Distribution of atmospheric reactive nitrogen in Indo-Gangetic Plains (India)

Saumya Singh1, Anshu Sharma2 and Prof. U.C. Kulshrestha3

In India, most of the human population lives in rural areas. People depends on agriculture products to meet the demand of food supply. In order to get higher yield of agriculture and food product, increased practice of fertilizer application has added extra burden of nutrients especially, the reactive nitrogen (Nr) species viz NH3 and NOx. Growing energy demands has resulted in increased emissions of NOx from coal combustion in thermal power plant and the petroleum combustion in transport sector. In addition, biomass burning in traditional cooking and heating has become significant source of NH3 and NOx in Indian region.

Significance of the study lies in the fact that increasing Nr emissions have adverse impact on human health, plant, soil and water bodies directly and to see the effect, knowledge of emission and deposition for Nr at different sites. Hence, the selection of the sites for present study was done very carefully. Indo-Gangetic plains, which is most productive, fertile and most populated region of India were selected to study the reactive nitrogen deposition. It has two extreme kind of sites like Delhi, a typical urban site and on other hand a village with agricultural activities as rural site.

 Atmospheric abundance of major inorganic (Nr) species in gaseous phase i.e NH3 and NO2 and in particulate phase (NH4+ and NO3-) has been measured for one year, on monthly basis. Study, presents spatial and temporal variation of major reactive nitrogen species at representative sites of most populated and fertile part from India. During the presentation, a brief scenario of Nr deposition research in India, will also be discussed in details at the conference.

 

1School of Environmental Sciences Jawaharlal Nehru University, New Delhi 110067 INDIA, saumya.8singh@gmail.com
2School of Environmental Sciences Jawaharlal Nehru University, New Delhi 110067 INDIA, sweetanshu28@gmail.com
3School of Environmental Sciences Jawaharlal Nehru University, New Delhi 110067 INDIA, umeshkulshrestha@gmail.com