James Corner, in an essay entitled "Terra Fluxus," describes the main qualities of Landscape Urbanism:
Process in time: urbanization is a dynamic process characterized more by terms like fluidity, spontaneous feedback, and non-linearity, than stability, predictability, or rationality. Ecology and systems theory are concepts inherent to the city.
Surface, not form: horizontality and decentralization in places like Los Angeles, Atlanta, Houston, San Jose, and the suburban and exurban fringes of most American cites is the supermajority of the American urban condition. As many theories of urbanism attempt to ignore this fact or retrofit it to new urbanism, Landscape Urbanism intelligently tries to understand it and find solutions for it. Landscape Urbanism uses 'territories' and 'potential' as well as 'program' to define strategies; it finds thinking in terms of adaptable 'systems' instead of rigid 'structures' as a better way to organize physical improvements.
Form: the traditional character of the city; formlessness characterizes nature, that which has been untouched by human intent. This city/nature duality is critical to most theories of urbanism. Landscape urbanists argue that this is duality is naive and argue for a conflation of landscape and building.