TB	Total biomass
Pn	Net photosynthetic rate
RCd	Chemical Cd removal
Gs	Stomatal conductance
Ci	Intercellular CO2 concentration
WUE	Water use efficiency
TFCd	Cd transport coefficient
BCFCd	Cd concentration coefficient
Cp	Capacitance
R	Resistance
ICp	Capacitive reactance
IR	Intrinsic resistance
IZ	Intrinsic impedance
IXC	Intrinsic capacitive reactance
IXL	Intrinsic inductive reactance
IWHC	Intracellular water holding capacity
IWHT	Intracellular water holding time
WTR	Water transfer rate
UNF	Nutrient flux per unit area
UAF	Active transport flow of nutrient
NAC	Nutrient active translocation capacity
MA	Metabolic activity
EGC	Electrophysiological growth capacity
ECR	Electrophysiological comprehensive cadmium resistance