Canopy cover varied from 36 percent in plot S4 to 64 percent on plot S2 (table 3) . 

 Stand basal area ranged from 23.4 m 2 /ha on plot SI to 38.4 m 2 /ha on plot S4. Stand 

 basal area growth from 1966 through 1975 varied from 2.2 m 2 /ha/decade on plot Ml to 

 5.3 m 2 /ha/decade on plot SI. 



Total aboveground biomass, wood mass, and foliage mass in metric tons per hectare 

 on each plot, and the rate of total aboveground biomass accumulation are also presented 

 in table 3. The figures for wood are based on the mass of ovendry wood (bark excluded) 

 in stems and limbs larger than 76 mm (3 inches) diameter and provide an indication of 

 the amount of cordwood. One cord contains about 1 metric ton of ovendry wood, not 

 counting bark. 



Crown maps and tree data for the five plots measured in 1978 are in appendix C 

 and appendix D. For crown maps and tree data for plots measured in 1977, see Meeuwig 

 and Budy (1979) . 



Height Growth 



In general, the plots sampled in 1977 showed appreciable variation in rates of 

 height growth among trees, even among dominants; but each tree grew in height at a 

 fairly constant rate throughout most of its life. There was little indication that 

 height growth slowed down as the trees aged. The plots sampled in 1978 showed even 

 more variation in height growth rates among dominants, but few of the dominants have 

 straight-line height growth curves (fig. 1 and 2). Some have the typical curve, 

 exemplified by tree No. 48 on plot PI, in which height growth rate decreases as height 

 increases. Some, like tree No. 43 on plot PI, grow rapidly at first and then slow 

 down to a lower rate of height growth that is sustained for one or two centuries. 

 Others have erratic rates of height growth that may, like that of tree No. 5 on plot S4, 

 increase with time. 



Table 3 .- -Canopy cover, stand basal area, biomass, and growth rates on the eight plots 



Plot 





SI 



S2 





S3 



S4 





PI 





P2 



P3 





Ml 





Canopy cover (%) 



49 



64 





60 



36 





52 





56 



58 





40 





Stand basal area (m 2 /ha) 



23.4 



35. 



.4 



34.8 



38. 



.4 



33. 



.0 



32. 1 



29. 



.9 



29. 



1 



Total aboveground biomass (MT/ha) 



80 



116 





121 



118 





86 





102 



96 





60 





Wood (MT/ha) 



30 



47 





54 



55 





33 





42 



35 





19 





Foliage (MT/ha) 



13 



15 





14 



10 





10 





13 



13 





9 





Decadal growth (1966-1975) 





























Stand basal area (ra 2 /ha/10 yrs) 



5.3 



3. 



6 



3.8 



2, 



5 



2 



7 



2.7 



3. 





2. 



2 



Total aboveground biomass (MT/ha/ 10 yrs) 



20.8 



12. 



3 



13.4 



9. 



3 



8. 



4 



10.6 



13. 



4 



5. 



5 



4 



