At the first sight, LI-COR sensors are more precise but EGM-5 is more suitable for field work because EGM-5 is waterproof, can store data, has internal pump and accumulator and can work in autonomous mode (while LI-COR is just a sensor without pump, data storage and etc.). Perhaps, EGM brakes down more often and has shorter life time than LI-COR.

The task is to measure soil CO2 fluxes using chambers in different ecosystems.

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