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+ANNEX V |
ANNEX V
ANNEX V OPTIONAL INDICATORS FOR MONITORING AIR POLLUTION IMPACTS REFERRED TO IN ARTICLE 9
(a)
for freshwater ecosystems: establishing the extent of biological damage, including sensitive receptors (microphytes, macrophytes and diatoms), and loss of fish stock or invertebrates: the key indicator acid neutralising capacity (ANC) and the supporting indicators acidity (pH), dissolved sulphate (SO4), nitrate (NO3) and dissolved organic carbon:
frequency of sampling: from yearly (in lake autumn turnover) to monthly (streams).
(b)
for terrestrial ecosystems: assessing the soil acidity, soil nutrients loss, nitrogen status and balance as well as biodiversity loss:
(i)
the key indicator soil acidity: exchangeable fractions of base cations (base saturation) and exchangeable aluminium in soils: frequency of sampling: every 10 years;
supporting indicators: pH, sulphate, nitrate, base cations, aluminium concentrations in soil solution:
frequency of sampling: every year (where relevant);
(ii)
the key indicator soil nitrate leaching (NO3,leach): frequency of sampling: every year;
(iii)
the key indicator carbon-nitrogen ratio (C/N) and the supporting indicator of total nitrogen in soil (Ntot): frequency of sampling: every 10 years;
(iv)
the key indicator nutrient balance in foliage (N/P,N/K, N/Mg): frequency of sampling: every four years.
(c)
for terrestrial ecosystems: assessing ozone damage to vegetation growth and biodiversity:
(i)
the key indicator vegetation growth and foliar damage and the supporting indicator carbon flux (Cflux): frequency of sampling: every year;
(ii)
the key indicator exceedance of flux-based critical levels: frequency of sampling: every year during the growing season. 1. Ħarsa ġenerali
1.1 Referenzi1.2 Rekwiżiti identifikati1.3 Standards relatati2. Rekwiżiti identifikati
3. Standards relatati
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