environmental impact of the russian invasion of ukraine
The 2022 Russian invasion of Ukraine has led to widespread and possibly serious and long-term environmental damage, The Ukrainian government and journalists and international observers describe the damage as ecocide.
Explosions inflict toxic damage along with physical destruction. After every explosion particles of toxic substances; such as lead, mercury and depleted uranium; are released into air, water, and soils. When ingested explosives like TNT, DNT, and RDX, cause illness.Fights in heavily industrialised areas lead to technological disasters, such as spills of tailings and fuel, that poison vast territories not only in Ukraine, but also in Europe and Russia. Destroyed buildings release carcinogenic dust for decades. Heavy metals and chemicals penetrate underground waters and poison water sources, killing all life in rivers and water bodies. Destruction of civil infrastructure has already left more than 4 million people without access to pure drinking water. Soils in areas of military conflict are no longer fit for agriculture, because plants draw up and accumulate the pollutants. 
War also increases the risk of nuclear accidents. Power shortages at nuclear plants and fights in vicinity of stations may result in disasters like in Chernobyl or Fukushima. Military emissions of CO2 reach hundreds of million tonnes and undermine the goals of the Paris Agreement.
More than 12,000 square kilometres (4,600 sq mi) of Ukraine's nature reserves have become a war zone. Populations of rare endemic and migrant species suffered great losses, birds were forced to abandon nests and change their usual migration routes. The efforts of decades-long conservation projects were ruined.
Estimating the total environmental damage inflicted by the war is not possible until it ends. According to preliminary data, it will take Ukraine's nature at least 15 years to recover.

War damage to nature
Environmental damage caused by war can last for centuries. According to studies, soils near Ypres in Belgium still contain more than 2,000 metric tons of copper after World War I. In Iran, soils are still contaminated with mercury and chlorine after fights during the Iranian Revolution. The First and Second Chechen War left more than 30% of soils in Chechnya unsuitable for agriculture.Depending on soil pH and access of oxygen and water, it takes from 100 to 300 years for ammunition to degrade. Destroyed cities pose a huge ecological threat because undetonated bombs are buried in debris, ruined houses release cancerogenic dust (sometimes for decades), and millions of tonnes of rubble are almost impossible to recycle. Asbestos may be released into the air from the rubble. Forced mass relocation of people overloads the infrastructure of host regions. Refugee camps accumulate waste and have almost no recycling facilities.In 2014, it cost approximately 2.5 euros to plant a mine in Ukraine, while to clear it cost more than 900 euros. Lots of research is required to fully estimate the environmental damage caused by the Russian invasion, though this is impossible until there is a complete ceasefire. As of June 2022, Ukraine's Ministry of Envinronment estimates the cost at 6.6 bln euro. The so-called carbon 'bootprint' of this war is counted in millions of tonnes and undermines efforts towards CO2 emissions reduction.

