I think of “nature calls” and “human nature”. It feels too literal, and maybe not entirely positive. I think I’d be confused for a second if someone introduced themselves as [name_m]Nature[/name_m], I might even mishear it for [name_f]Rachel[/name_f]?
I might prefer other broader-scope nature names, for first or middle spots, like [name_f]Snow[/name_f], [name_m]Woods[/name_m], [name_f]Valley[/name_f], [name_m]Sky[/name_m], or [name_m]Forrest[/name_m]