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growth_calculation_projection
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| Both sides previous revision Previous revision Next revision | Previous revision | ||
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growth_calculation_projection [2012/06/06 19:46] 128.192.48.16 |
growth_calculation_projection [2013/11/04 14:21] (current) ddrummond |
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| Line 17: | Line 17: | ||
| d.i.b. = D.I.B. - 2 X radial growth during last 5 years\\ | d.i.b. = D.I.B. - 2 X radial growth during last 5 years\\ | ||
| - | The term: Σ(d.i.b./D.I.B.)2 is the ratio of basal area 5 years ago to the present basal area.\\ | + | The term: Σ(d.i.b./D.I.B.)<sup>2</sup> is the ratio of basal area 5 years ago to the present basal area.\\ |
| Example: | Example: | ||
| - | ^Tree No. ^D.O.B ^D.I.B ^d.i.b. ^d.i.b./D.I.B. ^Σ(d.i.b./D.I.B.)2 | | + | ^Tree No. ^D.O.B ^D.I.B ^d.i.b. ^d.i.b./D.I.B. ^(d.i.b./D.I.B.)<sup>2</sup> | |
| - | |1 |8.4 |7.6 |5.8 |.763 |.582 | | + | |1 |8.4 |7.6 |5.8 |.763 |.582 | |
| - | |2 |6.7 |6.0 |4.0 |.667 |.445 | | + | |2 |6.7 |6.0 |4.0 |.667 |.445 | |
| - | |3 |10.2 |9.3 |7.8 |.839 |.704 | | + | |3 |10.2 |9.3 |7.8 |.839 |.704 | |
| - | |4 |12.0 |11.0 |9.6 |.873 |.762 | | + | |4 |12.0 |11.0 |9.6 |.873 |.762 | |
| - | |5 |9.6 |8.7 |6.8 |.782 |.612 | | + | |5 |9.6 |8.7 |6.8 |.782 |.612 | |
| - | ^Total ^3.105 ^^^^| | + | ^ Total^^^^^3.105 | |
| - | % growth = 1 - (Σ(d.i.b./D.I.B.)2 /total trees in sample)\\ | + | % growth = 1 - (Σ(d.i.b./D.I.B.)<sup>2</sup> /total trees in sample)\\ |
| % = 1 - (3.105/5) = 1-.621 = .379\\ | % = 1 - (3.105/5) = 1-.621 = .379\\ | ||
| % = .379 or 37.9% (for 5 years)\\ | % = .379 or 37.9% (for 5 years)\\ | ||
growth_calculation_projection.1339011964.txt.gz · Last modified: 2012/06/06 19:46 by 128.192.48.16
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