This paper had investigated fiber form and crystalline degree of Larix kaempferi in different tree age and different vertical location within a stem.

Taking chemical compositions and fiber shape into account, 12-year and 15-year Larix kaempferi have some advantages over those older than 20 years in papermaking.

By means of measuring integrated factors of growth volume, selected and bred 5 elite clones introduced from 36 clone Larix kaempferi in Liaoning Forest Management Institute which covered by 13.9%;