Mark Krawczyk wrote:
Sounds great Dennis! I'd also add black locust (and perhaps New Mexican locust assuming it's hardy enough as I think it's a bit more dry adapted) to the mix as well (and maybe nanking cherry too). Also, have you ever ordered from Lincoln Oakes Nursery in North Dakota? They're in a slightly different landscape, but I wouldn't be surprised if the climate is somewhat similar. I've gotten some nice stock from them in the past and have found their prices to be very reasonable.
Sounds like beautiful country there. So basically just about any hardwood/deciduious/broadleaf tree will coppice that will grow where you live. My first question would be what are you coppicing for? With that information we could talk more about specific species suited to your climate that may have those properties. Ideally you're irrigating trees grown for wood products as little as possible, so I'd echo what others have said and look at the native species that already grow well in your locale. 'Trash' trees are often some of my favorites. They may not be 'perfect' when it comes to specific qualities, density, rate of growth, workability, etc, but if they are happy to grow and thrive with little care, then they're great candidates in my book. So the Siberian elm definitely sounds like a winner.
I've spent some time in the Rockies in Colorado and there we'd look to poplars/aspens/cottonwoods, willows, alder, Siberian pea shrub, buffaloberry, seaberry/buckthorn Ceanothus species, scrub oaks... Those are some of the ones that float to the top for me. But if you've already got stuff growing there, research how well they coppice. And if you're looking to plant stuff, start with what you specifically need from these plantings. That's my 2 cents at least.