The encyclical letter Laudato Si is available here on the Vatican website.
95. The natural environment is a collective good, the patrimony of all humanity and the responsibility of everyone. If we make something our own, it is only to administer it for the good of all. If we do not, we burden our consciences with the weight of having denied the existence of others. That is why the New Zealand bishops asked what the commandment “Thou shalt not kill” means when “twenty percent of the world’s population consumes resources at a rate that robs the poor nations and future generations of what they need to survive”.[New Zealand Catholic Bishops Conference, Statement on Environmental Issues (1 September 2006)]
This is a good summary, I would say. Ownership of the environment is a moral and practical impossibility. Actions in the area of the environment have real consequences with real human beings. The commandments apply.