ChinaFLUX Training Course 2009 ChinaFLUX is an observation and research network that applies eddy covariance of micrometeorology and chamber as main research methods to carry out long-term and continuous measurements of the exchanges of CO2, H2O and energy between terrestrial ecosystem and atmosphere in China across diurnal, daily, seasonal and inter-annual time scales. As an important part of AsiaFlux, ChinaFLUX has taken the lead of flux observation and research in China and has developed close communication and cooperation with other regional flux networks since its establishment in 2002. With the rapid development of ChinaFLUX, many new flux sites have been set up in China in recent years, which greatly enhanced the intensity of flux research not only in China but also in Asia.