Leaf sodium content per leaf area

Formal name:  leaf sodium content per leaf area
Local identifier:  TOP479
Synonym Term:  leaf Na content per area
Related Term:  leaf Na content
Related Term:  leaf Na concentration
Definition:  The ratio of the quantity (SEP:quantity) of sodium (CHEBI:sodium atom) in the leaf (PO:leaf) or component thereof, i.e. leaf lamina or leaflet (PO:leaf lamina, PO:leaflet) per respective area (TOP:leaf area, TOP:leaf lamina area, TOP:leaflet area)
Formal Unit:  mass unit / area unit or amount unit / area unit

Comment:  The quantity of sodium can be expressed either as a mass (with mass unit, e.g. gram) or as an amount (with amount unit, e.g. mol). The term concentration is polysemic and we suggest to not use it in this context.
Reference:  Eric Garnier, Jens Kattge, Stefan Klotz, Ingolf Kühn, Ulrike Stahl


------------------------------------------------