STUDY ON CORRELATIVE RELATIONS BETWEEN AIR-SEEDING EFFECT AND SITE FACTOR FOR PINUS T ABULAEFORMIS The influences of site factors on the interspecific competition between Japanese yew (Taxus cuspidata) and other tree species A STUDY ON THE RELATIONSHIP BETWEEN THE SITE FACTORS AND THE BIOMASS OF THE ORGANS IN CUNNINGHAMIA LANCEOLATA PLANTATIONS OF XIJIANG RIVER DISTRICT IN GUANGDONG PROVINCE POPULATION CHARACTERISTICS OF YEW (TAXUS CUSPIDATA) IN THE MULING YEW NATURE RESERVE, HEILONGJIANG PROVINCE STUDY ON THE SITE CONDITIONS SUITABLE FOR YOUNG PLANTATION OF FRAXINUS MANDSHURICA The biomass of Bashania fargesii in giant pandas habitat in Qinling Mountains TIMBER PRODUCTIVITY OF YOUNG MONGOLIAN SCOTS PINE PLANTATION IN EASTERN MOUNTAIN REGIONS OF NORTHEAST CHINA