PRELIMINARY STUDY ON WOOD PROPERTIES VARIATION OF LOBLOLLY PINE Response Analysis of Tree-Ring Structure of Castanea mollisima to Climate Factors in Beijing Intra-annual variation in δ13C from tree rings of Pinus sylvestris var. mongolica and its response to climatic factors Transcript Accumulation Dynamics of Phenylpropanoid Pathway Genes in the Maturing Xylem and Phloem of Picea abies during Latewood Formation A Preliminary Study on Modeling of Earlywood and Latewood Density Distribution during the Fast Growth Period Radical variation in growth ring width and tracheid dimensions of Metasequoia glyptostrobides Variation in Wood Bending Properties of Exotic Loblolly Pine Provenances for Building Lumber and Their Relationships to Tree Age, Tree Growth and Wood Density STUDY ON RELATIONSHIP BETWEEN SOUND VIBRATION PARAMETERS AND GROWTH RING WIDTH AND LATEWOOD PERCENTAGE OF PICEA GENERA WOOD