Point sampling

POINT SAMPLING METHODOLOGYDOUBLE SAMPLING = NESTED APPROACHBIG BAF METHOD• Use FIRST prism with a BAF that tallies 7-13 trees per pointas primary.• At each sample point, use a SECOND prism with a largerBAF that tallies 1-7 trees per point to select trees for diameterand height measurements. These trees are often called“volume trees” or “VBAR trees”.• Use primary tallies to calculate stand basal area.• Use VBAR tree measurements to calculate stand density andvolume.• Materials are in the textbook (pg250) and online