Decreases in the impacts that air quality has on other aspects such as
atmospheric deposition, damage on crops and forests and affectation of human health have also been witnessed. Regarding impacts on ecosys- tems due to atmospheric deposition (exceedance of critical loads) the affectation due to sulphur has been widely mitigated in the studied pe- riod, an issue that is directly related to the restrictions imposed on sul- phur contents of fuels and to the shift to cleaner fuels in the power generation and industrial sectors.