Coarse Woody Debris Volume Calculator
Named line-intersect coarse deadwood volume estimator π²Σd²/(8L)×10000, measured diameters/metres and transect exposure, distinct from complete-log frustum inventory. Caller independently verifies units, applicability and matching conditions; no operational recipe, safety certification, causal efficacy or legal/resource classification is inferred.
Description
Line-intersect sampling can estimate downed-wood volume from measured diameters and total transect length.
Line-intersect sampling can estimate downed-wood volume from measured diameters and total transect length.1
The conversion assumes the independently verified sampling geometry represented by the adopted estimator. Use this tool to calculate coarse woody debris volume from the supplied measurements and assumptions.
When to use Coarse Woody Debris Volume Calculator
Use this tool to calculate coarse woody debris volume from the supplied measurements and assumptions. Establish the species/site, survey protocol, units, sampled area or exposure, and the independently chosen reference or model.
How to use Coarse Woody Debris Volume Calculator and understand its results
- Establish the species/site, survey protocol, units, sampled area or exposure, and the independently chosen reference or model.
- Enter observedIntersectDiametersM, observedTransectLengthsM, callerUnbiasedLineIntersectProtocolVerified, using the field meanings and rules below, then run the tool.
- Read lineIntersectCoarseDeadwoodM3Ha. Interpret the fields using their units, signs and evidence conventions below.
- If input validation fails, correct the reported field and run again. Before applying the result, check reference scope, model assumptions and any missing evidence or placeholder values.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| observedIntersectDiametersM | Observed intersect diameters m | list of number | Required |
| observedTransectLengthsM | Observed transect lengths m | list of number | Required |
| callerUnbiasedLineIntersectProtocolVerified | Caller unbiased line intersect protocol verified | boolean | Required |
Enter nonnegative intersection diameters in meters and positive transect lengths in meters, with callerUnbiasedLineIntersectProtocolVerified=true. The diameter and length lists need not align: they describe intersections and transects respectively. Apply 10000π²Σdiameter²/(8ΣtransectLength) and return m³/ha; a positive total transect exposure is necessary for a finite result. No orientation correction or protocol verification occurs.
volumeM³PerHa=10000×π²×ΣdiameterM²/(8×ΣtransectLengthM) Use the exact units, boundary rules, ordering and missing-evidence conventions above.
| Output field | Meaning | Value type |
|---|---|---|
| lineIntersectCoarseDeadwoodM3Ha | Line Intersect Coarse Deadwood M3 Ha; follow the units, sign, ordering and evidence convention stated above | number |
{
"input": {
"observedIntersectDiametersM": [
0.1,
0.2
],
"observedTransectLengthsM": [
10,
20
],
"callerUnbiasedLineIntersectProtocolVerified": true
},
"output": {
"lineIntersectCoarseDeadwoodM3Ha": 20.56167583560283
}
}Limitations and assumptions
The conversion assumes the independently verified sampling geometry represented by the adopted estimator. Interpretation depends on the units, sampling scope and exact model described above.
All listed fields require explicit values. Unexpected fields, incorrect types, nonfinite numbers and sparse evidence arrays fail validation; the specific bounds and alignment requirements are stated above. Extremely large inputs or outputs can also be rejected. An input error is distinct from a successful result reporting false, no matches or missing evidence.
Alternative or Complementary methods
Use Down Wood Cover Percent For Small Mammals for this related task: Downed-wood cover is the union of its independently measured footprints within a plot.
Use Standard Cord 4x4x8 Stack Measure Calculator when its separate inputs and assumptions fit the question: A cord is a stacked-volume convention, so the air spaces between pieces are part of its volume.
References
-
Coarse Woody Debris Volume Calculator — tool.io
Similar or alternative tools
- Down Wood Cover Percent For Small Mammals
Downed-wood cover is the union of its independently measured footprints within a plot.
- Standard Cord 4x4x8 Stack Measure Calculator
A cord is a stacked-volume convention, so the air spaces between pieces are part of its volume.