+1. Critical levels for the protection of vegetation and natural ecosystems
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1. Critical levels for the protection of vegetation and natural ecosystems
1. Critical levels for the protection of vegetation and natural ecosystems
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If maximum concentrations exceed the critical levels
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one sampling point every 20 000 km2
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If maximum concentrations exceed the assessment threshold
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one sampling point every 40 000 km2
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In island zones, the number of sampling points for fixed measurement shall be calculated taking into account the likely distribution patterns of ambient air pollution and the potential exposure of vegetation.
1. Pārskats
1.1 Atsauces
1.2 Identificētās prasības
1.3 Saistītie standarti
2. Identificētās prasības
3. Saistītie standarti
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