Transfering feature of geochemical elements on the vertical section of moss in Antarctic A Study on the Classification of Seed and Seedling Vigour of Larix gmelini Analysis on Natural Distribution and Related Factors of Tylenchulus semipenetrans in Fujian Province Investigation on Population Dynamics of Grape Phylloxera(Daktulosphairavitifoliae Fitch.)in Vineyards of Xi’an and Shanghai Investigation on Population Dynamics of Grape Phylloxera(Daktulosphairavitifoliae Fitch.)in Vineyards of Xi’an and Shanghai Distribution and characteristic of Chimonanthus germplasm in China