Gursky (some work) comes to mind, Robert Adams (mens impact on the landscape in BW), Walter Niedermayr (mountain landscape :-)), Peter Bialobrzeski (Paradise now series), Olivo Barbieri (Cityscapes), Anne Lass (at the crossroad between city and landscape), Andrew Phelps (Urban and classic landscape). All except for Robert Adams are color photographers and quiet good imho.

Dominik