Methane emission from rice paddy soils, aerotolerance of methanogens and global thermal warming

N. Chakraborty, G. M. Sarkar and S. C. Lahiri
Additional contact information
N. Chakraborty: Institute of Microbial Technology (IMTECH)
G. M. Sarkar: Ranaghat College, Ranaghat, Nadia
S. C. Lahiri: University of Kalyani, Kalyani

Environment Systems and Decisions, 2000, vol. 20, issue 4, 343-350

Abstract: Abstract In vitro methane emissions from different rice paddy soils and algal mats were studied under anoxic and atmospheric conditions. Methane production from rice paddy soils cultivating different strains of rice was found to be appreciable under anoxic conditions, but considerably reduced under atmospheric conditions, and dependent on rice cultivars (strains). A contradictory result was obtained with a Gobindabhog cultivated rice field (a strain of rice with aroma), where methane yield under anoxic was greater than that under atmospheric conditions. The results indicated aerotolerance of methanogens or the possible existence of microaerophilic methanogens. The results from algal mats corroborated these findings. Methane has been considered to be an important greenhouse gas contributing significantly to global thermal warming (GTW). Flooded rice paddy fields have been considered to be a most prominent source of abiogenic methane emission, though considerable uncertainty exists regarding the true estimates of methane emission. Factors affecting methane emission and its abatement have been examined. In spite of increasing methane emission, rice cultivation leads to enormous utilization of the ‘green house gas’ carbon dioxide and release of oxygen to the atmosphere. Thus, the contribution of methane to GTW (from rice paddy cultivation) is more than compensated by carbon dioxide absorption. Appropriate steps have been suggested for the reduction of methane emissions, the most important of which is the restoration of methane sinks.

Keywords: atmospheric; global thermal warming; methane emission; microaerophilic; rice paddy soils (search for similar items in EconPapers)
Date: 2000
References: Add references at CitEc
Citations: View citations in EconPapers (2)

Downloads: (external link)
http://link.springer.com/10.1023/A:1006734101607 Abstract (text/html)
Access to the full text of the articles in this series is restricted.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:spr:envsyd:v:20:y:2000:i:4:d:10.1023_a:1006734101607

Ordering information: This journal article can be ordered from
https://www.springer.com/journal/10669

DOI: 10.1023/A:1006734101607

Access Statistics for this article

More articles in Environment Systems and Decisions from Springer
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().