Regenerative Role of Soil Seed Banks of Different Successional Stages in A Saline-alkaline Grassland in Northeast China
文献类型：期刊论文
| 作者 | H. Y. Ma, J. P. Li, F. Yang, X. T. Lu, Y. P. Pan and Z. W. Liang |
| 刊名 | Chinese Geographical Science
 |
| 出版日期 | 2018 |
| 卷号 | 28期号:4页码:694-706 |
| 通讯作者 | 马红媛 |
| 中文摘要 | Soil seed banks can act as a potential seed source for natural revegetation and restoration. However, in a saline-alkaline grassland, it remains unclear how the stages of vegetation succession affect the characteristics of soil seed banks and the potential of soil seed banks of different successional stages for vegetation restoration. In this study, seasonal changes of the soil seed bank, and seed production and dispersal dynamics along degradation successional gradients were investigated in a saline-alkaline grassland in Northeast China, where the dominant grass during the 1960s, Leymus chinensis was replaced with the secondary successional order of Puccinellia chinampoensis, Chloris virgata, and Suaeda salsa, together with bare patches. It was found that the soil seed bank composition varied according to the changing vegetation and had the highest species richness (7-16) in the climax successional stage, but had a low Sorensen similarity (0.22-0.37) with the aboveground vegetation. There was a high seed density of the soil seed bank (21 062-62 166/m(2) in August and December) and also high Sorensen similarity index values (0.47-0.60) in the secondary successional stages of P. chinampoensis, C. virgata, and S. salsa. In bare patches, there were many seeds in the soil seed bank and some seedlings also appeared in the aboveground vegetation, indicating the existence of a persistent soil seed bank. Seed density and species richness differed substantially among the different successional stages, which was related to the reproductive characteristics of the standing plants in vegetation communities. Due to the lack of propagules of perennial species, especially the climax species of L. chinensis, in the soil, the successful restoration of the degraded saline-alkaline grassland was not possible. The study proved that in a degraded saline-alkaline grassland dominated by biennial or annual species, the soil seed bank was important for the revegetation of the current dominant plants, but not for the restoration of the original target species. Therefore, it is necessary to induce seeds or other propagules of the target perennial species. |
| 源URL | [http://ir.iga.ac.cn/handle/131322/8878]  |
| 专题 | 东北地理与农业生态研究所_湿地生态系统管理学科组 |
| 推荐引用方式 GB/T 7714 | H. Y. Ma, J. P. Li, F. Yang, X. T. Lu, Y. P. Pan and Z. W. Liang. Regenerative Role of Soil Seed Banks of Different Successional Stages in A Saline-alkaline Grassland in Northeast China[J]. Chinese Geographical Science,2018,28(4):694-706. |
| APA | H. Y. Ma, J. P. Li, F. Yang, X. T. Lu, Y. P. Pan and Z. W. Liang.(2018).Regenerative Role of Soil Seed Banks of Different Successional Stages in A Saline-alkaline Grassland in Northeast China.Chinese Geographical Science,28(4),694-706. |
| MLA | H. Y. Ma, J. P. Li, F. Yang, X. T. Lu, Y. P. Pan and Z. W. Liang."Regenerative Role of Soil Seed Banks of Different Successional Stages in A Saline-alkaline Grassland in Northeast China".Chinese Geographical Science 28.4(2018):694-706. |
入库方式： OAI收割
来源：东北地理与农业生态研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。