Plant Diversity and Aboveground Biomass Interact with Abiotic Factors to Drive Soil Organic Carbon in Beijing Mountainous Areas

We analyzed and compared the effects of biotic factors (species diversity, structural aboveground biomass) abiotic (topography soil properties) on organic carbon in selected mountainous areas Beijing China. An overall goal is to provide a preliminary scientific basis for biodiversity protection coordinated development forest ecosystems subsequent balance this region. Our study were coniferous forests, mixed broadleaved forests western area Beijing. determined both direct indirect using multiple linear regression equation model. Results showed that biomass diversity main driving forces accumulation surface layer (0–10 cm), but species had no significant effect (p > 0.05). Abiotic (altitude, total nitrogen, potassium) some influence subordinate factors. The subsurface layers (10–20 cm) (20–30 0.05), whereas altitude nitrogen played dominant role < 0.01). influences influences, major role. results form an initial reference afforestation management (Beijing-Tianjin Sandstorm-source Control Project) from perspective storage enhancement.