Description
Allocate cost*sharedFraction to crops and trees in proportion to their supplied years.
Agroforestry cost and benefit terms depend on labor exposure, shared allocations, grants and discount periods. Person-hours differ from elapsed crew-hours, and a single discounted benefit differs from a complete investment appraisal. Prices, allocations and discount rates must be supplied on compatible bases.
Allocate cost*sharedFraction to crops and trees in proportion to their supplied years.
When to use this tool
Use Timber Crop Rotation Year Cost Proration when checking the stated tree/crop cost, labor or discounted-benefit contribution.
How to use the tool and how it works
- Enter cost, cropYears, treeYears, sharedFraction. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read cropAllocated, treeAllocated. Use the output convention below.
Require nonnegative cost and year quantities with positive combined years, plus sharedFraction in [0,1]. Allocate cost*sharedFraction to crops and trees in proportion to their supplied years.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| cost | Cost | Required. Finite number; minimum 0. |
| cropYears | Crop Years | Required. Finite number; minimum 0. |
| treeYears | Tree Years | Required. Finite number; minimum 0. |
| sharedFraction | Fraction of total cost being apportioned; the unshared remainder is not allocated by these outputs. Unit: 1. | Required. Finite number; minimum 0; maximum 1. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| cropAllocated | Crop Allocated | Required. Finite number. |
| treeAllocated | Tree Allocated | Required. Finite number. |
{
"input": {
"cost": 1000,
"cropYears": 2,
"treeYears": 8,
"sharedFraction": 0.5
},
"output": {
"cropAllocated": 100,
"treeAllocated": 400
}
}Limitations and assumptions
- Only the shared cost fraction is allocated; this is not a discounted cash-flow analysis or a contractual entitlement.
- 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
Build a complete budget with verified costs, timing, uncertainty and applicable agreements for actual investment, labor or grant decisions.
References
Similar or alternative tools
- Agroforestry Establishment Cost Tree Share
Return trees*perTree+sharedCost-grant and its per-tree equivalent.
- Agroforestry Harvest Labor One Component
Person-hours=units*minutes/60; elapsed hours divide by workers; cost multiplies person-hours by hourlyCost.