Abstract: – Morphometric limitations to spatial planning in the Arieş Basin Landscape, through its morphometric parameters, is the defining factor in the relation between the human component and its activities. The present paper consists of an analysis of the main morphometric parameters ((hypsometry, slope, depth of the fragmentation, fragmentation density, slope orientation) in quantitative terms, for the entire surface of the morphohydrographic basin of the Arieş, as well as for the major landforms in its perimeter, considering the vast complexity generated by the diverse geological structure. The entire research is supported by GIS raster and vector databases integrated in spatial analysis modules, statistics and geoinformational programs aimed mainly at extracting quantitative information for each such feature.