Regional fördelning av skogsskador i förhållande till mängd SO2 under vegetationsperioden i norra Tjeckien
During the last decades the forest damage in the Black triangle region (where the borders of the Czech Republic, Germany and Poland meet) has increased rapidly. Many attempts to explain the widely spread damage has been done. To quantify the risk of damage, the expression "critical level" has been introduced. Critical level is the highest concentration of an acidifying compound that the