Direct pollution
After the first two weeks of hostilities air monitoring in Kyiv showed pollutant concentrations 27 times higher than normal. Explosions, destroyed armor and vehicles, burning and spilled fuel pollute air, water, and soils. The explosion of every bomb releases particles of heavy metals, formaldehydes, nitrous oxide, hydrogen cyanide, and toxic organic compounds. These pollutants are spread by winds and underground waters, which is why the hazardous ecological impact of war will directly affect Russia and Europe. The explosives release chemical compounds that are oxidized in air and may cause acid rain. They can 'burn' vegetation and respiratory organs of mammals (including humans).Ammunition is 95-97% made of lead, the rest is zinc, nickel, barium, manganese, copper, antimony, etc. Sometimes it contains depleted uranium. Lead is highly toxic and highly ingestible, it enters the human body not only when people breathe eat and drink, but also through skin and hair. Prolonged exposure to lead causes kidney failure, and even short-term contact affects the nervous system and induces encephalopathy, as well as anemia, loss of coordination and memory. Similar neurotoxic effects occur in animals.Particles of depleted uranium are 100 times smaller than leukocytes and easily bypass the blood-brain barrier, they directly reach the olfactory nerves and disrupt cognitive processes. Antimony causes inflammation of cardiovascular, respiratory and digestive systems. Nickel also damages the immune system. Exposure to high concentrations of copper, manganese and zinc can have a poisonous effect and induce pneumonia, pulmonary fibrosis, and lethargy. Microparticles of destroyed ammo shells get into water and penetrate human and animals' bodies through the food chain.Explosives, such as TNT, DNT, and RDX, cause chemical pollution and induce acute intoxication and long-term mutagenic effects in people. TNT is easily absorbed through skin and mucous membranes. Depending on the dose, its cancerogenic effects can induce alopecia, anemia, liver failure, and cataracts, and change blood composition. Hexogen poisoning causes nausea and anemia, prolonged exposure leads to kidney and liver failure. DNT is also toxic, in high doses it can disrupt the cardiovascular system and provoke oncology. The explosion of one BM-21 Grad releases more than 500 gr of sulfur that reacts with water and turns into sulfurous acid. War-damaged land is 'burned' with acid.According to the Pentagon, by July 2022 at least 1200 rockets and bombs had exploded in Ukraine. In the first days of the invasion, the Russian army bombed ammunition depots located near urban areas. Toxic clouds raised by the massive explosions and fires covered residential districts and villages; severe damage to health of the locals may be the result. The infamous 'Pančevo cancer' is an example of such exposure — a spike of oncology has been recorded among Pančevo 1999 bombing survivors. Many scientists are sure that toxic damage caused by hostilities is even more hazardous to the human population than explosions.According to Russian journalist Yulia Latynina, the toxic fuel of malfunctioning air-launched cruise missiles from Russian Tu-95 and Tu-160 bombers deployed over the  Caspian Sea during the invasion caused the mass die-off of Caspian seals in 2022. According to this, some missiles fail to launch properly due to their age and fall close to their launch point. To avoid accidental falls on land, launches are made over water. Since the start of the invasion several mass die-offs of Caspian seals have been recorded (such as in spring 2022 when between 31 March and 2 May 832 carcasses were found in Kazakhstan's Mangystau Region and in summer of that year when 837 carcasses were found on Kazakhstan's coast).

Bombing of industrial sites
Eastern Ukraine was a highly industrialized area with more than 900 facilities and production centres, including coal mines, oil refineries, chemical labs, steel plants, etc. The  Conflict and Environment Observatory (CEOBS) estimated that more than 10 mln tonnes of toxic waste and tailings are stored in this region. Direct hits and explosions result in leakages of hazardous materials that poison air, water, and soils. Accidents at high-risk industrial sites can escalate with a 'domino effect' and cause disastrous thermal, hydro, and chemical discharges.As of April 1, 2022, more than 36 attacks had been registered on fossil fuel infrastructure, 29 attacks on electricity stations, seven on water infrastructure, and six on nuclear sites. More than 60 fires had happened at Ukraine's oil refineries by June 2022. Accidents at huge industrial enterprises such as Azovstal, Lysychansk Oil Refinery, or Sumykhimprom could lead to disastrous environmental damage. However, Azovstal initiated a program of environmentally safe shutdown in the first week of the Russian invasion. Coke ovens were stopped, the temperature was lowered, and liquid glass was poured in to prevent the coking process from continuing and the coke oven gas to be released as intensively as possible. On February 25, chemical reagents were disposed of. An attack on Lysychansk refinery ignited the 50,000 tonne tank of oil sludge, two reservoirs with 20,000 tonnes of petroleum, and a sulphur store.
The number of attacks on industrial centres caused international observers and the Ukrainian government to identify them as ecocide. For instance, on March 21 ammonia reservoirs at Sumykhimprom were hit. The resulted leakage covered an area 2.5 km in radius, and the people of Novoselitsy village were told to hide in shelters. On April 5 and 9 nitric acid tanks in Rubizhne were blown up: the police of the Donetsk People's Republic and the Ukrainian army blamed each other. On April 4, 2022, a Russian rocket was shot down in Kremenets region, the debris fell onto a farm and hit reservoirs with organic fertilizers, causing leakage. Though the tanks were nearly empty, the spill was enough to poison the local river Ikva. In a few days, water sampling showed ammonia concentration 163 abovethe safe level, and dead fish were reported on its banks. On May 31, in Severodonetsk district a tank with nitric acid was blown up, a chemical cloud forced locals to hide in shelters. As of June 2022, Ukrainian observers registered more than 2000 cases of environmental damage caused by hostilities.Forced migration is another risk caused by the war, because without human control even out of service industrial sites may be hazardous. Most plants and industrial sites in East Ukraine were built in Soviet times, by now the infrastructure is significantly worn-out. For instance, at Dzerzhinsk phenol plant there are two ponds of toxic waste one of which has a dam that was identified as unstable in 2019. In case of a breakthrough, 8 mln tonnes of chemical waste will pour onto the surrounding lands and the Zalizna river, poisoning all water sources in the region, and reaching the Seversky Donets that flows into Russia.Coal mines throughout eastern Ukraine have deteriorated rapidly, as active and expanded hostilities have made it difficult for maintenance projects to continue. The potential for pollution of ground and surface water throughout the entire Donbas region has been reported. When a mine is flooded, radionuclides and toxic substances contaminate underground waters, poisoning water sources of local residential areas. Eurocommission specialists registered at least 35 abandoned coal mines in Donbass, including the 'YunKom Mine' which was used for a nuclear test in 1979. The waters of Komyshuvakha river turned orange in 2021 because of leakage from the abandoned 'Zolotoe' mine. Risks of a man-made disaster caused by the Russian invasion are growing with every day of the war.Worst-case scenarios include pollution of the Azov sea with toxic waste.

