Rijeka Krka sa svojim pritocima čini sustav kompozitnih dolina u kršu. Kompozitnost dolina posljedica je litoloških i tektonskih odnosa. Dolina Krke poligenetskog je postanka. Za kanjonske dijelove karakteristična je pojava brojnih padinskih reljefnih detalja. Na strmijim padinama izrazito je osipanje i urušavanje. U aluvijalnim nanosima u dolinskim proširenjima nađeni su fragmenti kršja okolnih stijena. U novije doba uočava se regeneracija vegetacije koja pridonosi promjeni intenziteta modeliranja reljefa egzogenim procesima.Ključne riječi: Rijeka Krka, geomorfološka obilježja, padinski procesi, antropogeni i zoogeni utjecajiThe Krka River and its tributaries make the system of composite valleys in the karst. The composite valley system is the result of lithologic and tectonic relations. The Krka valley is of polygenetic origin. In the canyon sections there are many characteristic slope relief details. On steeper slopes crumbling and collapsing is significant. The debris of surrounding rocks is found in alluvial deposits at the valley widening. In recent times, the regeneration of vegetation is noticeable, which contributes to decreasing intensity of relief shaping by exogenic processes.Key words: Krka River, geomorphologic features, slope processes, anthropogenic and zoogenic influences UvodJedan od najvećih problema Južne Hrvatske je nedostatak vode. Prevlast karbonatnih stijena i njihova tektonska razlomljenost pospješuju poniranje atmosferske vode u podzemlje, dok krajobrazom dominira krš. Upravo stoga pojava vode na površini ima veliko značenje. Kao posljedica kompleksnih međuodnosa litološkog sastava, tektonike, hidroloških značajki i egzogenih procesa u morfološkom smislu u poriječju Krke mogu se izdvojiti tri dijela: planinsko područje na sjeveroistočnom dijelu, dolinska

This paper presents the fi rst comprehensive nationwide trend detection of mean discharges in Croatia. Over the last 30 years, global climate change has manifested itself largely in the rise of the average annual temperature, which has resulted in the changes of evapotranspiration and precipitation patterns. The consequences of those changes have been varied spatial impacts on river discharge (fl ow). We analysed the changes in mean river discharges in Croatia at 53 gauging hydrological stations over the most recent period from 1990 to 2009. To assess the trend, the Kendall-Theil (Sen) non-parametric trend test was carried out for the yearly and seasonal mean discharge values. We found evidence of redistribution of discharge throughout the year, an increase in autumn and winter discharges (especially on the rivers dominantly fed by snowmelt) and a decrease in summer discharge values. Furthermore, we detected a change in the month of the appearance of mean discharge maxima and minima. In most cases the changes can be explained by the changes in the regime of climate elements (temperature, precipitation, evapotranspiration) although that information should be treated with care because of the shortness of the time-series. The results are consistent with the ones from the upstream countries, i.e. Slovenia and Austria.Key words: discharge, trends, Croatia, rivers, hydrology, geography Novije promjene srednjih godišnjih i sezonskih protoka rijeka u Hrvatskoj U radu se iznose rezultati prve sveobuhvatne analize suvremenih promjena srednjih mjesečnih protoka rijeka u Hrvatskoj. U posljednjih tridesetak godina globalne promjene klime uglavnom se očituju kroz porast srednje godišnje temperature zraka, što za posljedicu ima promjene u prostornoj i vremenskoj distribuciji padalina i vrijednosti evapotranspiracije. Te promjene imaju različite prostorne posljedice na protoke i protočne (riječne) režime rijeka. U ovom istraživanju analizirane su promjene srednjih protoka rijeka u Hrvatskoj na 53 hidrološke stanice od 1990. do 2009. Za analizu trenda na godiš-njoj i sezonskoj razini upotrijebljen je Kendall-Theilov (odnosno Senov) test. Utvrđeno je postojanje preraspodjele protoka unutar godine, povećanje jesenskih i zimskih srednjih protoka (osobito na rijekama sa značajnijim udjelom sniježnice) i smanjenje ljetnih protoka. Uočene su i promjene u mjesecu javljanja maksimuma i minimum srednjih protoka, koje se u većini slučajeva mogu objasniti promjenama u režimu klimatskih elemenata (temperature, padalina i evapotranspiracije) iako rezultate treba uzimati s dozom opreza zbog kratkoće analiziranog niza. Rezultati istraživanja uglavnom se poklapaju s rezultatima sličnih istraživanja u nama uzvodnim zemljama (Slovenija i Austrija).

HRVATSKI GEOGRAFSKI GLASNIK 67/1, 45 -62 (2005.) The papers deals with hidrography of the Upper Jazirah region in north-eastern Syria, particularly with the changes in the mean and annual runoff of the Khabour River and its tributaries in 1943-2001 period. The upper part of the Khabour catchment area is an important Syrian cotton and wheat production area. The use of ground-water and river-water in agriculture, especially since 1970's lead to significant lowering of the annual runoff of the Khabour and other rivers in the area.Key words: Syria, Khabour cathment area, annual runoff UVODSirija je zemlja heterogenih prirodnih obilježja i složenog društveno-gospodarskog razvitka. Pa ipak, s obzirom na njen geografski položaj i iz njega proizašlu činjenicu da najveći dio zemlje ima polupustinjska obilježja, kao jedan od najvažnijih, zapravo razvojno ograničavajućih čimbenika, javlja se voda u svim svojim pojavnim oblicima.

This paper presents the results of the first comprehensive national analysis of changes in discharge regimes of rivers in Croatia. Seven types of discharge regimes have been defined for rivers in Croatia. We analyzed the changes in discharge regimes of all types, comparing the standard period from 1961 to 1990 with the most recent period from 1990 to 2009. We found evidence of a redistribution of discharge throughout the year, an increase in autumn and winter discharges (especially for rivers dominantly fed by snowmelt), and a decrease in summer discharge values. Furthermore, we detected a change in the month of the appearance of mean discharge maxima and minima. In most cases, the changes can be explained by changes in the regime of climate elements (temperature, precipitation, and evapotranspiration). The results are consistent with those from upstream countries; that is, Slovenia, Austria, and Bosnia and Herzegovina.

UDC 911.3:656 (497.5) 656 (497.5) Pregledni članak ReviewThis paper covers Croatia's transport position in the context of pan-European tranport corridors. National transport policy priorities, the main transit routes in Croatia and their compatibility with the needs of pan-European links are all considered. The basic features of Croatia's transport system and its compatibility with the development of different traffi c modes are analyzed. The signifi cance of the potential Adriatic-Ionian transport corridor is considered in the end.