C, N, and P Stoichiometry Characteristics of Fresh and Weathered Sandstones in Longhushan Area, SE China

Carbon (C), nitrogen (N), and phosphorus (P) stoichiometry their allometric relationships in soil plants are hot topics that attract a lot of attention, while those rocks form soils often neglected. Weathering is common geological phenomenon may significantly influence the nutrient composition release nutrients from rock its inherent soils. This study presents C, N, P concentrations data as well microscope petrological photographs fresh weathered sandstones Longhushan World Geopark SE China, an attempt to investigate before after weathering discuss driving mechanisms. The results show decreased C/N, C/P concentrations, slightly N N/P increased concentration. Microscope observations contain calcite, apatite, microplagioclase, organic matter, feature apatite matter. flexible mineral changes indicate chemical mechanisms, such dissolution carbonate hydration have changed existence and, thus, stoichiometry. can be turn used reflect regulation effect weathering.