Nuclear threats
Damaged biologics systems
Fertile soils
Battles and shelling ruin fertile soils for a long time. The highly fertile chernozem, which made Ukraine one of the world’s largest grain exporters, suffers from pollution with heavy metals, chemicals, lubricants, and spent fuel. Vegetation grown on contaminated land absorbs these pollutants and transfers them to humans via the food chain. According to a UN estimate, in 2022 in Donbass alone more than 530 ha were rated areas of ecological catastrophe.Research indicates that chernozem is physically damaged by tanks and heavy vehicles: their weight makes the soil clump and stick together, and earthworms and other animals that normally stir up and aerate soil are scared off by the noise. Communities of soil microbes are reduced at least for several years. Wet soils need at least four years to recover from tank traffic. Also, with the decrease of vegetation cover, pollutants penetrate easily and tend to go deeper into the ground.Ecologists also mention that an abrupt suspension of agricultural use on fields leads to uncontrolled reproduction of mice and weeds and brings additional hazards to human health.

Water sources
The Russia–Ukraine conflict has had a profound impact on water resources and water infrastructure.Rivers and water bodies are strategically important objects. The Dnieper, 
Donets, and Irpin serve as natural defences. The Black Sea also became a theatre of war. Destroyed and abandoned vehicles pollute water with leaking fuel and lubricants: fuel spills induce fires and ruin the chemical balance of water. Oil itself is highly toxic to marine wildlife and microorganisms, but also it contains hydrocarbons that dissolve pollutants such as pesticides or heavy metals and lead to their concentration in the upper layers of water.Dam destruction causes degradation of vast territories, as well as soil and water contamination. For example, on February 26, 2022, a dam on the Irpen river near Kozarovichi village was destroyed by Russian troops, resulting in a flood that covered more than 10 km and reached Horenka. Any effects on the biodiversity of the Gulf of Odesa, Danube Delta, and Azov Sea, are yet to be estimated.The Seversky Donets river was in a critical condition back in 2018. The river serves as a water source for all Donbass, but levels of heavy metals and alkylphenols in it were seven times higher than acceptable. In 2022, bombs destroyed Popasnyansky and Uzhnodonbassky waterways, 'Seversky Donets - Donbass' channel, and the Donetskaya filtration plant was stopped several times due to power shortages. Untreated sewage runoff spilled into the river after pipeline ruptures. The hostilities destroyed the water infrastructure that served 4 million people and left them with no access to clean drinking water. Drinking polluted water affects inner organs, sometimes a week is enough to poison the liver and cause death.Polluted waters flow downstream and contaminate soils and underground water in Russia.

