Table 6. — Hypothesis values for figures 2 and 3. Monoterpene percentage of lodge- 

 pole pine dry weight, at average annual radial growth = 0.1 59 inches (0.404 

 cm), average for 86 trees. Percent by weight of phloem at average annual 

 radial growth = 0.159 inches (0.404 cm) 



D.b.h. 



Phloem 4 8 10.5 12 16 20 (inches) 



Component thickness 10.2 20.3 26.7 30.5 40.6 50.8 (cm) 



a-pinene 



Inches 



cm 















0.05 



0.13 



0.007 



0.013 



0.015 



0.014 



0.011 



0.008 



.10 



.25 



.020 



.038 



.043 



.041 



.032 



.022 



.15 



.38 



.038 



.072 



.081 



.077 



.060 



,042 



.20 



.51 



.059 



.113 



.126 



.120 



.093 



.065 



p-phellandrene 



05 



.13 



.028 



.053 



.060 



.057 



,044 



.031 



10 



.25 



.082 



.157 



.175 



.167 



,129 



.091 



15 



.38 



.155 



.293 



.328 



.312 



.243 



.170 



20 



.51 



.242 



.458 



.512 



.488 



.379 



.265 



p-pinene + .05 .13 



3-carene + .10 .25 



myrcene .15 .38 



.20 .51 



.013 



.025 



.028 



.027 



.021 



.015 



.039 



.074 



.082 



.078 



.061 



.043 



.073 



.138 



.154 



.147 



.114 



.080 



.114 



.215 



.241 



.229 



.178 



.125 



All terpenes 



.05 



.13 



.048 



.092 



.102 



.098 



.076 



.053 



(sum of those 



.10 



.25 



.142 



.269 



.300 



.286 



.222 



.156 



above) 



.15 



.38 



.265 



.504 



,563 



.536 



,416 



.292 





.20 



.51 



.414 



.786 



.879 



.837 



,650 



.455 



Table 7.— Mathematical descriptors for figures 1 -3 and appendix tables 

 4, 5, and 6. 



Monoterpene Models 



Percent monoterpene content = (21.0621 * YPP * P'-^^) * K 



(D + 8.5) _T 



For D =s 10.5 19 



YPP = YPD * (1.00165 * e 



For D > 10.5 



YPP = YPD * (1.07092 ' e 

 For « D =s 22 

 YPD = 0.38 + 1.0292 * G' " 



K, = 1.10301, all monoterpenes 



K2 = 0.64292, p-phellandrene 



K3 = 0.30222, p-phinene + 3-carene 



-I- myrcene 

 K4 = 0.15787, a-pinene 



0.395 



(38.5 - D) _i 



28 



0.49 



0.387 

 0.402 



0.352 

 0.213 



0.00165) 



0.07092) 



y,x 



0.150 

 0.098 



0.044 

 0.023 



where 



P = phloem thickness, inches; 

 D = tree d.b.h., inches; 



G = average annual radial growth, last 5 years, inches. 



Limits 



« P s= 0.25, s D s: 25, =s G =5 0.5 



^Conservative estimates. 



9 



