The ecological basis of the quality norms for the ecosystem of lake Baikal and its permissible anthropogenic load

In this paper we substantiate the ecological approach to the establishing of norms of quality of Baikal ecosystem and norms of permissible impacts on it. This approach is based on the ability of species' populations to function firmly in conditions of anthropogenic pressure. We also define a stable ecosystem as a system which preserves its own diapason of natural variability of the parameters of its biotic community.