Ecological disasters, first

St Petersburg) first appeared in the Soviet press in June 1987. Then in March 1988 Martin Walker, writing in the British newspaper The Guardian, described how the situation at Kirishi had developed into the worst ecological disaster since Chernobyl . ... 

Calculating the scale of natural disasters presumes, first, predicting their ecological consequences. They manifest themselves, gradually over time, as reduced productivity of ecosystems, changes in the structure of the water balance over the territory, and violation of vital environmental parameters. In other words, when... 

---