Relationships between soil organic carbon density of Eucalyptus plantations and terrain factors in Nanning A study on sap flux density of two eucalyptus (Eucalyptus uro phylla) plantations in southeastern China by heat-pulse method Relationship between Species Diversity and Biomass of Eucalyptus Plantation in Guangxi Effects of continuous planting rotation on forest structural characteristics and water holding capacity of Eucalyptus plantations