You can find some good ideas by looking up videos on gardening in Arizona. They have different techniques they use than us. Specifically, one thing they do is the wood chips over the ground. But they aren't doing that to enrich the soil so much as trying to create a HEAT SHIELD, over the ground around the tree for a few feet in radius. Then you can set up drip irrigation and some other things to stabilize whichever types of trees that you decide to go with.
Are you asking about a tree that produces something, or any kind of tree?
If possible, and if you are going through all that trouble to set it up, you might as well try to get something that will give you fruit...