Mixed planting improves soil aggregate stability and aggregate-associated C-N-P accumulation in subtropical China

Research on the variations in soil aggregate stability and ecological stoichiometry at scales by stand type is of great significance investigating distribution, limitation, balance, cycling organic carbon, nitrogen, phosphorus (C-N-P). However, effect pure mixed Chinese fir plantations stability, carbon (OC), total nitrogen (TN), (TP) characteristics still unclear. In this research, we explored mean weight diameter (MWD) geometric (GMD); OC, TN, TP contents stocks C:N:P ratios as affected different types (mixed stands Mytilaria laosensis , Michelia macclurei fir); size (<0.25, 0.25–1, 1–2, >2 mm) 0–20 20–40 cm depths subtropical China. The OC TN contents, well declined increased, whereas C-N-P showed opposite tendencies, which were more distributed mm aggregates. Mixed M. with displayed significantly higher aggregate-associated content, stocks, C:N C:P than did fir. Soil was positively correlated ratios, especially ratio content. Overall, work offers further information for scientific management sustainable development plantations, nutrient global terrestrial ecosystem.