Nutrient properties of soils in typical degraded hilly land in South China TWO-DIMENSIONAL NUMERICAL ANALYSIS FOR EVAPORATION PROCESS OF THE BARE SOIL Floor lichens species distribution characteristics in Altay Two River Sources Natural Reserve in Xinjiang, China A Preliminary Analytic Biogeography in Caragana(Fabaceae) Numerical analysis on network characteristics of communities in herb-pairs network A Numerical Analysis of the Distribution Patterns of Chinese Viburnum Numerical Classification of Rhizobia in Leguminous Plants of Wuqia County, Xinjiang Numerical Characteristics of Pollen Assemblages of Surface Samples from the West Kunlun Mountains