The observation site was a soybean field (55 x 24 m) within the National Institute of Agro-Environmental Technology, Ministry of Agriculture, Forestry and Fisheries.,The field consists of a series of fields of 25 x 80 m (20 a) per plot, with a large plot of 200 x 400 m and a windbreak of about 6 m high.,Soya beans, maize and other crops were grown in the fields adjacent to the field under measurement.,The turbulent fluxes of sensible heat, latent heat and CO2 were measured using the Heat balance Bowen ratio method. The O3 were measured using UV absorption method and Gradient method.
