1. Volume of Standing Trees
a. When done Stem diameter measurements
After going through the simplification obtained Lbds breast height (130 cm) without rounding obtained:
Lbds = (11/140000) . D2 m2
In order to obtain standing tree volume formula:
Vp = (11/140000) . D2 . T . ff m3 ….. (R-1a)
unit of measurement for the diameter (D) remains in cm; height measuring unit (T) remains in meters.b. If the measurement is done Itinerant Trunk
In line with the above, then the formula for calculating the volume of trees based on trunk circumference Lbds size was obtained:
Vp = (7/880000) . K2 . T . ff m3 ….. (R-2a)
unit of measurement for the circumference (K) remains in cm; height measuring unit (T) remains in meters.2. Roundwood volume
In line with the above, then the formula for calculating the volume of logs are presented as follows.
a. Huber formula
VHb-1 = 11/560000 . (D1 + D2)2 . P m3 or VHb-2 = (7/880000) . KT2 . P m3
to measure the diameter (D1 and D2) or mobile (K) remains in units of cm height measurements (T) remains in units of meters.b. Brereton formula (modification of the formula Huber)
VBr = (11/2240000) . (D1 + D2 + d1 + d2)2 . P m3
to measure the base diameter (D) and tip diameter (d) remain in the unit cm; unit length (P) is fixed in units of meters.c. Smalian formula
VSm-1 = (11/1120000) . {(D1 + D2)2 + (d1 + d2)2} . P m3 or
VSm-2 = (7/1760000) . { (K1)2 + (k2)2}. P m3
to the base diameter (D) and tip diameter (d) in each bontos measured twice in units cm; for the unit of measure around the base (K) and the tip of the stem (k) in cm.d. Newton formula
VN-1 = (11/3360000) . {(D1 + D2)2 + 4.(D3 + D4)2 + (D5 + D6)2}. P m3 or
VN-2 = (7/5280000) . {K12 + 4.K22 + K32} . P m3
to diameter of base, middle and end of each bontos measured in units of cm twice. Also for the unit of measure around the base, middle and end in cm.e. Preszler formula
VPz-1 = (11/1120000) . {(D1 + D2) 0,25P 2 + (d1 + d2) 0,25P 2} . P m3 or
VPz-2 = (7/1760000) . {(K-0,25P)2 + (K+0,25P)2} . P m3
circumference to the diameter or the extent of P 0.25 to the left and right from the center of the rod was measured two times in units of cm. For diameter measurement was performed twice.f. Simony formula
VSi-1 = (11/1120000) . {(D1 + D2) 0,30P 2 + (d1 + d2) 0,30P 2}. P m3 or
VSi-2 = (7/1760000) . {(K-0,30P)2 + (K+0,30P)2}. P m3
circumference to the diameter or the extent of P 0.30 to the left and right from the center of the rod was measured two times in units of cm. For diameter measurement was performed twice.g. Hoppus formula
VHp =(1/160000) . (KT)2. P m3
for the unit of measure around middle of stem in cm.Hopefully this brief thoughts and notes to the benefit of the teachers / instructors (faculty / department / college / diploma / training / courses), the relevant agencies (Central-hall Research, Department) within the scope of the field of Forestry in Indonesia in particular and users other, or at least as inputs without compromising the level of thinking his accuracy.
A2Karim
*) findings and thoughts.080606
** T he full description (in Indonesian) you can have for free (do not pay koq) by contacting us via eMail a2karim09
0 comments:
Post a Comment