Among the most polluted cities of the world, Delhi enjoys the dubious distinction of topping the list.
It is not only the most polluted city in India, but the whole world. The reason are quite obvious. Delhi has developed and expanded phenomenally at the great extend. With the ever increasing population, the number of vehicles plying on the road has also multiplies manifold. Growing number of industries, and infrastructure are emitting poisonous gases is another contributory factor for air pollution and environment degradation. The discharge of chemical waste into the Yamuna has polluted the water of the river. It is now unfit even for animals.
Main causes of air pollution in Delhi:-
Pollution caused by the traffic menace in Delhi is another reason contributing to this air pollution and smog. The air quality index has reached ‘severe’ levels. Vehicular emission is increasing the hazardous effects of air pollution and smog. The Central Pollution Control Board (CPCB) and the National Environmental Engineering Research Institute (NEERI) have declared vehicular emission as a major contributor to Delhi’s increasing air pollution.
As the winter season sets in, dust particles and pollutants in the air become unable to move. Due to stagnant winds, these pollutants get locked in the air and affect weather conditions, resulting in smog.
Another reason of air-pollution is over-population in the capital. Over-population only adds up to the various types of pollution, whether it is air pollution or noise pollution.
Investing less on public infrastructure is another reason of air pollution. In India, investment in public transport and infrastructure is low which leads to congested roads, and hence air pollution.
Large scale construction in Delhi-NCR is another culprit that is increasing dust and pollution in the air. Considering the dipping air quality, a number of construction sites have stalled work, as directed by the Delhi Government.
Industrial pollution and garbage dumps are also increasing air pollution and building-up smog in the air.
Despite the ban on cracker sales, firecrackers were a common sight this Diwali. It may not be the top reason for this smog, but it definitely contributed to its build up.
So, to decline the pollution immediate steps should be taken to check carbonisation. Tree- plantation and preservation should be given top priority. Mass public awareness has to be built. Only then we can control the demon of pollution.