Comparison on the Pulping Property between Juvenile and Mature Wood of Populus simonii×P.nigra Microfibril Angles and Fiber Morphology Characteristics of Baldcypress Wood Timber Yields and Fiber Morphology of Intensive Short-Rotation Pulpwood Plantations for Triploid Hybrids of Populus tomentosa Influence of Age on Chemical Components,Fiber Morphology and Pulping Properties of Broussonetia papyrifera Bark STUDY ON VARIATION IN BAMBOO WOOD PROPERTIES OF PHYLLOSYACHYS HETEROCYCLA VAR.PUBESCENS Culm Form Characteristic and Fiber Morphology of Phyllostachys reticulata ‘Shouzhu’ STUDY ON VARIATION IN FIBER LENGTH OF WOOD OF HEBEI POPLAR Study on the Properties of Plantation Timber A COMPARATIVE STUDY ON THE ANATOMY OF STEM AND ITS FIBER OF