| 图们江下游湿地土壤种子库特征研究 |
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| 引用本文： | 李莹,黄微,何磊,朱卫红.图们江下游湿地土壤种子库特征研究[J].延边大学理工学报,2011(3):257-263. |
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| 作者姓名： | 李莹 黄微 何磊 朱卫红 |
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| 作者单位： | [1]长白山生物资源与功能分子教育部重点实验室（延边大学）,吉林延吉133002 [2]延边大学理学院地理系,吉林延吉133002 |
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| 基金项目： | 国家自然科学基金资助项目（40961011）; 遥感科学国家重点实验室开放研究基金资助项目（[2009]KFJJ010） |
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| 摘 要： | 为对图们江下游湿地土壤种子库的物种组成、数量、物种多样性、相似性指数以及时空分布等特征进行分析,选取了图们江下游3个切面的河岸样地进行野外调查及选取样地采样,并采用种子萌发实验确定了土壤种子库的种类和数量.结果表明：图们江下游河流湿地种子库共有植被物种19种,种子库的密度最大为17 750粒/m2,最小为1 953粒/...
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| 关 键 词： | 土壤种子库 图们江下游湿地 地表植被 物种多样性特征 |
The Characteristics of Soil Seed Banks in the Wetland in the Downstream Region of Tumen River |
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| LI Ying,HUANG Wei,He Lei,ZHU Wei-hong.The Characteristics of Soil Seed Banks in the Wetland in the Downstream Region of Tumen River[J].Journal of Yanbian University (Natural Science),2011(3):257-263. |
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| Authors: | LI Ying HUANG Wei He Lei ZHU Wei-hong |
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| Affiliation: | 1.Key Laboratory of Natural Resources of Changbai Mountain ＆ Functional Molecules(Yanbian University),Ministry of Education,Yanji 133002,China;2.Department of Geography,College of Science,Yanbian University,Yanji 133002,China) |
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| Abstract: | This paper conducted researches on typical wetlands soil seed banks（SSB） in the downstream region of Tumen River and analyzed the composition,diversity and temporal and spatial distribution of SSB in three standard plots through field investigation and germinated seeds.The results showed that there are 19 species in the SSB,with species density 1953-17750/m2 and ecological dominance 0.63-0.84.The diversity index show a relatively low value,and the highest Shannon-Wiener value is 2.30.Vertical distribution demonstrated significantly obvious condition with 0-5cm having the most species.Furthermore,we studied the rules of germination of SSB changes,and got its germination number increased as a ＂S＂ curve growth. |
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| Keywords: | soil seed bank the downstream region of Tumen River Wetland aboveground vegetations species diversity characteristics |
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