Ecology Calculators (Page 6)
Carbon footprint, energy use and other environmental calculations.
Gypsum-Requirement Calculator
Compute Initial Esp, Target Esp, Cec, Bulk Density, Depth cm, Gypsum T per ha from Initial Esp, Target Esp, Cec, Bulk Density. Free online Hong Kong ecology calculator.
Soil-Water-Deficit Calculator
Compute Field Capacity, Current Moisture, Root Depth mm, Deficit mm from Field Capacity, Current Moisture, Root Depth mm, Deficit mm. Free online Hong Kong ecology calculator.
Nitrogen-Mineralization Calculator
Compute Organic Matter kg ha, Nitrogen Fraction, Mineralization Rate, Total Organic N, Mineralized N from Organic Matter kg ha, Nitrogen Fraction, Mineralization Rate, Total Organic N. Free online Hong Kong ecology calculator.
Soil Cation Ratio
Enter exchangeable Ca, Mg, K (cmol(+)/kg) to compute the Ca:Mg and Mg:K ratios, assessing base balance and nutrient antagonism risk.
Runoff Curve Number (CN)
Enter rainfall and curve number CN to compute potential retention S, initial abstraction Ia and runoff Q (SCS-CN method), estimating storm runoff.
Crop Yield Response to Water (Ky)
Enter yield response factor Ky, actual evapotranspiration ETa and maximum ETm to compute evapotranspiration deficit, relative yield loss and relative yield (FAO-33 Ky model), assessing drought impact on crops.
Soil-Temperature-Depth Calculator
Compute Surface Amplitude, Depth, Damping Depth, Amplitude At Depth, Phase Lag Rad, Phase Lag Fraction Of Period from Surface Amplitude, Depth, Damping Depth, Amplitude At Depth. Free online Hong Kong ecology calculator.
Soil-Heat-Flux Calculator
Compute Thermal Conductivity, Surface Temperature, Depth Temperature, Depth m, Heat Flux Wm2 from Thermal Conductivity, Surface Temperature, Depth Temperature, Depth m. Free online Hong Kong ecology calculator.
Readily-Available-Water Calculator
Compute Field Capacity, Wilting Point, Root Depth m, Depletion Fraction, Total Available Water mm, Readily Available Water mm from Field Capacity, Wilting Point, Root Depth m, Depletion Fraction. Free online Hong Kong ecology calculator.
Blaney–Criddle Calculator
Enter the daytime-hour factor p and the mean temperature T to compute the Blaney–Criddle reference evapotranspiration ET = p × (0.46T + 8.13) (mm/day), estimating crop water need from temperature and daylight only.
Priestley-Taylor Calculator
Compute Alpha, Slope Delta, Psychrometric Gamma, Available Energy, Delta Factor, Et from Alpha, Slope Delta, Psychrometric Gamma, Available Energy. Free online Hong Kong ecology calculator.
Saturation-Vapor-Pressure Calculator
Compute Temperature C, Saturation Vapor Pressure from Temperature C, Saturation Vapor Pressure. Free online Hong Kong ecology calculator.