Soil particle size distribution and its relationship with soil organic carbons under different land uses in the middle of Heihe river Integrated influence of experimental trampling and simulated precipitation on fractal dimension of soil particle size distributions in the steppes of Huanxian County in Eastern Gansu Province, China Characteristics of Soil Particle Size Distribution in Different Land-Use Types of Oasis Rim Fractal dimension of particle size distribution and its affecting factors in oasis farmland soils in southern marginal zones of Tarim Basin Fractal Features of Soil Particle Size Distribution and Characteristics of Soil Pore Space under Different Plant Communities in Forests of the Yimeng Mountain Soil particle size distribution and its fractal dimension among degradation sequences of the alpine meadow in the source region of the Yangtze and Yellow River, QinghaiTibetan Plateau, China.