DOES EASTERN WHITE PINE OCCUR ON SITES IV AND V? 



By Ralph C. Hawxey 

 Professor of Forestry, Yale Forest School 



In a note entitled "More about Sites''^ Recknagel attempts to show 

 from data collected in the Hudson River watershed. New York State, 

 that white pine is there found growing on sites which in Europe 

 would be classified as IV or V. This note is intended to amplify his 

 statement to that effect appearing in the Proceedings of the Society 

 of American Foresters, Vol. XI, p. 441. Even if Recknagel's con- 

 tention as to the existence of Sites IV and V in this region later proves 

 to be well founded, yet the figures which he has presented, when 

 rightly interpreted, disprove instead of support his statements. This 

 may be shown as follows: In his article he lists 19 sample plots, all of 

 which fall within qualities I-III except three plots, numbers 3, 6, and 

 II. These he indicates as Sub III, and to substantiate his previous 

 statements must identify as IV. The standard for comparison he takes 

 as Tables 3, 4, and 5, in Bulletin 13. ^ Height is taken in Bulletin 13 

 as the basis of separation into qualities and this is accepted by Reck- 

 nagel. The same figures of age and height which he uses are taken 

 from Tables 3 to 5, Bulletin 13, and from his plots and combined below 

 with additional figures. 



Site. 



Values from Tables 3 to 5. Bulletin 13. 



35 years. 



Volume, 

 cubic 

 feet. 



Heisrht. 

 feet. 



SO years. 



Volume, 

 cubic 

 feet. 



HeiK-ht. 

 feet. 



Relative values based on Site I values 

 as 100. 



35 years. 



Volume. 



cubic 



feet. 



HeiKTht. 

 feet. 



.SO years. 



Volume, 

 cubic 

 feet. 



Heififht. 

 feet. 



I ., 



II , 

 III 

 IV 



5,200 



4,i8o 



3, TOO 



53 ' 8,8oo 



44.5 7,000 



36.0 5,200 

 27.5a 



Sub. Ill ; .... 



Sub. Ill '. .... 



Sub. Ill ' 2,840 



2,356 

 3.424 



33-5 



74-5 

 64.0 



54-0 

 43.00 



49.0 

 48. Sf 



100 

 80 

 60 



100 

 84 

 68 



52& 



100 



80 

 59 



100 

 86 



72 

 s8/' 



RecknaiLrcrs Plot 3 

 rvccknagcl's Plot 6 

 Recknagel's Plot 11 



a Derived by use of the relative values and not j^iven in Bulletin 13. 

 6 Not derived directly witli aid of a Site IV height, because none exists, but 

 secured by a proportional reduction of the relative values of Sites I to III. 

 c Age, 49 years. 



'Journal of Forestry, Vol. XV, pp. 929-930. 



""White Pine tnider Forest Management." I'lilletin 13. U. S. Dept. of .\gri. 



341 



