A portion of my thesis deals with cultural landscapes. If you would like some excellent reading material about the subject you should look into Cultural Landscapes by Richard Longstreth, Preserving Cultural Landscapes in America by Alnen & Melnick, and Landscape Interfaces by Hannes Palang and Gary Fry.
Another resource that deals with cultural landscapes and time is What Time is This Place? by Kevin Lynch
Hope these help.
-Scott
