Figure 3 | Scientific Reports

Figure 3

From: Ecological parameter reductions, environmental regimes, and characteristic process diagram of carbon dioxide fluxes in coastal salt marshes

Figure 3

Plot of the dimensionless BGC number with the response dimensionless LUE number, revealing collapse of different variables on the generalized characteristics process diagram for wetland CO2 fluxes. LUE refers to the dimensionless light use efficiency number \(\left( {\frac{{NEE_{CO2,uptake} }}{PAR}} \right)\) and BGC refers to dimensionless biogeochemical number \(\left( {\frac{{ST \cdot c_{p} \cdot SS}}{{P_{a} }}} \right)\). NEECO2,uptake, PAR, ST, SS, cp, and Pa refer, respectively, to daytime net uptake fluxes of CO2, photosynthetically active radiation, soil temperature, porewater salinity, specific heat of wet soil, and atmospheric pressure. The units of NEECO2,uptake and PAR are in µmol/m2/s, ST is in Kelvin, SS is in g/m3, cp is in J/g/K, and Pa is in g/m/s2. The value of constant cp = 1.48 J/g/K.

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