Characteristics in Nitrogen Nutrition of Acacia mangium and Acacia auriculaeformis Man-Made Forests Effects of Different Harness Measures on Latertic Red Soil Fertility in Southeast Coast of Fujian Decomposition rates of two species of leaf litter at an oligotrophic pond in the southern China Variations of photosynthetic parameters in leaves of Acacia auriculaeformis grown in different nitrogen sources under increased atmospheric NH3 Effects of copper on rhizobia-Acacia auriculaeformis symbiotic association Effect of Climatic Factors on Nitrogen Fixation in Three Leguminous Trees The Influences of Gaps in Different Forest Communities on the Growth of Transplanted Tree Seedlings on N an‘ao Island Stem Sap Flow Characteristics of Acacia auriculaeformis in Dry-hot Valley and Their Relations to Meteorological Factors