Just saw this article about how eating some meat might reduce one’s overall environmental footprint. The study found that while a vegetarian diet used the least amount of land area, it required all the land area to be high-quality agricultural land. Adding a small amount of meat and dairy to that diet uses more land, but some of that is pasture land, which is more abundant in the New York state area and necessary for crop rotation anyway.
Note that the land required for the typical American diet of lots of meat is much greater than either scenario above. So no surprises there.