Subject | Accepted deviations and errors | Attributed errors | Possible errors | Tolerance limit (%) |
Lot / Sample plot | ||||
Surface area of strata (map verification) | Deviation ≤ ± 5% | 0 | Number of strata | 5% |
Deviation > ± 5% | 1 | |||
Positioning of sample plot (in the field – with satellite geolocation; if the sample plot has not moved compared to the survey plan) | Distance ≤ ± 10 m | 0 | Number of sample plots | 9% |
Distance > 10 m | 1 | |||
Positioning of the sample plot group (in the field with satellite geolocation; if the sample plot has not moved compared to the survey plan) | Distance ≤ ± 50 cm | 0 | Number of sample plots | 18% |
Distance > 50 cm | 1 | |||
Regeneration - Coefficient of distribution | ||||
Number of stems | DiN = |NbtigeP – NbtigeV| | DiN | Maximum of total of P or total of V | 12% |
Number of stems per species | DiE = |NbtigeP – NbtigeV| (by species) | (DiE–DiN) /2 | Minimum of total of P or total of V | 9% |
Trees > 130 cm in height (commercial) | ||||
Number of stems by species | DiE = |NbtigeP – NbtigeV| (by species) | (DiE – DiN) /2 | Minimum of total of P or total of V | 8% |
Height (3 dominant, codominant, intermediate trees per sample plot) | In softwoods | Total number of observations | 8% | |
Deviation ≤ 1 m | 0 | |||
Deviation > 1 m | 1 | |||
In hardwoods | ||||
Deviation ≤ 10% | 0 | |||
Deviation > 10% | 1 | |||
Number of stems | DiN = |NbtigeP – NbtigeV| | DiN | Maximum of total of P or total of V | 8% |
Number of stems per DBH class (2 cm classes) | DiD = |NbtigeP – NbtigeV| (per DBH class) | (DiD – DiN) /2 | Minimum of total of P or total of V | 8% |
Shrub strata > 130 cm in height (non-commercial) | ||||
Number of stems | DiN = |NbtigeP – NbtigeV| | DiN | Maximum of total of P or total of V | 15% |
Number of stems by species | DiE = |NbtigeP – NbtigeV| (by species) | (DiE – DiN) /2 | Minimum of total of P or total of V | 15% |
DSH height (2 cm) | DiD = |NbtigeP – NbtigeV| (per DBH class) | (DiD – DiN) /2 | Minimum of total of P or total of V | 15% |
Stratum of grass, moss, seedling, and trees below 130 cm in height | ||||
Cover class (25% classes) | Same | 0 | Total number of observations | 10% |
Different | 1 | |||
Snags | ||||
Number of snags | DiN = |NbtigeP – NbtigeV| | DiN | Maximum of total of P or total of V | 15% |
Number of snags by condition class | Same | 0 | Total number of observations | 10% |
Different | 1 | |||
Soil | ||||
Volume of sample (measured in the laboratory) | More than 100 cm3 | 1 | Total number of observations | 0% |
Less than 100 cm3 | 0 | |||
Stoniness class | Same | 0 | Total number of observations | 0% |
Different | 1 | |||
Positioning of sub-sample | Distance ≤ ± 50 cm | 0 | Total number of observations | 10% |
Distance > 50 cm | 1 |
Subject | Accepted deviations and errors | Attributed errors | Possible errors | Tolerance limit (%) |
Lot / Sample plot | ||||
Surface area of strata (map verification) | Deviation ≤ ± 5% | 0 | Number of strata | 5% |
Deviation > ± 5% | 1 | |||
Positioning of sample plot (in the field – with satellite geolocation; if the sample plot has not moved compared to the survey plan) | Distance ≤ ± 10 m | 0 | Number of sample plots | 9% |
Distance > 10 m | 1 | |||
Positioning of the sample plot group (in the field with satellite geolocation; if the sample plot has not moved compared to the survey plan) | Distance ≤ ± 50 cm | 0 | Number of sample plots | 18% |
Distance > 50 cm | 1 | |||
Regeneration - Coefficient of distribution | ||||
Number of stems | DiN = |NbtigeP – NbtigeV| | DiN | Maximum of total of P or total of V | 12% |
Number of stems per species | DiE = |NbtigeP – NbtigeV| (by species) | (DiE–DiN) /2 | Minimum of total of P or total of V | 9% |
Trees > 130 cm in height (commercial) | ||||
Number of stems by species | DiE = |NbtigeP – NbtigeV| (by species) | (DiE – DiN) /2 | Minimum of total of P or total of V | 8% |
Height (3 dominant, codominant, intermediate trees per sample plot) | In softwoods | Total number of observations | 8% | |
Deviation ≤ 1 m | 0 | |||
Deviation > 1 m | 1 | |||
In hardwoods | ||||
Deviation ≤ 10% | 0 | |||
Deviation > 10% | 1 | |||
Number of stems | DiN = |NbtigeP – NbtigeV| | DiN | Maximum of total of P or total of V | 8% |
Number of stems per DBH class (2 cm classes) | DiD = |NbtigeP – NbtigeV| (per DBH class) | (DiD – DiN) /2 | Minimum of total of P or total of V | 8% |
Shrub strata > 130 cm in height (non-commercial) | ||||
Number of stems | DiN = |NbtigeP – NbtigeV| | DiN | Maximum of total of P or total of V | 15% |
Number of stems by species | DiE = |NbtigeP – NbtigeV| (by species) | (DiE – DiN) /2 | Minimum of total of P or total of V | 15% |
DSH height (2 cm) | DiD = |NbtigeP – NbtigeV| (per DBH class) | (DiD – DiN) /2 | Minimum of total of P or total of V | 15% |
Stratum of grass, moss, seedling, and trees below 130 cm in height | ||||
Cover class (25% classes) | Same | 0 | Total number of observations | 10% |
Different | 1 | |||
Snags | ||||
Number of snags | DiN = |NbtigeP – NbtigeV| | DiN | Maximum of total of P or total of V | 15% |
Number of snags by condition class | Same | 0 | Total number of observations | 10% |
Different | 1 | |||
Soil | ||||
Volume of sample (measured in the laboratory) | More than 100 cm3 | 1 | Total number of observations | 0% |
Less than 100 cm3 | 0 | |||
Stoniness class | Same | 0 | Total number of observations | 0% |
Different | 1 | |||
Positioning of sub-sample | Distance ≤ ± 50 cm | 0 | Total number of observations | 10% |
Distance > 50 cm | 1 |