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Research Crown Diameter and Diameter at Breast Height Relations of Ten Kinds of Major Natural Secondary Broad-leaved Tree in Maoershan Mingling of Evergreen BroadLeaved Forests in Tianmu Mountain Based on Voronoi Diagram Seasonal release characteristics of Ca, Mg and  Mn of foliar litter of six tree species in subtropical evergreen broadleaved forest. Liana Species Diversity and Relationships with Its Host Trees in the Moist Evergreen BroadLeaved Forest in the Ailao Mountains, Southwest China Assessment of Protection Efficiency to the Changbai Mountain Nature Reserve Estimation for vegetation carbon storage in Tiantong National Forest Park. STUDY ON SOIL HUMUS AND FERTILITY CHARACTERISTIC IN THE 29 YEAR-OLD PLANTATIONS OF CHINESE FIR ON DIFFERENT ROTATIONS