Species diversity in Slovenia is stil considerably well preserved, distinctly higher in western part of the country. Without systematic monitoring on permanent plots it is impossible to recognize short term trends, but in some regions negative trends are result of landuse changes and impact of alien invasive species.

The share of present invasive species (eg. Robinia pseudacacia, Ailanthus altissima, Buddleja davidii, Erigeron annuus) in the last decade shows an increasing trend. An increase in the share of invasive species is evident along the great lowland rivers Sava, Mura and Drava, as well as along the Kolpa river. In higher areas of Slovenia, particularly in the Alps and the Dinaric region, invasive species are very few or entirely absent. However, a notable increase in their share along the western border of the Dinaric region raises concerns.

The above-average years 2013 and 2014 were followed by average year 2015 and average period 2016 – 2019 of annual runoff. In the year 2020 annual runoff was below-average. In the period 1961 - 2020, the driest years were 2011, 2007, 2003, 1983, and 1971. The long-term downward trend of river runoff from the territory of Slovenian currently persists.

Designated areas, which include Natura 2000 and protected areas, cover 40% of the total area of the country, which is almost six times more than in 1992. The increase in designated areas is due to designation of Natura 2000 network in 2004 and more landscape parks from 2008 until 2019. For any planned construction activity on designated areas a nature conservation consent is needed.

The results of the Energy Efficiency Survey of Slovenia (REUS) 2021 show that 61 % of Slovenian households rarely or never use public transport. Depending on the type of settlements, the largest share of households that use public transport live in Ljubljana and Maribor, as well as in the Obalno-kraška region. A good tenth of those households that use public transport, has used public transport in the recent week, while a fifth of households used public transport in the recent month.