Acacia spp.is an important fast-growing tree and has been introduced all over the world.It plays vital roles on the forests construction of short-period industrial raw material,sustainable forest management and germplasm resources of forest trees in South China.The nutrient return from litter layers is the initial process of organics production in the forest.Nutrient utilization,recycling and flowing was the hub between the organic matter and the soil system interior.The circulation of nutrient elemen...