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Biogenic link to the recent increase in atmospheric methane over India

OAR@ICRISAT

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Relation http://oar.icrisat.org/11907/
https://doi.org/10.1016/j.jenvman.2021.112526
doi:10.1016/j.jenvman.2021.112526
 
Title Biogenic link to the recent increase in atmospheric methane over India
 
Creator Singh, A
Kuttippurath, J
Abbhishek, K
Mallick, N
Raj, S
Chander, G
Dixit, S
 
Subject Agriculture
Climate Change
 
Description Methane (CH4) is a prominent Greenhouse Gas (GHG) and its global atmospheric concentration has increased
significantly since the year 2007. Anthropogenic CH4 emissions are projected to be 9390 million metric tonnes by
2020. Here, we present the long–term changes in atmospheric methane over India and suggest possible alternatives
to reduce soil emissions from paddy fields. The increase in atmospheric CH4 concentrations from 2009 to
2020 in India is significant, about 0.0765 ppm/decade. The Indo-Gangetic Plains, Peninsular India and Central
India show about 0.075, 0.076 and 0.074 ppm/decade, respectively, in 2009–2020. Seasonal variations in CH4
emissions depend mostly on agricultural activities and meteorology, and contribution during the agricultural
intensive period of Kharif–Rabi (i.e., June–December) is substantial in this regard. The primary reason for
agricultural soil emissions is the application of chemical fertilizers to improve crop yield. However, for rice
farming, soil amendments involving stable forms of carbon can reduce GHG emissions and improve soil carbon
status. High crop production in pot culture experiment resulted in lower potential yield–scaled GHG emissions in
rice with biochar supplement. The human impact of global warming induced by agricultural activities could be
reduced by using biochar as a natural solution.
 
Publisher Elsevier
 
Date 2021-04
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://oar.icrisat.org/11907/1/Paper-Methane-JEnvironManag-Published.pdf
Singh, A and Kuttippurath, J and Abbhishek, K and Mallick, N and Raj, S and Chander, G and Dixit, S (2021) Biogenic link to the recent increase in atmospheric methane over India. Journal of Environmental Management, 289. pp. 1-10. ISSN 0301-4797