There are some legislations around the world aimed at controlling ecocide. These, however, are all within national jurisdictions and implementation and enforcement has been weak.
Russia—Article 358
Massive destruction of the animal or plant kingdoms, contamination of the atmosphere or water resources, and also commission of other actions capable of causing an ecological catastrophe, shall be punishable by deprivation of liberty for a term of 12 to 20 years.
Kazakhstan—Article 161
Mass destruction of flora or fauna, poisoning the atmosphere, land or water resources, as well as the commission of other acts which caused or a [sic] capable of causation of an ecological catastrophe shall be punished by imprisonment for a period from ten to 15 years.
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Kyrgyz Republic—Article 374
Massive destruction of the animal or plant kingdoms, contamination of the atmosphere or water resources, and also commission of other actions capable of causing an ecological catastrophe, shall be punishable by deprivation of liberty for a term of 12 to 20 years.
Tajikistan—Article 400
Mass destruction of flora and fauna, poisoning the atmosphere or water resources, as well as commitment of other actions which may cause ecological disasters is punishable by imprisonment for a period of 15 to 20 years.
Georgia—Article 409
Ecocide i.e. contamination of the atmosphere, soil, water resources, mass destruction of fauna or flora, or any other act that could have led to an ecological disaster shall be punished by imprisonment for a term of 12 to 20 years. The same act committed during armed conflicts shall be punished by imprisonment for a term of 14 to 20 years or with life imprisonment.
Belarus—Article 131
Intentional mass destruction of flora or fauna, or poisoning of atmospheric air or water resources, or committing other deliberate actions capable of causing an ecological disaster (ecocide) are punished with imprisonment for a term of ten to 15 years.
Ukraine—Article 441
Mass destruction of flora and fauna, poisoning of air or water resources, and also any other actions that may cause an environmental disaster shall be punishable by imprisonment for a term of eight to 15 years.
Moldova—Article 136
Deliberate mass destruction of flora and fauna, poisoning the atmosphere or water resources, and the commission of other acts that may cause or caused an ecological disaster shall be punished by imprisonment for ten to 15 years.
Armenia—Article 394
Mass destruction of flora or fauna, poisoning the environment, the soils or water resources, as well as implementation of other actions causing an ecological catastrophe, is punished with imprisonment for the term of ten to 15 years.