CO₂ and Water Vapor Flux Measurement by Eddy Covariance Method in a Paddy Field in Korea
2005
Lee, J.T. (National Institute of Agricultural Science and Technology, RDA, Suwon, Republic of Korea), E-mail: jtlee279@rda.go.kr | Lee, Y.S. (National Institute of Agricultural Science and Technology, RDA, Suwon, Republic of Korea) | Kim, G.Y. (National Institute of Agricultural Science and Technology, RDA, Suwon, Republic of Korea) | Shim, K.M. (National Institute of Agricultural Science and Technology, RDA, Suwon, Republic of Korea)
This study was conducted to measure and understand the exchange of CO₂ and water in a rice canopy. Eddy covariance system was installed on a 10m tower along with other meteorological instruments. CO₂ flux and surface energy balance were measured throughout the whole growing season in 2003 over a typical paddy field in Icheon, Korea. During the early growth stage in May and June, most of net radiation was partitioned to latent heat flux with daytime Bowen ratio of 0.3 to 0.7. Evapotranspiration (i.e., daily integrated latent heat flux) typically ranged from 3 to 4 mm d-¹, with even higher rates on sunny days.
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