Nutrient Cycling in Agroecosystems

, Volume 58, Issue 1, pp 321–326

Influence of Azolla on CH4 Emission from Rice Fields


  • Z. Ying
    • Institute of Applied EcologyAcademia Sinica
  • P. Boeckx
    • Ghent University
  • G.X. Chen
    • Institute of Applied EcologyAcademia Sinica
  • O. Van Cleemput
    • Ghent University

DOI: 10.1023/A:1009871308968

Cite this article as:
Ying, Z., Boeckx, P., Chen, G. et al. Nutrient Cycling in Agroecosystems (2000) 58: 321. doi:10.1023/A:1009871308968


Azolla is an aquatic fern that has been used successfully as a dual crop with wetland rice. Rice fields are a major source of atmospheric CH4, which is an important greenhouse gas. In this study, field and laboratory experiments showed that growing Azolla as a dual crop could enhance CH4 emission from rice fields. In pot experimen indications showed that Azolla could mediate CH4 transport from the floodwater of a rice soil into the atmosphere. It was also found that due to the presence of Azolla, chemical soil properties could be developed, stimulating CH4 production and decreasing in situ CH4 removal.

Azollarice fieldChinamethane emissionmethane productionmethane oxidation

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© Kluwer Academic Publishers 2000