Biomass and Nutrient Distribution of Acacia mangium Plantations
Acacia mangium plantations respectively at the age of stand of 4 years, 7 years and 11 years were selected from standard plots with similar site conditions, and their biomass and nutrient elements (N, P, K, Ca, Mg, Fe, Mn, Cu, Zn, and B) were determined to reveal their distribution in different organs. The results showed that the biomass of A. mangium. increased gradually with the age of stand. The biomass of stick and root stump declined between the age of stand of 7 -11 years, but that of the other organs increased with the age of stand. N was the richest in the organs of A. mangium, and the contents of nutrients declined in the order of N > Ca > K > Mg > P. Among the trace elements, Mn content was the highest, and the contents of trace elements declined in the order of Mn > Fe > B > Zn > Cu. The nutrients were highest in tree trunks and lowest in fine roots, and some nutrients were mainly distributed in trunk, branches, bark and leaves.
Acacia mangiumPlantationBiomass and nutrient distribution
国家科技期刊平台
NSTL
万方数据
维普
