Prevent mortality Oak from Air Pollution in the western Iran by applying nano technology

The ecologic study approach is used to find links between air pollution and drought for oak decline and excess mortality of oaks. In this approach .Iran Forest Service data at the state level are used with air pollution and drought data for the latter half of the 2000s. Air pollution is found to be very highly correlated with oak decline in the western Iran . Excess oak mortality rates appeared starting in about the mid-1999 and continue to increase today. The excess mortality is thought to be due to the accumulation of years of effects of air pollution and drought . In the other country such as Span , Turkey were seen this effect. Purpose of this research is the offer best solution according to environment and use for prevent mortality oak that is apply new technology such as nano technology.