Description
Return alley-excluded and that usable width divided by row+alley.
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.
Return alley-excluded and that usable width divided by row+alley.
When to use this tool
Use Tree Row Crop Alley Share when checking the stated ideal tree-row, shade, buffer or area convention.
How to use the tool and how it works
- Enter rowWidth, alleyWidth, excludedAlleyWidth. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read usableAlleyWidth, alleyShare. Use the output convention below.
Require nonnegative row and alley widths with positive combined width, and an excluded width within the alley. Return alley-excluded and that usable width divided by row+alley.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| rowWidth | Row Width | Required. Finite number; minimum 0. |
| alleyWidth | Alley Width | Required. Finite number; minimum 0. |
| excludedAlleyWidth | Excluded Alley Width | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| usableAlleyWidth | Usable Alley Width | Required. Finite number. |
| alleyShare | Alley Share | Required. Finite number. |
{
"input": {
"rowWidth": 2,
"alleyWidth": 8,
"excludedAlleyWidth": 2
},
"output": {
"usableAlleyWidth": 6,
"alleyShare": 0.6
}
}Limitations and assumptions
- The denominator includes the full repeated strip; no actual field layout or ecological response is inferred.
- 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
- Alley Crop Netarea Tree Buffer Factor
Return rows*length*2*buffer as excluded area and subtract it from field area.
- Silvopasture Tree Cover Open Area Share
Return total-tree-other+shared and divide by total.