That's part of the invitation to lie down in the field and play in the field. Our souls are where we play and of course also where we suffer, where we fall down and where we fail. The potential of this image of field is untapped. You rightly put it in a non-anthropocentric context. Not only does every individual, plant and animal have soul but mountains and places have soul.
Communities have soul and groups create soul.
The biosystem itself and Gaia and our Milky Way and cosmos have soul. Our souls shrivelled up during the Cartesian era. If you're cut off from the souls of all the other animals and plants and stars, you're just hiding away inside your own little self-created space. We have shrunk our souls. We are separated from the responsibility for our own actions and our connection to all the joy and pain of the world.