Ecology Calculators (Page 4)
Carbon footprint, energy use and other environmental calculations.
Distribution-Uniformity Calculator
Compute Low Quarter Average, Overall Average, Du Pct from Low Quarter Average, Overall Average, Du Pct. Free online Hong Kong ecology calculator.
Effective-Rainfall Calculator
Compute Rainfall mm, Factor, Eff Rain mm from Rainfall mm, Factor, Eff Rain mm. Free online Hong Kong ecology calculator.
Field-Capacity Calculator
Compute Gravimetric Pct, Bulk Density, Depth mm, Volumetric Pct, Storage mm from Gravimetric Pct, Bulk Density, Depth mm, Volumetric Pct. Free online Hong Kong ecology calculator.
Infiltration-Rate Calculator
Compute K, A, Time Minutes, Cum Infiltration, Infiltration Rate from K, A, Time Minutes, Cum Infiltration. Free online Hong Kong ecology calculator.
Water-Productivity Calculator
Compute Yield Amount, Water Used, Wp from Yield Amount, Water Used, Wp. Free online Hong Kong ecology calculator.
Leaching-Requirement Calculator
Compute Ecw, Ece, Lr, Lr Pct from Ecw, Ece, Lr, Lr Pct. Free online Hong Kong ecology calculator.
Irrigation Efficiency
Enter water stored in the root zone and water actually applied to compute irrigation efficiency = (stored ÷ applied) × 100%, assessing system water loss and improvement room.
Crop Water Stress Index (CWSI)
Enter measured canopy-air temperature difference dT and the well-watered lower baseline dT_ll and non-transpiring upper baseline dT_ul to compute CWSI = (dT − dT_ll) ÷ (dT_ul − dT_ll), judging water-deficit level and irrigation timing.
Christiansen Uniformity Calculator
Enter four measurement-point application depths; the tool computes Christiansen's uniformity coefficient CU = 100·(1 − Σ|xᵢ−x̄| ÷ (n·x̄)), assessing sprinkler/micro-irrigation water uniformity.
Soil-Organic-Carbon Calculator
Compute Soc Pct, Bulk Density, Depth cm, Stock T per ha from Soc Pct, Bulk Density, Depth cm, Stock T per ha. Free online Hong Kong ecology calculator.
Canopy Cover Calculator
Enter single-plant canopy diameter, row spacing, and plant spacing to compute canopy cover % = circular canopy projection area ÷ (row spacing × plant spacing) × 100%, assessing shading, light interception, and ground cover.
Water-Holding-Capacity Calculator
Compute Field Capacity Volume Pct, Depth mm, Storage mm from Field Capacity Volume Pct, Depth mm, Storage mm. Free online Hong Kong ecology calculator.