Relationship Between Resistance Level of 10-and 11-Year-Old Poplar Strains to Cryptorrhynchus lapathi L. (Coleoptera: Curculionidae).and the Physical Properties of Poplar Trunk Relationship between the Resistance Level of Poplar Strains Resist to Cryptorrhynchus lapathi (Coleoptera: Curculionidae)and the Physical Properties of Their Trunks Sap Flow and Transpiring Water-consumption of Pinus sibirica in Differernt Diameter Classes Different Patterns of Changes in the Dry Season Diameter at Breast Height of Dominant and Evergreen Tree Species in a Mature Subtropical Forest in South China