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use_of_wedge_prism
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use_of_wedge_prism [2012/07/12 19:27] 128.192.48.132 |
use_of_wedge_prism [2012/07/12 19:44] (current) 128.192.48.132 |
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| * For a 10 factor prism\\ | * For a 10 factor prism\\ | ||
| - | 1/ Merchantable height is in 16 foot logs | + | 1/ Merchantable height is in 16 foot logs |
| + | |||
| + | ====Local volume factors==== | ||
| + | Pulpwood factors are fairly consistent. Sawlog factors are not very reliable in different localities. | ||
| + | The procedure to prepare local factors is as follows: | ||
| + | 1. Write down the sample trees according to diameter class and number of logs. (The total trees | ||
| + | tallied divided by the number of points or samples.) | ||
| + | 2. Obtain the number of plots per acre from the table at page 54. | ||
| + | 3. Multiply in order to obtain trees per acre. | ||
| + | 4. Write down volume for each tree. | ||
| + | 5. Multiply to obtain volume per acre. | ||
| + | 6. Total volume per acre for each length class. | ||
| + | 7. Write down the basal area per acre (trees per plot for each length class multiplied by the | ||
| + | basal area factor). | ||
| + | 8. Volume factor is the volume per acre divided by basal area per acre. | ||
| + | Refer to following example | ||
| + | |||
| + | ===Basal Area Factor: 10=== | ||
| + | ^Dbh Class ^Trees per point ^^^Plots per acre ^Trees per acre ^^^Volume per tree^^^Volume per acre^^| | ||
| + | ^ ^1-log^2-log^3-log ^ ^1-log^2-log^3-log^1-log^2-log^3-log^1-log^2-log^3-log| | ||
| + | |10 |0.136|0.136| |18.349 |2.5 |2.5 | |40 |60 |70 |100 |150 | | | ||
| + | |12 |0.785|0.628|0.157 |12.739 |10.0 |8.0 |2.0 |50 |90 |120 |500 |720 |240 | | ||
| + | |14 |0.428|0.534|0.107 |9.355 |4.0 |5.0 |1.0 |80 |130 |170 |320 |650 |170 | | ||
| + | |16 |0.140|0.419|0.140 |7.163 |1.0 |3.0 |1.0 |100 |170 |230 |100 |510 |230 | | ||
| + | ^Total ^1.489^1.717^1.404 ^ ^Boardfeet per acre ^^^^^^1020 ^2030 ^640 | | ||
| + | ^ ^^^^^Basal Area per Acre ^^^^^^14.89^17.17^4.04 | | ||
| + | ^ ^^^^^Volume Factor ^^^^^^68.5 ^118.2^158.4| | ||
use_of_wedge_prism.1342121231.txt.gz · Last modified: 2012/07/12 19:27 by 128.192.48.132
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