Table 1:
Critical distances and required “push’’ for sampling with a stand density factor (SDF) of 50, using a basal area factor (BAF) 4 m
2
/ha prism. When the “push’’ is shown as negative, the prism must be pulled back across the point.
DBH, cm
Critical Distance, m
Critical Distance, m
Required Push, m
5
1.25
2.20
0.95
10
2.50
3.83
1.33
15
3.75
5.30
1.55
20
5.00
6.67
1.67
25
6.25
7.98
1.73
30
7.50
9.23
1.73
35
8.75
10.44
1.69
40
10.00
11.62
1.62
45
11.25
12.77
1.52
50
12.50
13.89
1.39
55
13.75
14.99
1.24
60
15.00
16.07
1.07
65
16.25
17.14
0.89
70
17.50
18.18
0.68
75
18.75
19.21
0.46
80
20.00
20.23
0.23
85
21.25
21.24
90
22.50
22.23
95
23.75
23.21
100
25.00
24.19