Natural Regeneration Stock Minimum Count Tool
Audit field regeneration counts against caller local minimum density, retaining patch-level shortfall rather than hiding unstocked plots in the pooled density; not legal stocking compliance.
Description
Regeneration stocking can vary between plots even when pooled density is adequate.
Regeneration stocking can vary between plots even when pooled density is adequate. Local shortfall flags preserve patch-level information.1
Audit field regeneration counts against caller local minimum density, retaining patch-level shortfall rather than hiding unstocked plots in the pooled density; not legal stocking compliance.
When to use Natural Regeneration Stock Minimum Count Tool
Use this tool to audit field regeneration counts against caller local minimum density, retaining patch-level shortfall rather than hiding unstocked plots in the pooled density; not legal stocking compliance.
Gather the tree inventory, plot measurements or model parameters. Check diameter, area, time and moisture conventions; keep paired observations aligned.
How to use Natural Regeneration Stock Minimum Count Tool and understand its results
- Gather the tree inventory, plot measurements or model parameters. Check diameter, area, time and moisture conventions; keep paired observations aligned.
- Enter plotRegenerationCounts, plotAreasHa, callerMinimumDensityPerHa using the field table and calculation rules, then run the tool.
- Read pooledRegenerationPerHa, plotBelowCallerMinimumFlags, belowMinimumPlotFraction. The explanation below defines the units, signs, ordering and any flags or placeholder values.
- If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.
| Input field | Meaning | Value type; see rules below | Requirement |
|---|---|---|---|
| plotRegenerationCounts | Plot regeneration counts | list of number | Required |
| plotAreasHa | Plot areas ha | list of number | Required |
| callerMinimumDensityPerHa | Caller minimum density per ha | number | Required |
Pair nonnegative integer counts with positive plot hectares and a nonnegative caller minimum. Return pooled stems/ha, binary strict local shortfalls and their unweighted plot fraction. Equality meets the criterion.
Paired lists must be nonempty and have equal lengths.
pooled density=total regeneration count/total ha; local shortfall=count/plot ha<minimum Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| pooledRegenerationPerHa | Pooled regeneration per ha | number |
| plotBelowCallerMinimumFlags | Plot below caller minimum flags | list of number |
| belowMinimumPlotFraction | Below minimum plot fraction | number |
{
"input": {
"plotRegenerationCounts": [
2,
4,
0
],
"plotAreasHa": [
0.01,
0.02,
0.01
],
"callerMinimumDensityPerHa": 100
},
"output": {
"pooledRegenerationPerHa": 150,
"plotBelowCallerMinimumFlags": [
0,
0,
1
],
"belowMinimumPlotFraction": 0.3333333333333333
}
}Limitations and assumptions
The threshold is supplied and the plot fraction is not area weighted. No legal stocking verdict is inferred.
Numeric inputs and returned numeric values must be finite; an unrepresentable returned value produces an error. Numeric lists are limited to 100,000 entries; the rules above may require smaller limits. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.
Alternative or Complementary methods
Use First Season Seedling Survival Percent: Separate first-season tagged survival among located seedlings from whole-cohort bounds for unlocated tags; missing plants are not forced dead or alive. For a complementary task, use Regeneration Delay Year Counter: Count observed establishment delay or right-censored time since harvest at last survey, explicitly preserving nondetection; supplied unused establishment year is not treated as an event when unobserved.
References
Similar or alternative tools
- First Season Seedling Survival Percent
Separate first-season tagged survival among located seedlings from whole-cohort bounds for unlocated tags; missing plants are not forced dead or alive.
- Regeneration Delay Year Counter
Count observed establishment delay or right-censored time since harvest at last survey, explicitly preserving nondetection; supplied unused establishment year is not treated as an event when unobserved.