TN-97 : Acid rain and its implications

Abstract

Acid rain, generally described as a European and North American problem caused largely by anthropogenic emissions of the oxides of sulphur and nitrogen during burning of fossil fuels, is spreading to the developing countries of the world. Although developing countries consume only one fifth of the world's commercial energy, the share is growing. The primary reason for concern about acid deposition is that it acidifies streams and lakes on coarse sandy soils low in lime. The environmental concern of acid deposition includes the effects on terrestrial ecosystems, aquatic ecosystems, monuments and construction material etc.

In the present report, a review has been made on sources of acid gases, chemistry and transport of acid deposition, effects of acid rain on terrestrial and aquatic ecosystems Procedures for regional acidification studies have also been presented The spread of acid rain over India and the possible implications is focused upon. Studies carried out in India point out that the problem of acid rain in India is still localized and the alkaline soil dust prevents the spread of acid rain in India.