The concept of landscape ecological stability, its protection and reco
nstruction are considerably well established in the environmental legi
slation of the Czech Republic. Plans and projects both of ecological s
tability systems, which are an indispensable prerequisite of land impr
ovement, and landscape segments revitalization require the evaluation
of desired and present stabilizing functions of the ecologically impor
tant segments. Both principal functions (specific) which the segment s
hould fulfil principally and other functions stemming from the segment
position within a landscape mosaic are considered. A simple method wa
s designed to evaluate the stabilizing functions (both desired and rea
l) of fundamental landscape segment types including a model illustrati
ng the complex evaluation of the environmental effect and pointing out
those functions which should be promoted or streamlined.