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Table 1 Sampling surface statistics for the northern hardwoods and white pine simulated populations. The northern hardwood population of 667 trees had a total basal area of B=48.4 m 2, with volume of 418.5 m 3. The white pine population of 316 trees had total B=47.2 m 2and volume of 619.6 m 3

From: A note on the estimation of variance for big BAF sampling

Population

BAF

Volume

CV% a

Basal Area

CV%

Sampling b

(Species)

(m2·ha−1)

(m3)

 

(m2)

 

Efficiency %

N. Hardwoods

3

418.24

73.36

48.34

73.01

77.32

 

4

417.95

77.78

48.31

77.07

74.14

 

5

418.20

81.52

48.34

80.55

72.08

 

10

417.56

95.68

48.26

93.72

64.91

 

20

418.27

117.55

48.35

114.29

51.70

 

30

417.79

137.11

48.27

132.95

41.20

White Pine

3

619.24

80.45

47.13

81.73

81.24

 

4

619.16

85.58

47.13

86.67

75.70

 

5

619.55

89.62

47.15

90.59

71.97

 

10

619.67

103.39

47.17

103.70

62.80

 

20

619.35

121.25

47.14

120.68

52.97

 

30

617.94

136.15

47.02

134.92

45.16

  1. aCV%, is the coefficient of variation in percent (see text)
  2. bSampling Efficiency % is the percentage of grid cells in the sampling surface whose centers (sample points) are covered by one or more inclusion zones; values are the same for each attribute (see text)