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Methane And Nitrous Oxide Emissions From Subtropical Rice Agriculture In China, M. A. K. Khalil, Martha J. Shearer, R. A. Rasmussen, Li Xu, Jin-Luan Liu

Environmental Science and Management Faculty Publications and Presentations

Emissions of methane and nitrous oxide, two significant greenhouse gases, were measured from rice fields at Qingyuan in Guangdong Province, China. The region has a subtropical climate which allows two crops of rice to be grown every year. The prevailing agricultural practices create a complex interaction between factors known to have a major effect on methane and nitrous oxide emissions from rice fields, namely, intermittent flooding and use of organic fertilizers. In this region, the farmers depend on nitrogen fertilizers and, at least in recent years, have only intermittently flooded their fields during the growing seasons. These factors tend to …