Croatia proper is a historical region of
Croatia that encompasses territory around
Zagreb, located between
Slavonia in the east and the
Adriatic Sea in the west. Its exact borders are determined ambiguously, and the extent of the region is defined differently by various sources. The border with Slavonia to the east was variously defined throughout history, depending on the political divisions of Croatia. Modern-day Croatian sources often discuss different kinds of regional division of Croatia, where the historical region of Croatia proper is not typically used, and instead its territory is variously classified under Pannonian Croatia (), Central Croatia (), Mountainous Croatia (), Zagreb macroregion (), Rijeka macroregion (). Croatia proper roughly corresponds to the area of Zagreb and ten
Croatian counties:
Bjelovar-Bilogora,
Karlovac,
Koprivnica-Križevci,
Krapina-Zagorje,
Lika-Senj,
Međimurje,
Primorje-Gorski Kotar,
Sisak-Moslavina,
Varaždin, and
Zagreb County. In the
NUTS-2 statistical classification, Međimurje County, Varaždin County, Koprivnica-Križevci County, Krapina-Zagorje County, and Zagreb County make up
Northern Croatia, Primorje-Gorski Kotar and Lika-Senj counties are part of
Adriatic Croatia, while Bjelovar-Bilogora, Karlovac and Sisak-Moslavina counties are part of the
Pannonian Croatia. The ten counties and Zagreb cover of land, corresponding to 50% of the territory of Croatia, and have a population of 2,418,214 yielding a population density of . Croatia proper comprises several smaller historical regions of its own: the
Croatian Littoral,
Lika,
Gorski Kotar,
Zagorje,
Međimurje,
Podravina,
Posavina,
Kordun,
Banovina,
Prigorje,
Turopolje,
Moslavina, and
Žumberak. The sociogeographical distinction between Central Croatia, the Croatian Littoral and Mountainous Croatia has become more pronounced over time, as the western, mountainous areas of Lika and Gorski Kotar suffered from population depletion during the 20th century, especially during
World War II and the
Croatian War of Independence. The 2001 census indicated a large proportion of elderly, when 31.5% of population of Lika was over 60 years of age. The boundary runs from the Žumberak range to the Banovina area, along the
Sava River. The Dinaric Alps are linked to a
fold and thrust belt active from the Late
Jurassic to recent times, and is itself part of the
Alpine orogeny that extends southeast from the southern
Alps.
Karst topography is especially prominent in the Dinaric Alps. The Pannonian Basin took shape through
Miocenian thinning and
subsidence of crust structures formed during the Late
Paleozoic Variscan orogeny. Paleozoic and
Mesozoic structures are visible in
Papuk and other Slavonian mountains. The processes also led to the formation of a
stratovolcanic chain in the basin 12–17
Mya; intensified subsidence was observed until 5 Mya as well as
flood basalts at about 7.5 Mya. The contemporary
tectonic uplift of the
Carpathian Mountains cut off the flow of water to the
Black Sea, and the
Pannonian Sea formed in the basin.
Sediments were transported to the basin from the uplifting Carpathian and Dinaric mountains, with particularly deep
fluvial sediments being deposited in the
Pleistocene epoch during the formation of the
Transdanubian Mountains. Ultimately up to of sediment was deposited in the basin, and the sea eventually drained through the
Iron Gate gorge. The result is large plains, particularly in river valleys, and especially along the Sava,
Drava, and
Kupa rivers. The plains are interspersed with
horst and
graben structures, believed to have broken the Pannonian Sea's surface as
islands. The tallest among these landforms are
Ivanščica and
Medvednica, north of
Zagreb. , south of
Varaždin The region is a part of the
Dinaric Alps, linked to a Late
Jurassic to recent times
fold and thrust belt, itself part of the
Alpine orogeny, extending southeast from the southern
Alps. Karst topography makes up about
half of Croatia and is especially prominent in the Dinaric Alps and in turn, the Mountainous Croatia. The longest cave in Croatia and in the entire Dinaric Alps,
Kita Gaćešina, is located in southern Velebit area of the Mountainous Croatia.
Hydrology and climate —a
World Heritage Site River waterfalls in
Rastoke The vast majority of the region is encompassed by the Black Sea
drainage basin. The area includes all the largest rivers flowing in the country—Sava, Drava,
Mura, and Kupa—except the
Danube. The largest lakes in Croatia proper are
Lake Dubrava and
Lake Varaždin reservoirs, both near
Varaždin, through which the Drava River flows. The finest examples of the interaction of watercourses and karst are the
Plitvice Lakes, listed as a
UNESCO World Heritage Site, and
Rastoke, to the north of the Plitvice Lakes.
Lika and
Gorski Kotar are marked by several significant rivers draining north towards the Pannonian Basin. Those are the
Kupa, tracing the northern boundary of the region,
Dobra,
Mrežnica and the
Korana—forming
travertine barriers and waterfalls before discharging into Kupa in area of
Karlovac, as well as
Una, in the eastern part of the region, at the border of Bosnia and Herzegovina. Furthermore, there are
losing streams such as
Gacka,
Krbava and
Lika rivers, reflecting a high degree of karstification of the terrain in the region, resulting in increased permeability of soil and rocks. Ingress of water underground resulted in formation of subterranean watercourses and lakes. Probably the finest example of interaction of karst terrain and watercourses in the area are
Plitvice Lakes—16 interlinked lakes between Mala Kapela and Plješevica, through which Korana River flows. The area is abundant in travertine barriers, waterfalls and caves of biological origin—created through deposition of
calcium carbonate through agency of moss, algae and aquatic bacteria. The Plitvice Lakes are listed as a
UNESCO World Heritage Site, Croatia proper has a moderately warm and rainy
continental climate (Dfb) as defined by the
Köppen climate classification. Mean monthly temperatures range between (in January) and (in July). Temperature peaks are pronounced in the region compared to parts of Croatia closer to the
Adriatic Sea, because of the absence of its moderating effect. The lowest temperature of was recorded on 3 February 1919 in
Čakovec, and the highest temperature of was recorded on 5 July 1950 in
Karlovac. File:Zagreb center areal.jpg|
Zagreb File:Rijeka-aerial-zraka.jpg|
Rijeka File:Karlovačka zvijezda- Izvor- Digitalni Tisak.jpg|
Karlovac File:Z-2611 Gradska vijećnica,Varaždin -1.jpg|
Varaždin == Economy ==