Description
Select understoryArea or totalPlotArea and return shadedArea/selected denominator.
Agroforestry geometry separates row widths, root-zone intervals, canopy projections and repeated-strip area bases. Optical shade, optical porosity and a clear machinery corridor are different quantities. Ideal dimensions and supplied overlaps can support bookkeeping without establishing light conditions, aerodynamic shelter or safe access.
Select understoryArea or totalPlotArea and return shadedArea/selected denominator.
When to use this tool
Use Understory Shade Base Flag when checking the stated ideal tree-row, shade, buffer or area convention.
How to use the tool and how it works
- Enter shadedArea, totalPlotArea, understoryArea, useUnderstory. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read shadeFraction, denominator. Use the output convention below.
Require 0<=shadedArea<=understoryArea<=totalPlotArea with both denominator areas positive. Select understoryArea or totalPlotArea and return shadedArea/selected denominator.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| shadedArea | Shaded Area | Required. Finite number; minimum 0. |
| totalPlotArea | Total Plot Area | Required. Finite number; strictly above 0. |
| understoryArea | Understory Area | Required. Finite number; strictly above 0. |
| useUnderstory | Use Understory | Required. Boolean. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| shadeFraction | Shade Fraction | Required. Finite number. |
| denominator | Selected reporting area: understory or total plot; the numerator is shaded understory area. | Required. Finite number. |
{
"input": {
"shadedArea": 20,
"totalPlotArea": 100,
"understoryArea": 40,
"useUnderstory": true
},
"output": {
"shadeFraction": 0.5,
"denominator": 40
}
}Limitations and assumptions
- The denominator policy changes the reported shade share; canopy geometry and actual light levels are not calculated.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Use measured terrain and canopy geometry, appropriate light/flow models and qualified agricultural/engineering assessment for actual layouts and operations.
References
Similar or alternative tools
- Tree Row Crop Alley Share
Return alley-excluded and that usable width divided by row+alley.
- Silvopasture Tree Cover Open Area Share
Return total-tree-other+shared and divide by total.