Methods of Ecosystem Analysis - Water
 

Calcium and Magnesium Inputs in Precipitation

Calcium
Total volume of rain falling on a hectare = height of rain in a year * 1 hectare
     46.73in * (2.54 cm/in) * (1 m/100 cm) * (10000 m^2/ha)* (1 ha)  =       11869.42 m^3
Total amount of calcium in the rainfall = concentration * volume
     0.071 mg/L * (11869.42 cu m) * (100 cm/m)^3 * (1 mL/cc) * (1 L/ 1000 mL) * (1 kg/10^6 mg)     0.84 kg/ha/yr

 
Magnesium
Total volume of rain falling on a hectare = height of rain in a year * 1 hectare
     46.73in * (2.54 cm/in) * (1 m/100 cm) * (10000 m^2/ha)* (1 ha)  =       11869.42 m^3
Total amount of magnesium in the rainfall = concentration * volume
     0.026 mg/L * (11869.42 cu m) * (100 cm/m)^3 * (1 mL/cc) * (1 L/ 1000 mL) * (1 kg/10^6 mg) =
0.31 kg/ha/yr
 
Notes:

  • Calcium and Magnesium concentrations used in these calculations were taken from the weighted average of concentrations in open funnel precip.
  • Na inputs not calculated due to lack of data and wide variance of existing data


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