and from different surfaces of runoff. The runoff 
particles dispersion takes place over the areals 
which are mostly delayed by geochemical obstacles and 
this leads to extra-accumulation of harmful 
substances in the conditions of closed depressions. 
There the principal significance has the ratio 
of lithological and morphological geosystem elements 
which create special conditions for forming biotic 
properties. Also exogenous factor plays an important 
role which is understood as mostly surf iciai 
displacement of denudation material. In such 
conditions an intensivity of the process is determined 
by the activity of the tectonic movements and 
climatic data. 
Also the vegetation factor is very important as 
it is. I would like to focus here your attention 
taking into account first of all the relation of 
vegetation and other habitat factors. That the like 
an axiom to say that the différencies in vegetation 
are determined by the environment conditions 
différencies. But that correlation can not be 
violated by current modifications of environment and 
vegetation as in past as well as at present. 
Historical factors and anthropogenic processes begin 
to play here the decisive role. 
In the process of realization of ecological 
anaIyses the vegetation societies are characterized 
by their composition, types availability, their vital 
state, forms of growth and spatial distribution. 
The vegetation as an object of direct image on 
the space photos 
is studied mostly completely and multifacetica1ly, 
This first of ail aiows to determine the real picture 
of modern state of vegetation by a number of 
parameters: formational composition, structure and 
dynamics of its separate elements. Secondly a number 
of indicative features and vegetation specifications 
are investigated simultaneously for the study- 
environment components difficult for 
observation which reflect its functional connections 
through substrate properties,water content conditions, 
drainage state, etc. 
The complication of such complex analyses is 
methodologically determined by the complication of 
the levels of ecosystems functioning in the 
conditions of concrete situations. For think, I think, 
there is a need to separate the system to several 
interconnected structural levels which will provide 
for its integrity. Also the separation can be in other 
form, for example, by trophical levels of ecosystem. 
But everytime in such cases you should look for the 
factors which provide its integrity in the concrete 
landscape structure development conditions. 
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