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Effects of diameter at breast height on crown characteristics of Chinese Fir under different canopy density conditions Branch Dynamics for the Korean Pine Plantation Based on Linear Mixed Mode Research on Tree Crown Recognition System Based on BP Networks The growth of canopy trees and gap dynamics of the Korean-pine forests Effect of the Selection of Grown Structure and Growth Characteristics on the Improvement of Tree Trunk Form in Paulownia fortunei The Character istics of Nutr ient D istr ibution in the Tree Crown ofAbies georgei var . sm ith ii Forest in Mount Sejila of Tibet Effects of Crown Attr ibutes onWood Character isticsand Increments of Popu lus ×xiaohe i Classification of Pinus massoniana and secondary deciduous tree species in northern subtropical region based on high resolution and hyperspectral remotely sensed data Fractal Characteristics of Tree Crown of Populus×xiaozhuanica in Shelterbelts Study on Tree-Crown Extraction from QuickBird Imagery Based on Object-Oriented Approach in the Project of Converting Cropland to Forest Investigation on the structure of the protective forest belt in sandy area in Maowusu Application Methods of "3S"Technology in Extracting Forest Information in the Project of Returning Farmland to Forest Crown interception of apple trees in loess hilly and gully region, Northwest China. Fractal analysis of crown structure in Pinus sylvestris mongolica plantaiton Estimating Stem Volume Using QuickBird Imagery and Allometric Relationships for Open Populus xiaohei Plantations SEASONAL CHANGES AND DAILY COURSES OF PHOTOSYNTHETIC CHARACTER ISTICS OF 18-YEAR-OLD CHINESE FIR SHOOTS IN RELATION TO SHOOT AGES AND POSITIONS WITHIN TREE CROWN