim was also to determine trends of changes in
the value of the climate elements that had a crucial impact on the
discharge formation in watercourses - temperature and
precipitation, as well as to determine the probability of
occurrence of the characteristical water levels and discharges for
better wate...r management planning and water use. One of the
main objectives was to determine the probability of occurrence
of extreme discharges in order to prevent flooding and droughts,
as well as the level of anthropogenic impacts on the discharges
of certain parts of the Nišava River Basin, both in quantitative
terms, but also in time and space discharge distribution.
The paper applied mostly the cartographical, graphical,
and above all, mathematical and statistical methods. It was found
that the dissection and complexity of the relief forms in the basin
conditioned a huge distinction in the exposition and elevation of
the terrain, which were the two main factors that had a strong
impact on the discharge formation. The exsistance of a trend of
increase in annual air temperatures was determined, especially
during the summer months, which negatively reflected on the
discharge. Also, a trend of decrease in precipitation amount in
the basin was determined. As a consequence, the trend of
decrease in discharge was found. The distinctive anthropogenic
impacts on the formation and runoff of the watercourses in the
Nišava River Basin were established, which reflected through
water taking from the riverbed from one and transferring to the
riverbeds of the other watercourses which were located both in
the Nišava River Basin and also out of it, through water supply
of the numerous inhabitants and industies, uncontrolled and
unregulated unregulated agricultural irrigation, which might lead
to decrease in the water amount in the riverbed, especially during
the periods of droughts as well as with the associated problems.