For me it would include both. I think about the outcome people want from the habitat. So whether it's natural and untouched or it has been through a process of development, perhaps, with permanent cover put back on the land, what is that land producing? Is it sustaining the species people want to sustain within their area, within their backyard, so to speak? Both undisturbed habitat and habitat that was developed and has been restored can count as a natural area. What is important is what it produces.
On March 26th, 2013. See this statement in context.