Within-tree variations, whole-tree values and the representative heights for the whole tree value of basic density, and contents of wood components per volume were analysed for two trees of Eucalyptus camaldulensis and

E

. globulus respectively, grown at the seed orchard in Western Australia to do quality breeding.
Within-tree variation of

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. camaldulensis was rather uniform as 500±40, 532 ±34 kg/, but that of

E

. globulus was large as 595 ± 69, 616 ± 79 kg/ and the basic density was higher in bark side and upper part in the trunk, to be expected to have higher pulp productivity.
The whole-tree values of

E

. camaldulensis were 501, 520 kg/ and those of

E

. globulus were 594, 640 kg/ and the difference of the species was observed.
Representative heights for the whole-tree contents ±5 % were 0.32. m on

E

. camaldulensis, and 0. and 2. m on

E

. globulus regardless the differences in the whole-tree height and the within-tree variation when they were chosen below . m height for sampling an increment core.
Representative heights were also determined for contents of wood components per volume as follows ; for

E

. camaldulensis, holocellulose : 1., 2. m, cellulose : 2.. m, hemicellulose : 0.82. m, lignin : 0.81., 2. m, extractives : 2. m, alkali-extractives : 1. m, and total-extractives : 2.32. m, for

E

. globulus, 2. m, 2.32. m, 2. m, 0.30. m, 2.. m, 2.. m and 2. m in the same manner.
It is expected that whole-tree pulp properties including pulp productivity are predicted by the increment core taken from these representative heights.

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