Environmental indicators in Slovenia

Environmental indicators are based on graphs, maps and assessments and as such present environmental trends in Slovenia. The indicators represent one of the four pillars of our environmental reporting, and are prepared in accordance with the Environmental Protection Act. The Environmental Indicators in Slovenia website enables users to browse among 180 indicators. They are based on numerical data and they indicate the state, characteristics and trends of environmental development in Slovenia. They are prepared using a systematic approach based on data and monitoring, as shown in the information pyramid.

Did you know?


Greenhouse gas (GHG) emissions due to land-use change generally show a declining trend. GHG emissions from deforestation decreased by 1.3% in 2018 compared to the previous year, with more than half, i.e. 56.2%, of these emissions coming from the establishment of agricultural land. In 2018, GHG emissions decreased by 6.4% over the previous year due to land conversion to built-up and related land. The largest share of emissions (49%) is due to the conversion of agricultural land to built-up and related land.


In the period 2002-2020, the highest exposure to ozone concentrations were detected in the Primorska region in summer where air quality measuring stations in Koper and Nova Gorica detected highest ozone concentrations in ambient air. There are some differences from year to year in a level of ozone exposure due to meteorological conditions in the warm half of the year and other regional characteristics.  


The Slovenian EHVZ database (Hydrography and Water Land Records) contains 67.549 watercourses with total length of 41.071 km. Total area of still waters is 24 km2 and river reservoirs 31 km2.

For use in water management, water land areas are delineated. Total area of water land in Slovenia is 387 km2, which is 1, 9 % of continental area of the Republic of Slovenia. Marine water land area is 214 km2.


Deadwood is an important animal and plant habitat that contributes to the biodiversity of forest ecosystems. According to Slovenia Forest Service data, the volume of standing and fallen trees without stumps and branches in 20119 was 19.6 m3/ha, which represented approximately 6% of the entire wood stock of forest stands. In virgin forests, however, the deadwood volume can be even several dozen times larger.


Regarding the forest area, deforestation accounts for an insignificant share. The average of the last ten years is approximately 405 ha (between 350 – 550 ha per year) and thus does not represent a significant factor in forest cover changes. Until 2008, most deforestation is a result of infrastructure facilities construction..


In the past centuries, forest area has been increasing constantly after 2010; however, the rate of expansion has slowed down and remains relatively stable in recent years. Since 1875, when forests covered only 36 % of the Slovenian territory, forest cover has increased to 58.5 % in the year 2009 and rests stable today at 58,0 %. In terms of forest share, Slovenia ranks third among EU-28 countries, behind Sweden and Finland.