A hrowth and yield prediction model for Even-aged stand of pinus merkusi Jungh. et de Vriese

SUMMARY
0 PUDJO WIDODO.

A Growth and Yied Prediction Mo-

d Stand of Pinus merkusii Jungh. et de V r i e s e .
tee ISNEMAT SOERIANEGARA, Chairman, HERMAN
0 $A$TROSOEMARTO and MOBLYARNO PJOJOMARTQNO,

tudy aims to formulate a quantitative model that
to predict the growth and yield ~f even-aged
~ r k u s i f . The desired model is thg gne which
riteria : simplicity, practicability, powerlity, consistent and its capability to reflect

ure dynamics.

ed in this study were taken from a series of
s conducted by the Center

form 1 9 7 3 to 1984.

of Forest R e s e a r c h and

A13 sample trees and stands

in Java, distributed in all provinces possessing
even-aged stands.
ing the tree-volume estimation mgdel, 476
e selected from those that are healthy, w i t h

ies and straight stems.

They were selected

133 trees or 28 X I , Central Java (194 trees
t Java (149 trees or 31 X ) .

By age, they

o 0 clasees; 82 trees or 17 X in the class

8 trees or 27 X in the class 11
X

in the class 16

-

-

1 5 years,

20 years, 33 trees or 7 %

25 years, 12 trees or 3

X

in the class 26

-