Response of leaf and soil C, N and P stoichiometry in different Pinus massoniana forest types to slope aspect in the Dabie mountains region of North subtropical, China

Changes in slope aspect have important effects on the C, N and P nutrient contents stoichiometric characteristics of plants soils. As an forest type subtropical region, Pinus massoniana forests play role restoration development ecosystems. In this study, effect stoichiometry leaves soils four P. types (i.e., pure (PF), massoniana-Liquidambar formosana mixed (PLM), - Platycarya strobilacea (PPM), massoniana-Quercus acutissima (PQM)) north region China were studied. The results showed that had significant soil contents, leaf content (LNC), C:P N:P ratios, C:N ratios forests. SOC, STN STP differed significantly two slopes, with three having higher sunny than shady slope. Among types, PQM highest both their all LNC slope, while ratio was At species level, deciduous evergreen , C lower . interaction between caused a certain range fluctuations but overall ecological remained stable, plant growth study area limited by N. Slope-induced changes directly affect C:N:P stoichiometry, are key factors affecting especially content.