Hello folks!I hope things are going well ,today i want to fulfill my promise.My topic is still under rail disturbance.My research is on how rail disturbance affect soil and air as there under main rail disturbance as we saw on my previous research.
The increase of human population and vehicles ,emissions coming from transportation have become one of the most important sources of heavy metals ,PAHs and herbicides in the soil.
Fuel kindling ,vehicular and track material contusion,and leaked cargo effuse particles containing metals that are deposited in the soils where they can remain for many years due to their low biodegradability.
These emissions are neither biologically nor chemically degraded,they can affect the growth of plants .Infact plants and soil organisms are the first legatee of the emission pollutants.High engrossment levels of heavy metals are often found in the vicinity.
Rail has continues to be an important mode of transportation .Though they have many positive impact,they have serious negative effects on environment especially air.This is because they produce nitrogen dioxide ,carbon dioxide and particulate matter that can contribute to air pollution leading to negative health effects.
This harmful gases results from smoke sent by trains into the air.Even the electric trains use large amount of coal that is burnt.This gases may even cause the destruction of the ozone layer.As we all know how the ozone play an important role to reduce the heat from reaching the earth surface in large amount,as it can be very dangerous.