differentiation between S06 and S29 - feedback sought

[meganrwong]

at present we are only using these S06 terms -
concentration
concentration ratio
presence or absence of

what could have been properties, have been moved to S29. These include complex properties that are for example calculation such as indices, ratios etc, proxies etc. In general, those properties that do not make sense to break down under the model. For example, there are some cases that have 'concentration' and 'ratio' in the S29 term, and 'percentage'. It did not make sense to break these out, the community is used to seeing these things as they are this way.

extract of some of our S29 looks like -

moisture content
Electrical conductivity (EC)
Estimated soluble salts
Ionic strength
Redox potential (Eh)
pH
pH reactivity class
pH change (Δ pH)
total organic carbon (TOC) to total soil nitrogen (TSN)
Anion storage capacity (previously P retention)
Phosphate Sorption Index (P sorption index)
P buffer index (PBI)
Equilibrium phosphorus concentration (EPC)
Phosphorus buffering capacity (PBC)
P saturation ratio
Colwell-P/PBI (ColP) ratio
Electrical conducivity (EC)
cation exchange capacity (CEC)
Exchange acidity
Effective cation exchange capacity (ECEC)
Base saturation percentage (BSP)
Calcium to Magnesium (Ca2+/Mg2+)
extractable Calcium (Ca)
soluble Sulfur (S)
Total Sulfidic Acidity (TSAD-B)
Residual Quick Neutralising Capacity (RQNCD-B)
lime requirement for drain spoil

However, perhaps some of these should be properties under S06 (or the, are 'compound properties' under I-ADOPT.

For example:

• pH and Electric Conductivity are in S06
• total alkalinity is under S06 http://vocab.nerc.ac.uk/collection/S06/current/S0600283/ however there is a 'total alkalinity determination' in S29 http://vocab.nerc.ac.uk/collection/S29/current/PE001367/

note - we decided it was not great to use terms 'determination' and 'measurement' in S29 so have not done so

[meganrwong]

related to #nvs-vocabs/P01/issues/208