CAJ | 학술논문

　　通过野外样方调查、种子鉴定及种子发芽等相结合的方式，对天然沙冬青种群种子库进行研究，以期揭示天然沙冬青土壤种子库特征及与种群更新之间的关系。研究结果显示，天然沙冬青种群土壤种子库比较丰富，平均密度为11粒/m2；种子主要存在于土壤表层，在有结皮存在的情况下，种子才有可能存在于0~2 cm土层中，以下土层没有种子；沙冬青种子发芽率与土壤种子库呈负相关，种子库丰富的地方，种子的发芽率较低，这一对矛盾造成幼苗数量的稀少，进而影响天然沙冬青种群的自然更新。
　　통과야외양방조사、충자감정급충자발아등상결합적방식，대천연사동청충군충자고진행연구，이기게시천연사동청토양충자고특정급여충군경신지간적관계。연구결과현시，천연사동청충군토양충자고비교봉부，평균밀도위11립/m2；충자주요존재우토양표층，재유결피존재적정황하，충자재유가능존재우0~2 cm토층중，이하토층몰유충자；사동청충자발아솔여토양충자고정부상관，충자고봉부적지방，충자적발아솔교저，저일대모순조성유묘수량적희소，진이영향천연사동청충군적자연경신。
This article researched on soil seed bank of Ammopiptanthus mongolicus by a combination way of quadrates survey, seed identification, germination, to reveal the feature of soil seed bank and the relationship between the soil seed banks and population regeneration. The results showed: the soil seed bank of Ammopiptanthus mongolicus was relatively rich, the average density was 11 seeds/m2. The seed mainly present on the soil surface. It is possible that there were some seeds in 0-2 cm depth soil if crust exists, there was no seed below that. Seed germination rate and soil seed bank was negatively correlated. A place with high soil seed bank, but had low seed germination rate. This contradiction leads scarce seedling, and then impacts the population regeneration of it.