National parks and nature reserves
Ukraine's national parks and reserves are a part of pan-European chain of protected sites titles 'the Emerald Network', they are a home to many endangered species. Preliminary assess showed that more than 1.24 mln (more than a third) ha of protected sites in Ukraine were affected by war. According to the Ukraine Nature Conservation Society, more than 44% of the most valuable natural areas of Ukraine are covered by war.Russian troops dug trenches in nature reserves, built fortifications, and planted and exploded mines. In the Great Meadow National Nature Park Russian tanks moved through the fields of endangered spring meadow saffron that had been part of a conservation program for 16 years. Fighting near Kherson in the Black Sea Biosphere Reserve was so intense that the fires were seen from space.Meotyda National Nature Park near Mariupol is a habitat and nesting place of many endangered birds, including the dalmatian pelican and the Pallas's gull. Fighting in forest reserves of the Kinburn Spit lasted more than a week, and caused irreparable damage to the local ecosystem. Dzharylhak National Nature Park, home to many rare endemic herbs, and wild boars, foxes, and deers, became an active fighting zone; more than 56 km of its shores were planted with mines. Also, the war forced many inspectors and environmentalists to leave their workplaces, disrupting the results of many decades-long conservation and biodiversity projects.On 6 November 2023 the Ministry of Environmental Protection and Natural Resources of Ukraine reported that the Dzharylhach National Nature Park had been completely destroyed due to "Russian armed aggression" during the Russian occupation of Kherson Oblast.

Animals and birds
More than 70 thousand species of flora and fauna live in Ukraine, accounting for more than 35% of Europe's biodiversity. War directly affects local populations and also disrupts migration. Wild animals are killed by shelling and bombing; fires, explosions, and vibrations scare off the animals, force birds to leave their nests, and disrupt their food chain. When forcing rivers, heavy vehicles pollute waters with fuel and lubricants that poison insect larvae. The lower their number, the fewer frogs there will be, meaning no food for cranes. Fighting in spring, most species' breeding season, multiplies the damage.During the annexation of Crimea by Russia in 2014, Russian troops landed and moved through the protected lands of the Krivaya Kosa nature reserve, instantly destroying nests of the red book listed Pallas's gull. Because of the bombings, in 2022 only 300 Dalmatian pelicans instead of the usual 1500 migrated through the Krivaya Kosa. In just the first three months of the war 200 bombs were dropped onto Tuzly Lagoons.Conservationists of the Tuzly Lagoons National Nature Park led a 30-year project to restore the connection between coastal lagoons and the Black sea. The natural rivulets that serve as a migration route for billions of small fish to breeding areas were dried up by industrial agriculture. Every spring the employees dug shallow channels to substitute them. In 2022 the coast was laced with mines and the employees had to leave, no digging of channels meant no migration routes for fish, no food base for a 5000 strong population of herons, and so a ruined ecosystem.Dolphins are one of the most affected species, hundred of dead animals were spotted along the shores of Ukraine, Turkey, Romania, and Bulgaria. Scientists think that the dolphins died from heavy metal poisoning, explosions, acoustic trauma and disorientation caused by unprecedented noise pollution from military sonars. Mechanical injuries and burns were spotted on some of the bodies. Tuzly Parks' director Ivan Rusev estimates the number of dead dolphins at several thousand.Domestic animals suffer as well. Before the war, there were more than 3.5 million cattle, 5.7 million pigs, and 212 million poultry in Ukraine. These farm animals are hard to relocate, so were often abandoned by owners. Cats and dogs are more frequently taken with evacuated owners, however most are left in war affected areas. Sometimes wildlife returns to the areas deserted by humans. For instance, in Donetsk region populations of wolves, foxes, and wild dogs grew significantly after 2014. The side effect is that these species are frequent spreaders of rabies. A spike of cases has been recorded among local people.

