Description
Return lostUnits = impactedArea*conditionFraction, requiredCredits = lostUnits*requiredMultiplier and restoredArea = requiredCredits/creditPerRestoredArea.
Environmental valuation assigns monetary or credit quantities to a defined change using explicit factors. Area prices, exposure damages, income adjustments and ecological equivalences embody different assumptions; multiplying them does not validate those assumptions.
Return lostUnits = impactedArea*conditionFraction, requiredCredits = lostUnits*requiredMultiplier and restoredArea = requiredCredits/creditPerRestoredArea.
When to use this tool
Use Biodiversity Offset Supplied Multiplier Term when checking one declared valuation or equivalence contribution.
How to use the tool and how it works
- Enter impactedArea, conditionFraction, requiredMultiplier, creditPerRestoredArea. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read lostUnits, requiredCredits, restoredArea. Use the output convention below.
Require nonnegative impactedArea and requiredMultiplier, conditionFraction in [0,1] and positive creditPerRestoredArea. Return lostUnits = impactedArea*conditionFraction, requiredCredits = lostUnits*requiredMultiplier and restoredArea = requiredCredits/creditPerRestoredArea.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| impactedArea | Impacted Area | Required. Finite number; minimum 0. |
| conditionFraction | Condition Fraction | Required. Finite number; minimum 0; maximum 1. |
| requiredMultiplier | Supplied credits per condition-adjusted area unit. | Required. Finite number; minimum 0. |
| creditPerRestoredArea | Positive credit units per restored area unit. | Required. Finite number; strictly above 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| lostUnits | Lost Units | Required. Finite number. |
| requiredCredits | Required Credits | Required. Finite number. |
| restoredArea | Restored Area | Required. Finite number. |
{
"input": {
"impactedArea": 10,
"conditionFraction": 0.8,
"requiredMultiplier": 2,
"creditPerRestoredArea": 0.5
},
"output": {
"lostUnits": 8,
"requiredCredits": 16,
"restoredArea": 32
}
}Limitations and assumptions
- The multiplier must convert condition-adjusted area to the chosen credit unit, and the restoration factor is credits per restored area. These supplied equivalences do not establish ecological interchangeability, restoration success or legally acceptable offsets.
- 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 an appropriate empirical model and examine transferability, causal attribution and double counting before interpreting a complete environmental benefit estimate.
References
Similar or alternative tools
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