Introducing a Chaotic Component in the Control System of Soil Respiration

Figure 2

Hypothetical system kinetics of the hidden loop: (1) three carbon pools (the atmosphere, soil and groundwater) are connected through carbon cycles and water cycles, along with the underlining processes associated with CO₂ sinks (green solid circles) and sources (blue solid circles); (2) the inorganic CO₂ change beyond the red rectangle (if excluding influences of groundwater) are driven by evapotranspiration and vapor condenses, while the inorganic CO₂ assignment and ventilation within the red rectangle are largely driven by groundwater recharging/discharging.