On the Pannonian plain to the east and northeast, toward the Croatian and Hungarian borders, the landscape is essentially flat. However, the majority of Slovenian terrain is hilly or mountainous, with around 90% of the surface 200 meters or more above sea level.
Location
Slovenia's location is where southeastern and Central Europe meet, where the Eastern Alps border the Adriatic Sea between Austria and Croatia. The 15th meridian east almost corresponds to the middle line of the country in the direction west–east.[1]
Since 2016, the geodetic system of Slovenia with the elevation benchmark of 0 m has its origin at the Koper tide gauge station. Until then, it referred to the Sartorio mole in Trieste (see metres above the Adriatic).[2]
The last two are usually considered together as the Littoral Region (Primorska). White Carniola (Bela krajina), otherwise part of Lower Carniola, is usually considered a separate region, as is the Central Sava Valley (Zasavje), which is otherwise a part of Upper and Lower Carniola and Styria.
Slovenian Littoral has no natural island, but there is a plan on building an artificial one.
Climate
Humid subtropical climate (Cfa) on the coast, oceanic climate (Cfb) in most of Slovenia, continental climate with mild to hot summers and cold winters (Dfb) in the plateaus and mountains on the north, subpolar (Dfc) and tundra (ET) climate above the treeline on the highest mountain peaks. Precipitation is high away from the coast, with the spring being particularly prone to rainfall. Slovenia's Alps have frequent snowfalls during the winter.[4][5]
Central Slovenia is largely hilly and forested, with the exception of the Ljubljana Basin and the encompassed Ljubljana Marsh, a large wetlands region which was largely drained in the time of the Habsburg monarchy, but still remains a flood zone.
To the southeast of the Ljubljana Basin lies the Karst plateau, a hilly region containing various caves, sinkholes, intermittent lakes and other features of Karst topography.
There is only one natural island in Slovenia: Bled Island in Lake Bled in the country's northwest. Lake Bled and Bled Island are Slovenia's most popular tourist destination.[10]
Highest point: Triglav 2,864 m (9,396 ft), located in the Julian Alps
Natural resources
More than half of Slovenia, which is 11,823 km2 or 4,565 sq mi, is forested;[11] ranking it third in Europe, by percentage of area forested, after Finland and Sweden. The areas are covered mostly by beech, fir-beech and beech-oak forests and have a relatively high production capacity.[12] Remnants of primeval forests are still to be found, the largest in the Kočevje area. Grassland covers 5,593 km2 (2,159 sq mi) and fields and gardens (954 km2 or 368 sq mi). There are 363 km2 (140 sq mi) of orchards and 216 km2 (83 sq mi) of vineyards.
Slovenia's terrain and abundance of rivers makes it ideal for hydropower, which is responsible for around a third of the country's electricity production.
Various building stones, most notably marble and limestone have been quarried in the country for centuries. The Podpeč quarry has been used to extract marble since the Roman times.[13]
Mining
Slovenia is not known for large mining operations, but still has some notable deposits:
Lignite coal is found primarily in the northeastern part of the country. The country has been extracting this resource for power generation, most notably for use in the Šoštanj Power Plant, however it does not produce enough lignite to be self-sufficient and still largely relies on imports.[14] In 2022, Slovenia produced 2.4 million tonnes of lignite.[15]
The country has deposits of heavy metals, primarily Mercury, Lead and Zinc. Mercury was historically mined in the town of Idrija, which is one of the rare regions in the world where it appears both in its elemental form and as cinnabar ore. Lead and Zinc were mined in the Mežica mine. Both have since closed and have been converted into tourist attractions.
Uranium was also discovered near Žirovski Vrh in the 1960s and a mine operated for a short time, but falling Uranium prices made the mine close in 1990 after only 8 years of operation.[16]
The Sava River polluted with domestic and industrial waste; pollution of coastal waters with heavy metals and toxic chemicals; forest damage near Koper from air pollution (originating at metallurgical and chemical plants) and resulting acid rain.
^Jenko, Marjan (2005). "O pomenu meridiana 15° vzhodno od Greenwicha" [About the Significance of the 15th Degree to the East of Greenwich Meridian] (PDF). Geodetski vestnik (in Slovenian). Vol. 49, no. 4. pp. 637–638. Retrieved 5 January 2010.
^"Spremembe v površini Slovenije" [Changes in the Surface of Slovenia] (PDF) (in Slovenian). Statistical Office of the Republic of Slovenia. 1 July 2018. Archived from the original(PDF) on 26 March 2023. Retrieved 27 February 2023.