Alterations to biological soil crusts with alpine meadow retrogressive succession affect seeds germination of three plant species
文献类型：期刊论文
| 作者 | Li Yi-kang1,2; Ouyang Jing-zheng4; Lin Li1; Xu Xing-liang3; Zhang Fa-wei1,2; Du Yan-gong1; Liu Shu-li1,2; Cao Guang-min1; Han Fa1 |
| 刊名 | journal of mountain science
 |
| 出版日期 | 2016-11-01 |
| 卷号 | 13期号:11页码:1995-2005 |
| 关键词 | Crust type Seed position Microenvironment Germination Tibetan Plateau Vascular plants |
| 英文摘要 | biological soil crusts (bscs) are the important components of alpine meadow ecosystems. the extent and morphology of bscs vary greatly with alpine meadow retrogressive succession due to grazing pressure. there is significant interest in impacts of crust composition on plant seed germination, especially in (semi-) arid environments. however, little is known about the influences of bscs, and their associations with alpine meadow succession, on germination of typical alpine meadow vascular plant species. in a full factorial common-garden experiment, we studied effects of: (1) crust type, (2) seed position, and (3) surface texture on seed germination. we chose three typical alpine meadow plant species (i.e. poa pratensis, tibetia himalaica and potentillen nivea), which belonged to different functional groups (graminoids, legumes, and forbs) and play important roles in all alpine meadow succession stages. crust type and seed position influenced seed germination, and the inhibitory effects of bscs depended on the crust type and seed species tested. the major factors influencing seed germination were bsc type, seed position, soil texture, and the interactions between bsc type and seed position; species and seed position; species and surface texture; and species, crust type, and surface texture. cyanobacteria crust significantly inhibited germination of all seeds. seed position also had a significant effect on seed germination (p < 0.001). fewer seedlings germinated on the surface than below the surface, this was especially true for p. nivea. seeds within cyanobacteria and lichen crusts. only germination rates of t. himalaica on the soil surface were significantly correlated with plant occurrence frequency within the alpine meadow community. the poor correlation for the other two species is possibly that they are perennials. our results clearly demonstrated that bscs can be biological filters during seed germination, depending on the bsc succession stage. through their influences on seed germination, bscs can strongly influence community assemblages throughout alpine meadow retrogressive succession. |
| WOS标题词 | science & technology ; life sciences & biomedicine |
| 类目[WOS] | environmental sciences |
| 研究领域[WOS] | environmental sciences & ecology |
| 关键词[WOS] | vascular plants ; seedling establishment ; nitrogen-fixation ; desert plants ; negev desert ; disturbance ; emergence ; grasses ; israel ; degradation |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000387032600008 |
| 源URL | [http://ir.nwipb.ac.cn/handle/363003/6665]  |
| 专题 | 西北高原生物研究所_中国科学院西北高原生物研究所 |
| 作者单位 | 1.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining 810001, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 4.Liancheng Natl Nat Reserve Gansu Prov, Yongdeng Country 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li Yi-kang,Ouyang Jing-zheng,Lin Li,et al. Alterations to biological soil crusts with alpine meadow retrogressive succession affect seeds germination of three plant species[J]. journal of mountain science,2016,13(11):1995-2005. |
| APA | Li Yi-kang.,Ouyang Jing-zheng.,Lin Li.,Xu Xing-liang.,Zhang Fa-wei.,...&Han Fa.(2016).Alterations to biological soil crusts with alpine meadow retrogressive succession affect seeds germination of three plant species.journal of mountain science,13(11),1995-2005. |
| MLA | Li Yi-kang,et al."Alterations to biological soil crusts with alpine meadow retrogressive succession affect seeds germination of three plant species".journal of mountain science 13.11(2016):1995-2005. |
入库方式： OAI收割
来源：西北高原生物研究所
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