Review and future perspective of AsiaFlux

AsiaFlux (http://www.asiaflux.net/) was established in 1999 as the Asian arm of FLUXNET, worldwide flux network, to develop collaborative research and data sets on cycles carbon water key ecosystems Asia, organize workshops training current related global change themes, cultivate next generation scientists be informed leaders with skills perspectives. Over past 20 years, has developed into a regional network composed 28 member countries. More than 100 observation towers were built covering diverse terrestrial ecosystems. Researchers have made great progress observation, remote-sensing ecosystem modeling, outstanding contribution quantifying balance understanding functions will continue lead flux-related research, contribute achievement sustainable development provide an open forum for both field researchers (data providers) / modeling users) encourage their communication collaboration. held special workshop 2019 Takayama, Japan, celebrate 20th anniversary support from Gifu University National Institute Environmental Studies (NIES). In workshop, session organized look back project future AsiaFlux. Seven speakers invited talked about principal topics AsiaFlux: 1) dioxide (CO2) 2) energy fluxes, 3) soil respiration, 4) volatile organic compound exchange, 5) processes, 6) remote sensing, 7) biosphere modeling. Based these presentations, seven review papers planned. This issue is five fluxes (Kang Cho, 2021), respiration (Sha et al., (Tani Mochizuki, processes (Chang 2021) (Ito Ichii, 2021). The other two eddy CO2 sensing presented soon this journal, Journal Agricultural Meteorology. We are grateful all authors impressive editorial board Society Meteorology Japan behalf