IX, A, 5 



Brown and Mathews: Dipterocarp Forests 



485 



Table XXIII. — Annual dicumeter growth of dipterocarps. Type area B. 



Bataan Province, Luzon. 



[Diameter and growth are given in centimeters.] 



Species. 





Diameter class in centimeters. 





0to5. 



5 to 10. 



10 to 20. 



20 to 30. 



Diam- 

 eter. 



Growth. 



Diam- 

 eter. 



Growth. 



Diam- 

 eter. 



Growth. 



Diam- 

 eter. 



Growth. 



Skorea polysperma (tan- 



3.5 

 3.8 

 4.5 



0.016 

 O.O04 

 0.115 







16.8 

 15.6 

 10.1 

 11.1 

 13.1 

 11.4 

 10.8 

 13.7 



0.573 

 0.000 

 0.075 

 0.265 

 0.000 

 0.178 

 0.456 

 0.515 



25.2 

 23.2 

 26.4 

 23.2 

 21.0 

 28.6 



0.128 

 0.174 

 0.340 

 0.538 

 0.182 

 0.810 



Do 







Do 



8.9 

 8.9 

 8.3 

 7.3 



0.091 

 0.178 

 0.099 

 0.140 



Do. 



Do..... ... 







Do 







Do ._ 







Do 















Total -. 







1 



t 1 





0.135 

 0.045 





0.508 

 0.127 





2. 062 





2.172 

 0.S62 



Average 





1 0.257 



38-8 



Years in class 



1] 



1.1 



39.5 







27.6 



Dipterocarpus grandiflo- 

 ru3 (apitong) 















3.8 



0.000 



7.9 

 7.9 

 8.9 

 9.6 

 8.6 

 9.7 

 5.1 

 6.4 

 6.4 

 7.9 

 5.4 



0.024 

 0.004 

 0.008 

 0.000 

 0.145 

 0.127 

 0.134 

 0.138 

 0.000 

 0.044 

 0.129 



14.0 

 19.1 

 14.6 

 11.1 

 13.7 

 12.1 

 13.0 

 12.7 



0.324 

 0.039 

 0.202 

 0.198 

 0.168 

 0.085 

 0.077 

 0.224 



28.0 

 21.0 

 22.9 

 21.7 



0.158 

 0.111 

 0.004 

 0.508 



Do 



Do.— 







Do 







Do.. __ 







Do 











Do. 











Do__-_ 











Do 











Do 















Do-... .... 















Total 

















0.000 





0.753 

 0.068 



. \ 



1.317 

 0.165 





0.781 

 0.195 



Average 





Years in class 





7 



3.K 



60.6 



51.2 



Pentacme contorta (white 

 lauan) 











7.0 

 5.7 

 5.4 

 5.4 



0.000 

 0.010 

 0.036 

 0.063 



17.8 

 18.8 

 14.0 

 13.6 

 11.4 

 10.2 



0.222 

 0.328 

 0.008 

 0.138 

 O.OOO 

 0.039 



24.8 

 22.9 

 21.0 



0.039 

 0.166 

 0.075 



Do.. 







Do. 







Do 







Do 











Do 















Shorea gu iso (gui jo) _ . 



Do.. -. . 



4.5 



0.079 



7.0 

 8.5 



9.2 



0.210 

 0.128 



0.122 















Aniaoptera thurifera (pa- 

 losapis) .. 







18.1 



0.099 







Total, all diptero- 













.214 

 .043 





1.711 

 0.085 





4.233 

 0.183 





3. 283 1 



1 



'ifl i 



Average. all diptero- 

 carps 





Years in class, all diptero- 

 carps 



1 



16 



56.1 



51.6 



40. 1 















__ 1 



