The Lamasquere station, with ICOS code FR-Lam, is located at 25 km from Toulouse city (southwestern France), in a flat large alluvial valley and on the border of the 'Touch' river. The site is a cropland plot characterized by a maize (Zea mays L.) / winter wheat (Triticum aestivum L.) / maize (Zea mays L.) / winter wheat (Triticum aestivum L.) rotation.