Floristic composition of vegetation and the soil seed bank in different types of dunes of Kerqin steppe
文献类型：期刊论文
| 作者 | Li, YL; Cui, JY; Zhao, XY; Zhao, HL |
| 刊名 | ARID LAND RESEARCH AND MANAGEMENT
 |
| 出版日期 | 2004-07-01 |
| 卷号 | 18期号:3页码:283-293 |
| 关键词 | China desertification germination Shannon-Weaver diversity species density |
| ISSN号 | 1532-4982 |
| DOI | 10.1080/15324980490451410 |
| 通讯作者 | Li, YL(liyleml@263.net) |
| 英文摘要 | The floristic composition of the vegetation and the soil seed bank in different types of dunes of Kerqin steppe were compared. The aim of this study was to examine the influence of desertfication on the floristic composition of the vegetation and soil seed bank. An indirect germination method was used to study the seed batik. Thirty species of the vegetation and 25 of the seed bank were identified, 23 species being common to both. Differences between four types of dunes (mobile sand dune, MSD; semifixed sand dune, SSD; fixed sand dune, FSD; interdunal lowland, ILD) in floristic composition of the vegetation and the soil seed bank were examined using nonparametric methods. In the four types of dune, species composition varied significantly except between site MSD and site SSD as well as between site FSD and site ILD in aboveground vegetation. As for soil seed bank, the number of species and seeds differed significantly only between site FSD and site ILD. Species diversity revealed that species numbers increased in the sequence of MSD, SSD, FSD and ILD. The dominant species of aboveground vegetation in site MSD and site SSD were Agriophyllum squarrosum and Setaria viridis, respectively. While in both site FSD and site ILD, the dominant was Eragrostis pilosa. Of total germinated seed, the most abundant species in site MSD were Agriophyllum squarrosum, but the dominant species was Eragrostis pilosa in the other three sites. In each site, more than half of the species recorded in aboveground vegetation were found in the seed bank, even more in the seed bank of site FSD and site ILD. In site FSD and site ILD, high correspondence was observed between the species composition of the aboveground vegetation and of the associated soil seed bank. Spearman's rank correlation coefficients were 0.295, 0.046, 0.704, and 0.612 for site MSD, site SSD, site FSD and site ILD, respectively. These results indicated that desertification development decreased correlation between the seed bank and vegetation in Kerqin Steppe. |
| 收录类别 | SCI |
| WOS关键词 | GRASSLAND ; DISTURBANCE ; COMMUNITY ; PATTERNS |
| WOS研究方向 | Environmental Sciences & Ecology ; Agriculture |
| WOS类目 | Environmental Sciences ; Soil Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000223043200007 |
| 出版者 | TAYLOR & FRANCIS INC |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2555630 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Li, YL |
| 作者单位 | Chinese Acad Sci, Cold & Arid Reg environm & Engn Res Inst, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, YL,Cui, JY,Zhao, XY,et al. Floristic composition of vegetation and the soil seed bank in different types of dunes of Kerqin steppe[J]. ARID LAND RESEARCH AND MANAGEMENT,2004,18(3):283-293. |
| APA | Li, YL,Cui, JY,Zhao, XY,&Zhao, HL.(2004).Floristic composition of vegetation and the soil seed bank in different types of dunes of Kerqin steppe.ARID LAND RESEARCH AND MANAGEMENT,18(3),283-293. |
| MLA | Li, YL,et al."Floristic composition of vegetation and the soil seed bank in different types of dunes of Kerqin steppe".ARID LAND RESEARCH AND MANAGEMENT 18.3(2004):283-293. |
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来源：寒区旱区环境与工程研究所
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