Interspecific relationships of Caragana microphylla, C. davazamcii and C. korshinskii (Leguminosae) based on ITS and trnL-F data sets A Comparative Study of Photosynthetic Characteristics of Caragana davazamcii Between Plants of Different Ages in Huangfuchuan Basin of Ordos Plateau Genetic structure of Caragana davazamcii Sancz along a precipitation gradient in Erdos Plateau CHANGES OF CHARACTERISTICS OF THE LEAF EPIDERMIS AND GENETIC DIVERSITY OF CARAGANA DAVAZAMCII IN DIFFERENT HABITATS IN ERDOS PLATEAU, CHINA The Relationship Between Shrub Growth and Stoichiometry Characteristics of C.davazamcii and the Stability of Soil Substrates