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Vuichard

v11	v12
33	33
34	34	* '''Calculation of the anaerobic balloon - anvf'''. The two constants a and b are not specified in Li et al., 2000. OCN uses a=0.85 and b=1 without mention to any publication (see [source:branches/orchidee-N/ORCHIDEE/src_stomate/stomate_soilcarbon.f90@19#L711, here]). As mention in the code of OCN these parameters have been estimated temporarily and need to be tuned. Might be good to find the values used in DNDC...
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	36	* '''Ammonium adsorption'''. It is based on Li et al. 1992, JGR, Table 4 using NH4 defined as the NH4+ concentration in the soil liquid, gN kg-1 soil (p. 9774) but Zhang et al. (2000) use also the same equation but in this paper NH4+ is defined as the [NH4+] in a soil layer in kgN ha-1. In OCN, NH4 seems defined as molNH4 m-3 of water ([source:branches/orchidee-N/ORCHIDEE/src_stomate/stomate_soilcarbon.f90@19#L742, see here]. It would be good to clarify this by checking what looks like the equation depending of the units we use.
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