Point sampling

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DBH Trees/ac BA/ac Volume/acP1 P2 P3 P4 P1 P2 P3 P4 P1 P2 P3 P412 12.73 25.46 17.73 0 10 20 10 0 1247 2864 1247 014 9.35 9.35 18.70 28.05 10 10 1318s16 7.16 7.16 7.16 7.16 10 x10 1832Total 29.24 41.97 38.59 35.21 30 40 4397Mean # tree/acre=Variance=( x4−1Std.errormean . = s4∑i=1i− x)x29.24+41.97+38.59+35.21= 36.254=2(29.24−36.25)=variance=n229.474+ .. + (35.21−36.25)3= 2.712= 29.47CI=36.25±t 4-1,0.05 x2.71CI=36.25±8.62t 4-1,0.05 =3.182
Stand and stock table with the confidence intervalsDBH Trees/acBA/ac[ft 2 ]Volume/ac[ft 3 ]Trees/tractVolume/tract12 12.7 10 1339.8 381.0 4019414 16.416 7.2Total 36.3CI 8.64
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 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 38 and 39: POINT SAMPLING METHODOLOGYTwo commo

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