Studies on the Density Effects of Chinese Fir Stands STUDIES ON DIRECTIVE SILVICULTURE OF POPLAR VENEER GLUED WOOD IN THE SOUTHERN REGION OF CHINA THIN DENSITY CONTROL AND DEEP SOIL TENDING EFFECT ON CHINESE FIR IN FAST-GROWTH PHASE ESTABLISHMENT AND APPLICATION OF THE DENSITY INDEX AND MATHEMATICAL MODEL OF FOREST INVENTORY FACTORS A STUDY ON THE DENSITY CONTROLLING TECHNIQUE OF LARIX OLGENSIS INDUSTRIAL PLANTATION Research Status and Trend on Plantation Density Control Techniquesin Arid and Semi-arid Regions ESTABLISHMENT OF STAND DENSITY CONTROL DIAGRAM FOR POPLAR IN LINGYI PREFECTURE, SHANDONG PROVINCE ESTABLISHMENNT AND APPLICATION OF DENSITY CONTROL DIAGRAM OF JAPANESE LARCH STAND A STUDY ON DENSITY OPTIMIZING DURING STAND MANAGEMENT FOR PINUS MASSONIANA PLANTATION Self-thinning of natural broadleaved forests in Baishilazi Nature Reserve An Approach to Derive Stand Density Control Chart from the Integrated Stand Growth Model