Indirect environmental impacts due to sanctions
When the war started, most international foundations and organisations ceased partnerships with Russia in environmental projects, international studies of climate change in the Arctic were disrupted. In Ukraine, almost all conservation projects were disrupted. The 2021 wildfires in Turkey, Europe, and Siberia, were mostly extinguished by Russian military aircraft. However, in 2022 due to sanctions it was impossible to make such contracts. Even inside Russia, where usually the military help with wildfires, there are no spare because of the war. In combination with an unprecedented heatwave, it can lead to disastrous consequences.

Energy transition
The war in Ukraine may hasten the energy transition. In March 2022, Europe paid Russia approximately 640 million euros daily for oil and gas, and the country's revenues from hydrocarbon exports accounted for more than 40% of its budget. UN secretary António Guterres urged all nations to "to put the pedal to the metal towards a renewable energy future." and called trying to fill fossil fuel supply gap with gas and coal a "mutually assured destruction". Many experts agree that a switch to sustainable energy sources may be more swift and cost-effective than, for instance, building new gas pipelines and terminals.Meanwhile, some are sceptical and almost sure that this war will disrupt all efforts towards the Paris agreement goals. CO2 emissions will increase if some governments decide to replace Russian fossil fuels with imports from other countries and fill the gap with coal energy. Building new supply chains, new logistics and infrastructure in an attempt to replace Russian hydrocarbons will almost surely lock the world into irreversible warming.In 2023, many Asian countries have been forced to return to using coal to keep up with energy demands caused by the heat wave in the region, due to the European boycott of Russian oil reducing the availability of liquefied natural gas (LNG). Bloomberg News reported that Russia exported 7.6 million metric tons of coal to Asia in April, with India and China buying over two-thirds.In the second decade of the 21st century, China make some steps to reduce emissions including decreasing coal use, so it was suggested it will peak emissions in 2022. Due to problems with energy supply in 2022 China has begun to massively approve new coal plants. By the middle of 2023 it approves so much that "“Unless permitting is stopped immediately, China won’t be able to reduce coal-fired power capacity during the 15th five-year plan (2026–30) without subsequent cancellations of already permitted projects or massive early retirement of existing plants.” China begins to build half of the plants approved in 2022 by the summer of 2023. One of the reasons was the war in Ukraine that led to instability in energy supply including rising prices for metals like lithium.The war led to significant increase in the sales of discounted Russian oil to India and China and generally made Russian oil more attractive to BRICS countries. The sanctions created "lower invoice prices for Russian goods" to the countries who buy it. Brazil has also increased its oil, gasoline, naphtha imports from Russia what has lowered the diesel price by 10-15 dollars per barrel.Fatih Birol, the head of the International Energy Agency talking about the prospects of COP 28 noted: "geopolitical situation, with many nations at loggerheads over the war in Ukraine, and still frosty relations between the US and China, would make for a difficult summit." "The most important challenge [to limiting temperature rises to 1.5C above pre-industrial levels] is the lack of international cooperation."

Environmental legislation
After February 24, 2022, many potentially hazardous amendments were made to Russian environmental law. For example, construction is now permitted in nature reserves, emissions norms are decreased, Russian car manufacturers are now allowed to produce models regardless of European eco standards, and an environmental impact assessment will not be needed from businesses in the next two years. The state program 'Clean Air' was also postponed for two years.Cleaning after war-related pollution is a difficult task: it depends on many factors, such as soil pH, microorganisms' activity, and local temperature.

Prosecution
The Ukrainian government, international observers and journalists have described the damage as ecocide. The Ukrainian government is investigating more than 200 war crimes against the environment and 15 incidents of ecocide (a crime in Ukraine). Ukrainian officials state that they are planning to gain the support of the international community to make Russia pay for reconstruction and recovery. Based on a preliminary assessment the war has inflicted USD 51 billion in environmental damage.Zelenskyy and Ukraine's prosecutor general Andriy Kosti have met with prominent European figures (Margot Wallstrom, Heidi Hautala, Mary Robinson and Greta Thunberg) to discuss the environmental damage and how to prosecute it.

See also
Destruction of the Kakhovka Dam
Environmental impact of war
War and environmental law
Climate Change 2022: Impacts, Adaptation & Vulnerability (UN IPCC AR6 WGII & WGIII reports)

References
Notes

References

Sources
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