Discusses following topics: position of the georelief in the landscape and its influence on the spatial differentiation of landscape-ecological processes, landscape as a spatially organized autoregulating system and the georelief as its special subsystem, definition of the georelief and the expression of the set as its morphometric parameters characterizing georelief in its arbitrary point, geometric forms of the georelief, their hierarchical levels and the expression of morphometric spatial units on the basis of morphometric parameters. -Author