Urban landscapes is an approach to urban design in which the elements of cities, water, land-form, vegetation, vertical structures and horizontal structures are composed: visually, functionally and technically with regard to human use and the landscape context.
Urban landscapes photography about making images of man-made constructions within the city. It is about isolating the smaller parts the city is built upon, as buildings, bridges, and streets.
I think it is a variation of sort, of cityscape photography, but it focuses more on details within the city. These details are not the people but the architectural aspects and street photography. In urban landscapes, we preferably want to avoid too many people in the images because then it can turn into street photography.