Just as central planning actually destroys economies, it destroys environments. The answer is important. A free marketer would say, 'man's', while an environmentalist would say, 'the Earth's. This is why capitalism is seen as 'rape' of the earth. The betterment of Man is civilization's compass.
Man comes second.
Or not at all. Aaron Wildavsky wrote that the term pollution is culturally defined, and originally referred to the spiritual pollution of men from coming into contact with women. This is why people still believe Marx. Rich, they think, had to of gotten rich because they robbed from the poor. Environmentalism operates under the same idea.