Table 4 . - -Equations for live and dead aroim weights of intermediate and suppressed trees 



Spe- : 

 cies : 



Crown 

 section 



MSR- 



1/ 



100 



Range 



in 

 d . b . h . 



Hquat ions 









Lfc2 



Psvccyi t 





Inches 



pr 



Live 



0.90 



358.0 



66 



15 



1-12 





Dead 



. 81 



9.6 



33 



15 



1-12 





r"ninh 1 Ti 



V-" 1 1 1 1 1 1 ^ \J 



. 95 



513.5 



60 



1 5 



1-12 



DF 



Live 



. 96 



1 70. 



30 



15 



1-11 





Live 



. 90 



1 ,758 



121 



15 



1-11 





Dead 



.89 



206.0 



110 



15 



1-11 





Combined 



.94 



1 ,083 



59 



15 



1-11 



GF 



Live 



.92 



731 .0 



53 



15 



1-12 





Dead 



.83 



80.4 



112 



15 



1-12 





Combined 



.94 



651 .8 



43 



15 



1-12 



C 



Live 



.94 



1 ,041 



55 



13 



I-ll 





Dead 



.90 



24.4 



74 



13 



1-11 





Combined 



. 95 



1 ,077 



50 



13 



1-11 



u 



1/w 



— w 



2/ 



— w 

 2/ 



ir 



—' w 



2/ 



2/" 



111 



EXP[-0.7572 + 2.2160(lnd)] 

 HXP[-2.5176 + 2.5100(lnd)] 

 FXP[-0.4282 + 2. 1772(lnd) ] 



10.9 - 11.34(d) + 4.059(d?) 

 - 0.03283(d2h) 

 EXP[0.1508 + l.862Clnd1] 



EXP[-1 .9280 

 EXP[0. 1242 -t 



EXP[1.0144 ^ 

 EXP[-2.6214 

 EXP [1.01 52 ■. 



■ 2.3530(lnd)l 

 2.0083flnd)l 



1 .6156(lndl] 



■ 2.5492(lnd)l 

 1.6839 find 11 



EXP[0.5743 + 1 .7960(lnd)] 

 EXP[-2.7990 + 2.4942(lnd)] 

 EXP[0.6224 + 1.8289(lnd)l 



MSR indicates mean square residuals. For logarithmic functions, MSR was 

 calculated as i;(P-0)2/df, where P and are predicted and observed values trans- 

 formed to arithmetic units and df is the residual degrees of freedom. 



These equations are of the form Iny = a + blnX + (mean square error/2) . 

 The latter term corrects for bias in transforming logs and is included in the 

 intercept term in the equations. The intercept term was adjusted by [mean square/ 2 ^ 

 when the summation of predicted minus observed values in arithmetic units showed 

 less bias with the correction term than without it. 



to 

 I— 



< 



i o 



I— 



o 



o 



o j±! 



1= ^ 



< — 



ry u_ 



1.0 



0.8 



0.6 - 



0.4 - 



0.2 - 



10 



12 



14 



D. B. H. 



Figure 6, — Ratio of total ovown weight for intermediates-to-dominants as a function 

 of d.h.h. The ratios are calculated from equations in tables 1, 2, and 4. 



15 



