Characteristic chromatographic profile of Zanthoxylum niridum Study on the Flora Comparison of Partial Areas in China Study on Phenology of Some Tree Species Grown in the Tropical Arboretum at Jianfengling of Hainan lsland Study on UPLC-UV-ELSD fingerprint for roots of Panax quinquefolius The Vegetation and its Indicative Siguificance to the Habital Types in Joulong Mountain Area, Beijing