Point sampling

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POINT SAMPLING – VOLUME EXAMPLEMake a table!Example using a 20 BAF prismNumber of point sampled = 8DBH/HT Tally V iBA/tree TF in ix TF iVF i n ix VF i10"/80' 10 40 0.55 36.4 364 1456 1456010"/100' 12 6012"/100' 13 8514"/120' 8 1101279.3 85187Note: You can calculate TPA and volume by hand. However,we usually use a software package to do these tediouscalculations for us.
POINT SAMPLING – VOLUME EXAMPLETrees per acreRecall:⎛⎜ ∑ (ni)(TFiTPA= ⎝ np) ⎞⎟⎠We know:Σ n i x TF i =1279.3n p = 8So, from previous slide:TPA=⎛1279.3⎞⎜ ⎟=⎝ 8 ⎠159.9160 TPA
Page 2 and 3: POINT SAMPLINGA method of sampling
Page 4 and 5: POINT SAMPLINGEach tree has agiven
Page 6 and 7: POINT SAMPLING VS.FIXED-AREA PLOT S
Page 8 and 9: POINT SAMPLING - BAFBasal area fact
Page 10: POINT SAMPLING - PRFPlot Radius Fac
Page 13: Therefore each tree tallied represe
Page 16 and 17: POINT SAMPLING-COMPUTE TREES PER AC
Page 18 and 19: POINT SAMPLING-COMPUTE TREES PER AC
Page 20 and 21: VOLUME - VF METHODPoint cruise:Meas
Page 22 and 23: VF METHOD - EXAMPLEFirst, compute v
Page 24 and 25: VF METHOD - EXAMPLEMake a table wit
Page 26 and 27: TotalMake a table with the collecte
Page 30 and 31: POINT SAMPLING - VOLUME EXAMPLEVolu
Page 32 and 33: • International ¼ in rule• For
Page 34 and 35: DBH Plot 2LogsBA/ TF Per acre …1
Page 36 and 37: DBH Trees/ac BA/ac Volume/acP1 P2 P
Page 38 and 39: POINT SAMPLING METHODOLOGYTwo commo

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