Mind if the newbie has a try at it?
I'm under the impression that on a very general scale, (obviously every man is his own) pagans tend to be far more apt to holding a positive environmental attitude than Christians. Here's why..
A pantheistic world view has a tendency to view all things as co-dependant or interconnected. This respect in all things allows for a more open and protective attitude toward that with all that which we are intimately connected. BUT on the other side of the fence, Christian beliefs state that mankind is set apart from nature, made in god's own likeness. They tend to believe that they are not equal to, but rather set apart from the rest of creation. This, added to the fact that the Christianity is one of the few religions that does not clearly state the believers responsibility to the earth, hinders them from developing a positive environmental attitude. It's a very subtitle but dangerous conviction to put human needs before that of everything else but for some, anything less is just too close to blasphemy and pantheism. I'm not saying that Christians tend to be anti-environment, just that they tend to be apathetic or hesitant to take any sort of protective action in the matter. Making things worse in this regard is their tendency to have an 'End Times' attitude, which holds the understanding that not only was the earth was made just to suit our needs but will soon be destroyed by god anyway. *shrug..
As for me, i fall into the environmentalist-pagan category.