Why the question?
Because of the spare form, perhaps. Because of the real fence that is tending here, somewhere between the fence and its reflection, toward abstraction.
Fences have that general tendency, a characteristic Christo exploited for his "Running Fence," and barbed-wire fences almost disappear in most light (try taking a photo of barbed wire and you'll see that immediately).
|photo by jan wellington|
|christo's running fence|