Chemical constituents of Tibetan herbal medicine Sibiraea laevigata Effect of Grazing Interference on the Architecture of Sibiraea angustata in the Eastern Qinghai Tibetan Plateau Protective Effects of Liu Tea on CCl4Injured Liver and Its Working Mechanism Effect of polysaccharides in processed Sibiraea on immunologic function of immunosuppression mice The Community Types and Biomass of Sibiraea angustata Scrub and Their Relationship with Environmental Factors in Northwestern Sichuan Effects of snow cover on the decomposition and nutrient dynamics of Sibiraea angustata leaf litter in western Sichuan plateau, Southwest China. Effects of nitrogen addition on soil respiration of Sibiraea angustata shrub in the eastern margin of Qinghai-Tibetan Plateau STUDIES ON THE CHEMICAL CONSTITUENTS OF SIBIRAEA ANGUSTATA Demography History and Genetic Divergence of Sibiraea laevigata(Rosaceae) Based on Chalcone Synthase Gene Characteristic of Molecular Evolution of Sibiraea angustata Based on nrDNA ITS and cpDNA trnL-F Sequence Analysis