双峰山国家森林公园植被恢复过程中的种子库研究

Study on Soil Seed Bank during Vegetation Restoration in Shuangfeng Mountain National Forest Park

对湖北双峰山国家森林公园不同类型植物群落土壤种子库的植物种类、密度及优势成分进行了研究,并结合群落植物种类,分析了该森林公园植被在生态恢复中的进程。结果表明,种子库中有植物30种,分属19科,其中绝大多数为草本植物;种子库储量为100～400粒/m2,其中上层土壤(0～5cm)种子数量占种子库总数的58.2%,种子库主要物种为莎草、淡竹叶、苎麻、绊根草、马唐等,地面植物与种子库植物的相似度不高,这表明双峰山国家森林公园植被正处于生态恢复的初级阶段。

Species, density and dominant composition of different forest communities in soil seed bank in Shuangfeng mountain national forest park were studied. Ecological restoration process of the vegetation in forest park was analyzed combing with plant species of communities. Preliminary research result showed that there were 30 species belonging to 19 families in the soil seed bank, most of which were herbaceous plant. The density of soil seed bank was 100~400 grain/ m2 and the seeds in upper layer （0~5cm） accounted for 58.2 %. The dominant species in soil seed bank included Cyperus rotundus, Lophatherum gracile, Boehmeria nivea., Cynodon dactylon, Digtaria sanguinalis and so on. The similarity coefficient between the ground plant and the plant in soil seed bank was relatively low, which indicated that the vegetation in Shuangfeng mountain national forest park was at the primary succession stage.