Influence of grazing intensity on seed bank of a sandy grassland in Horqin Steppe of China
文献类型：期刊论文
| 作者 | Zhao, WZ; Liu, ZM; Chang, XL |
| 刊名 | ANNALS OF ARID ZONE
 |
| 出版日期 | 2001-12-01 |
| 卷号 | 40期号:4页码:397-404 |
| 关键词 | The Horqin Steppe seed bank seed density seed composition species composition |
| ISSN号 | 0570-1791 |
| 通讯作者 | Zhao, WZ() |
| 英文摘要 | It is well known that grazing influences the quantity and quality of grassland seed banks, and that the magnitude of influence depends on the grazing intensity and the bioclimate zone in which the grassland is located. However, very little is known about seed bank dynamics under different grazing intensities in a sandy grassland of Horqin Steppe. In this study four grazing intensity treatments, i.e., control (ungrazed, CK), light grazing (2 sheep unit ha(-1), L), moderate grazing (4 sheep unit ha(-1), M), and heavy grazing (6 sheep unit ha(-1), H), were imposed on a sandy range site. The results showed that: (i) with the increase of grazing intensity, the number of plant species in the seed bank decreased, but the percentage of annual species increased; (ii) the number of seed bank under both light grazing and moderate grazing tended to increase, but under heavy grazing it tended to decrease; (iii) annual species dominated the seed bank, and with increased grazing intensity, the percentage of the number of seeds of annual species decreased, but that. of leguminous plants increased; (iv) under the ungrazed and light grazing conditions the seed density in soil showed a significant correlation with the corresponding plant frequency in the vegetation, whereas under moderate and heavy grazing conditions such correlation was poor. |
| 收录类别 | SCI |
| WOS关键词 | SOIL ; PATTERNS |
| WOS研究方向 | Science & Technology - Other Topics |
| WOS类目 | Multidisciplinary Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000183353000001 |
| 出版者 | ARID ZONE RESEARCH ASSOC INDIA |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2556726 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Zhao, WZ |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, WZ,Liu, ZM,Chang, XL. Influence of grazing intensity on seed bank of a sandy grassland in Horqin Steppe of China[J]. ANNALS OF ARID ZONE,2001,40(4):397-404. |
| APA | Zhao, WZ,Liu, ZM,&Chang, XL.(2001).Influence of grazing intensity on seed bank of a sandy grassland in Horqin Steppe of China.ANNALS OF ARID ZONE,40(4),397-404. |
| MLA | Zhao, WZ,et al."Influence of grazing intensity on seed bank of a sandy grassland in Horqin Steppe of China".ANNALS OF ARID ZONE 40.4(2001):397-404. |
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来源：寒区旱区环境与工程研究所
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