Point sampling

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VOLUME – VF METHOD<strong>Point</strong> cruise:Measure tree DBHand heightsCalculateVolume Factor foreach dia-height classConstruct a Table:Bin measured treesinto diameter-heightclassesCalculateTree Factor foreach DBH-height classCalculateVolume per acre
VF METHOD - EXAMPLE<strong>Point</strong>-sample cruise on a 40 ac tract• BAF 10• 12 pointsVOLUME /AC = TREES/AC x VOLUME/TREETree factorTFiFor=BAFBA per treeBAF= 10=( π ×BAFDBH2/4)Why144?TF10"=π ×BAFDBH2/4=103.141×100 /(4×144)= 18.349TF12"=π ×BAFDBH2/4=103.141×144 /(4×144)= 12.73
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 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 28 and 29: POINT SAMPLING - VOLUME EXAMPLEMake
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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