476 



The Philippine Journal of Science 



1914 



Table XVII. — Annual diameter growth of Parashorea plicata {bagtican 

 lauayi) in the open, Mount Maquiling, Laguna Province, Luzon. 



[Diameter and growxh are given in centimeters.] 



Wo. of tree in class. 







Diameter class 



in 



centimeters. 





0to5. 



5 to 10 



. 



1 

 10 to 16. 



Diam- 

 eter. 



Growth. 



Diam- 

 eter. 



Growth. 



Diam- 

 eter. 



Growth. 



1- 

 2- 

 3- 

 4.- 



5_- 



6.. 



1 7.- 



' :-- 



9. 

 10- 

 11- 

 12_. 

 13-. 





4.% 

 4.17 

 4.14 

 3.60 

 3.74 

 4.29 

 3.30 

 3.43 

 4.35 

 4.70 

 4.92 

 4.87 



0.683 

 0.595 

 0.575 

 0.988 

 a 748 

 1.690 

 0.558 

 0.334 

 0.716 

 0.780 

 0.609 

 0.702 



7.10 

 7.60 

 6.15 

 5.15 

 6.04 

 5.39 

 6.95 

 6.10 

 5.15 

 5.06 

 7.35 

 7.37 

 6.16 

 5.42 

 6.00 

 6.40 

 4.G2 

 5.04 

 6.69 

 5.75 

 5.51 

 5.C-2 

 6.63 

 5.90 

 9.00 

 9.20 

 7.95 

 9.30 



L145 

 0.605 

 0.668 

 0.975 

 0.638 

 0.810 

 0.430 

 0.381 

 0.575 

 0.940 

 0.844 

 L161 

 0.716 

 0.495 

 0.525 

 a732 

 0.609 

 0.574 

 0.860 

 0.765 

 0.716 

 L224 

 1.030 

 L260 

 0.382 

 1.305 

 0.920 

 0.&t4 



10.06 

 13.60 

 13.80 

 10.95 

 -10.24 

 10.58 

 ILIO 



0.749 

 1.130 

 0.986 

 1.860 

 0.924 

 0.955 

 0.955 























' 14 









15- . 









16 - ' 



t 



17- ! 





18 !_ __ _^__ 



- 



1 19-. 



[ 





i 



1 20 . 



1 









• 21 - 



i 







22 1 







23 1 

 24 - """" * 







" 





26.. 















1 26-- 













"" " 1 

 i 







27 









;:;::-i 



28. 











1 





Total 



Averag-e - 



rs in class 













6. 



85 



8.778 

 0.731 





33 



22.029 

 0.787 





6.969 

 a998 

 00 









Yea. 



6. 



5. 



of even such a rapid-growing species as Parashorea plicata will 

 be much greater than that of temperate zone species. 



However, in comparing the results which may be expected 

 from management in the Philippines with those that can be 

 obtained in temperate zones, the very long period of suppression 

 may very reasonably be left out of consideration. In other 

 words, we may consider those individuals of the stand which lie 

 below from 5 to 10 centimeters in diameter not as a portion of 

 the stand, but merely as the necessary factors of reproduction 

 which are always present in the forest. Following out this 



