KAZALCI OKOLJA

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.

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Good

In the period 1992–2023 nitrogen surplus in Slovenian agriculture decreased. Trend analysis for this period shows that gross nitrogen surplus decreased on average by 1.4 kg N/ha per year or by 54%, and the net surplus by 1.2 kg N/ha per year or by 85%. The lower surplus was mainly due to a 43% increase in nitrogen removal by crops and a 6% decrease in nitrogen input per hectare of utilized agricultural area. A lower excess of nitrogen indicates better nitrogen management in agriculture and consequently a reduction in emissions of nitrogen compounds into the environment.

Neutral

The total use of plant protection products (PPPs) in Slovenia has decreased by nearly two-thirds over the past 30 years — from 2,031 tons in 1992 to 733 tons in 2024. Because of the large share of permanent crops, PPP use per hectare in Slovenia remains relatively high, but comparable to other EU countries with a similar production structure. Over the last decade, Slovenia has significantly reduced the intensity of PPP use on utilised arable land and permanent crops: from an average of 6.57 kg/ha in 2000–2010 to only 3.63 kg/ha in 2024.

Good

The phosphorus (P) budget in agriculture decreased by 109 % in the period 1992–2024. The decline is the result of a decreased P intake with mineral and livestock fertilizers, as well as the consequence of increased P uptake by agricultural crops. The period up to 2003 was characterized by a surplus of 11 to 16 kg per hectare. Thereafter, the surpluses decreased and reached an average value of +0.4 kg P per hectare in the last five-year period. A realistic comparison of the surplus with other EU Member States is not possible.

Neutral

Annual growing season length is increasing almost everywhere in Europe, mostly in Eastern and Northern part. In Slovenia, the length of the annual growing season is increasing, especially since mid-1990s. According to projections, the duration of the annual growing season throughout Europe will increase in future.

Bad

Trends in annual precipitation are not as obvious as temperature trends. Changes between years and differences between regions are significant. According to climate change projections, annual precipitation will increase slightly while changes in seasonal precipitation will be more noticeable. Summer conditions are the most worrying, because less precipitation and higher temperature might result in higher frequency of droughts. In winter, more precipitation may lead to an increase in flooding events.

Neutral

Comparison of periods 1961–1990 and 1991–2020 on the chosen representative stations around Slovenia shows decrease of heating degree days by around 10 % and multiple increase of cooling degree days. With projected continuous temperature raise until the end of 21st century, those trends are expected to continue. Thus, in Slovenia, energy demand for cooling will increase in the warmer period of the year, while the energy demand for heating will decrease in colder period of the year. Same trend is projected for Europe in general.