Leaf stoichiometry of trees in three forest types in Pearl River Delta, South China Spatiotemporal Heterogeneity of Soil Particulate and Mineral-Associated Organic Carbon of Forest Gaps in Pinus koraiensis Coniferous and Broad-Leaved Mixed Forest Short-term Dynamics of Community Composition and Structure during Succession of Coniferous and Broad-leaved Mixed Forest in Dinghushan