A METHOD FOR DETERMINING ECOSYSTEM NORMAL FUNCTIONING REGIONS . IN ABIOTIC FACTORS SPACES . ... A method for determining the region of normal functioning of an ecosystem in the space of its abiotic factors is proposed. ... The main purpose of the presented method is to delimit in the factor space the region (in form of multidimensional parallelepiped) corresponding to normal functioning of the ecosystem i.e. to determine the boundaries of this region for each factor. ... Let X be a factor of . ...