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Table 2 nBias (%) distributions of the stand-level GSV estimations across the analysed factors. Objects: S – Suprasl, P – Piensk, M – Milicz, H – Herby, K – Katrynka. *ADR – Age-Dependent Radius

From: Influence of sampling intensity on performance of two-phase forest inventory using airborne laser scanning

Quantiles Sample plot size (m2) Number of sample plots
100 200 300 400 500 ADR*
97.5% 25 17 27 15 24 19 12 19 14 14 15 12 17 11 6 16 10 15 10 6 16 12 13 10 8 15 11 13 11 8 25
Median 7 0 5 0 7 4 2 3 0 0 4 2 2 1 –4 4 2 3 1 –3 6 4 3 2 0 5 2 2 2 –2
2.5% –11 −14 −17 −17 −8 −10 −8 −12 −11 −10 −8 −8 −10 −8 −12 −6 −6 −7 −7 −11 −4 −4 −6 −6 −8 −5 −7 −8 −8 − 10
97.5% 19 12 18 10 17 12 9 13 9 8 11 9 11 7 1 11 8 10 6 2 12 10 10 7 5 11 9 10 7 4 50
Median 7 0 5 −1 7 4 2 3 1 0 4 2 2 1 −4 5 3 3 1 − 4 6 4 3 2 −1 5 2 2 2 −2
2.5% −5 −10 −9 − 11 − 4 − 5 − 5 −6 −7 − 7 − 4 − 4 − 6 − 5 − 10 −2 −2 − 4 − 4 0 − 1 −3 −3 − 6 − 1 − 4 − 5 − 4 − 7
97.5% 14 7 15 7 13 10 7 11 6 5 9 6 9 6 0 9 6 8 5 0 10 8 8 5 3 9 7 8 5 2 100
Median 6 0 5 −1 6 3 2 3 1 0 4 2 2 1 −4 5 3 3 1 − 3 6 4 3 2 −1 5 2 2 2 −2
2.5% −2 −6 −5 −7 −1 2 −2 −4 −5 −5 − 1 − 2 −4 −3 −8 0 − 1 − 2 − 2 − 7 2 1 − 1 − 2 − 4 1 −2 − 3 − 3 −6
97.5% 11 5 12 4 10 7 5 8 4 2 6 4 6 4 −2 7 5 6 4 −2 8 6 6 4 1 7 5 6 4 0 200
Median 6 0 5 0 5 4 2 3 1 −1 4 2 2 1 −5 5 3 3 1 −4 6 4 3 2 −1 5 2 2 2 −3
2.5% 1 −4 −1 −5 1 0 −1 −1 −3 − 4 1 − 1 −2 −1 −7 2 1 0 −1 −6 3 2 0 0 −3 3 0 −1 −1 −5
97.5% 9 3 10 3 8 6 4 6 3 1 6 4 5 4 −3 6 4 5 3 −2 7 6 5 4 0 7 4 5 4 −1 300
Median 6 1 5 0 5 4 2 3 1 −1 4 2 2 2 −5 5 3 3 1 −4 4 4 3 2 −1 5 2 2 2 −3
2.5% 3 −3 0 −4 2 1 0 0 −2 −2 2 0 −1 0 −6 3 1 0 −1 −5 4 3 1 0 −3 3 1 0 0 −4
97.5% 8 2 9 2 7 5 3 6 3 1 5 3 5 3 −4 6 4 5 3 −3 7 5 5 3 −1 6 4 4 3 −2 400
Median 6 1 5 0 5 4 2 3 1 −1 4 2 2 2 −5 5 3 3 1 −4 6 4 3 2 −1 5 2 2 2 −3
2.5% 4 −1 1 −3 3 2 1 0 −1 −2 3 1 0 0 −6 4 2 1 0 −5 5 3 1 1 −2 4 1 0 0 −3
97.5% 8 2 5 2 4 3 4 2 4 3 3 3 600
median 5 0 3 1 2 2 3 1 3 2 2 2
2.5% 3 −2 1 −1 1 1 2 0 2 1 1 1
  S P M H K S P M H K S P M H K S P M H K S P M H K S P M H K