25 



25 



20 



15 



O 

 to 



CD 

 Q) 



O) 

 O 



Q 10 



-Surface 



O 



V) 

 CD 



Q 



20 - 



15 



10 surface 



5- 



600 



1200 

 Hour 



1800 



600 



1200 

 Hour 



Figure 5 — Smoothecd curves for a 24-hour period 

 (August 3, 1986). Temperatures at breast height on 

 the north side of the tree are contrasted between (A) 

 bark surface and phloem-thinned; (B) bark surface 

 and phloem-unthinned; and (C) thinned and 

 unthinned phloem. 



0.15 



c 



"cD 



=t 

 O 



o 

 o 



- 0.05- 



205 



215 

 Julian Days 



225 



0.05 

 



205 



215 

 Julian Days 



Figure 6— Smoothed curves for a 23-day period contrasting breast height (A) and tower (B) solar radiation between a 

 thinned and unthinned lodgepole pine stand. 



