Table 1 — Some average characteristics of tiie thinned and unthinned stands monitored for microclimatic differences (includes trees 12.7 cm 

 and larger d.b.h.) in northern Utah 



Plot' 



Lodgepole pine per hectare 



Killed 



Live Dead by MPB 



Basal 

 area 



Diameter at 

 breast height 

 Live Dead 



Dominant/ 

 codominant 

 height 



Crown length, 

 percentage 

 of total 

 height 





No.- 





Percent 



nf/ha 



cm - 





/defers 



Percent 











Thinned 











1 



426.3 



0.0 



0.0 



20.7 



24.4 





13.7 



44 



2 



526.1 



.0 



.0 



1 1.5 



17.0 



— 



14.6 



38 



3 



805.7 



.0 



.0 



20.7 



17.5 





13.7 



69 



4 



812.0 



.0 



.0 



20.7 



17.9 



— 



14.6 



52 



5 



888.6 



70.9 



7.4 



20.7 



17.3 



20.6 



15.5 



51 



6 



744.3 



.0 



.0 



23.0 



19.9 





14.3 



38 



7 



670.4 



70.9 



9.6 



23.0 



20.5 



20.3 



14.6 



67 



8 



641.2 



.0 



.0 



25.3 



22.1 







17.4 



60 



9 



901.4 



.0 



.0 



32.1 



21.3 







17.7 



53 



10 



519.9 



.0 



.0 



23.0 



23.6 



_ 



14.6 



52 



Average 



693.6 



14.2 



2.0 



22.1 



M9.8 



^20.5 



15.1 



52 











Unthinned 











1 



0.0 



343.0 



100.0 



20.7 





27.4 



14.3 



68 



2 



.0 



536.7 



100.0 



29.8 





25.9 



15.2 



80 



3 



557.2 



316.5 



36.2 



34.4 



19.3 



25.4 



14.0 



52 



4 



467.3 



158.1 



25.3 



25.3 



22.6 



23.4 



15.9 



35 



5 



1,502.4 



.0 



.0 



39.0 



17.3 





16.5 



46 



6 



1,763.3 



.0 



.0 



56.0 



14.2 





15.2 



28 



7 



1,739.9 



.0 



.0 



43.6 



16.3 





14.3 



43 



8 



1,638.8 



135.9 



7.7 



52.8 



18.0 



24.9 



13.7 



42 



9 



706.5 



151.7 



17.7 



34.4 



20.6 



26.9 



16.5 



67 



10 



784.1 



98.8 



11.2 



34.4 



21.1 



28.7 



15.2 



72 



Average 



916.0 



174.1 



16.0 



37.0 



M7.6 



^23.8 



15.1 



53 



'Variable plot using a basal area factor 10-angle gauge. 

 'Weighted averages. 



Julian Days Julian Days 



Figure 2— Smoothed curves for a 23-day period contrasting phloem (A) and bark surface (B) temperatures 

 on the south side of two lodgepole pine trees between a thinned and unthinned stand. 



4 



