The hydraulic architecture of three Caragana species and its relationship with environmental factors in different habitats of the Inner Mongolia Plateau Interspecific Transition Among Caragana microphylla, C. davazamcii and C. korshinskii Along Geographic Gradient. Ⅰ. Ecological and RAPD Evidence Genetic diversity and genetic relationship of Caragana microphylla, Caragana davazamcii and Caragana korshinskii in Inner Mongolia Plateau