Russia has targeted electric grids, oil refineries, and nuclear plants, damaging ecosystems, soil, and water. Attacks on oil depots caused tens of thousands of blazes that have burned across Ukraine. About a third of the country’s forests have been affected, and over 57,000 acres - 230,000 sq km - of forests have completely burned down.
There’s a related research paper on the "Impact of the Russia–Ukraine armed conflict on water resources and water infrastructure" published just yesterday for those interested: