Destruction of wilderness is a different thing from man-made global warming theories, the purpose of which is to discourage energy use.
Wilderness is not always a good thing, and development it for man’s use is not always a bad thing. Take Kansas, for instance. What would it be like if it was a true “wilderness”? Well, nobody knows for sure, because Indians used to burn the whole place off annually. But it’s fairly reasonable to believe it would consist in tall grass prairie in about the eastern half and short grass prairie in the western half. As a “wilderness”, it would abound in large ruminants and predators. As a “non-wilderness”, a good part of it is tall grass prairie and part of it is short grass prairie, both populated by large ruminants (cattle), with man as the primary “large predator”. Part of it is a “grass monoculture”, i.e., wheat, which is a grass. Some of it is in corn, which is also a grass.
Some years ago, anthropologists discovered that hundreds of years ago, vast portions of the Amazon rain forest were under cultivation by humans. Additional large segments were, in effect, “orchards” with fruit and nut bearing trees from as far away as Peru.
I recall when, a few years ago, the Dept of Natural Resources was thrilled to find “native pecans” in the Mark Twain National Forest. They excitedly studied the DNA, only to find that the trees had been brought from Oklahoma by Indians. It later turned out that the pecan trees in Oklahoma had been imported by Indians from TExas.
Nobody on this earth knows what a true “wilderness” is, inasmuch as the hand of man has altered every bit of it.
Mismanagement, though, is another thing entirely. Huge portions of China, for example, (same in Russia and Africa and other places) have been terribly mismanaged to the point that they’re “desertified”. Desertification itself is a powerful atmospheric warmer. There is a tremendous amount of mismanagement in the world. Temperature measurements taken anywhere near desertified places are going to show increases. Among other places, a great deal of the American West has been desertified due to BLM mismanagement.