The growing requirements to ecosystem science are to reveal mechanistic and integrated understanding on the ecosystem structure and function in various terrestrial ecosystems. The plot scale studies by ecological process research, eddy covariance measurements and mathematical modelling have been providing us with the information ranging from hourly to yearly scales. In order to extend these understandings to the broader spatial scale from plot to landscape and regional scales, remote sensing has a great role to measure the spatial distribution of ecosystems and to monitor the seasonal and yearly changes of the ecosystem structure. This seminar aims to share the current questions on landscape scale ecosystem functioning, and to discuss how we could integrate the disciplines and observational data. [This seminar is partly supported by 21st Century COE program (JSPS) and A3 Foresight Program(JSPS, KOSEF, NSFC)].