浙江天童灌丛植被的土壤种子库与幼苗库特征

Characteristics of Soil Seed Bank and Seedling Bank of Shrubland in Tiantong Range, Zhejiang Province

采用野外样点取样和萌发实验相结合的办法，研究浙江天童灌丛植被的幼苗库和种子库。结果表明：种子库中优势种类主要是淡竹叶、芒、苔草等草本植物，其次为山矾、 木、白栎等灌木种类。在厚度为１０ｃｍ的表层土壤中，枯枝落叶层、 ０～２ｃｍ层、２～４ｃｍ层、 ４～１０ ｃｍ层的种子密度分别为 １２５．０粒／ｍ２、 １３４．３粒／ｍ２、８４.６２粒／ｍ２、 ６２．７粒／ｍ２。幼苗库的优势种类不太集中，数量较多的种类有苦槠、紫金牛、淡竹叶等。

The soil seed banks in the soil of 10 cm and seedling banks of shrhbland in Tiantong Range, Zhejiang Province were studied in this paper by using methods of sampling quadrats and germinating . The re- sults showed that the seed densities in the litter layer,0-2cm,2-4 cm and 4-10 cm were 125.0 seeds/ m2, 134.3 seeds/m2, 84.6 and 62.7 seeds/m2 respectively.The dominant species of the seed banks were mainly herb plants,e.g. Lophatherum gracile,Miscanthus sinensis,Carex sp.,and some shrub plants,e.g. Symplocos sumuntia,Loropetalum chinese and Quercus fabri .It could be drawn from the studies on the seedling bank that the dominant species, such as Castanopsis sclerophylla, Ardisia Japonica and Lophatherum gracile,were not outstanding.