Distribution patterns of shrubby N-fixers and non-N fixers in an arid valley in Southwest China: implications for ecological restoration
文献类型：期刊论文
| 作者 | Song, Cheng Jun; Ma, Ke Ming; Fu, Bo Jie; Qu, Lai Ye; Xu, Xian Li; Liu, Yang; Zhong, Jian Fei |
| 刊名 | ECOLOGICAL RESEARCH
 |
| 出版日期 | 2010-05 |
| 卷号 | 25期号:3页码:553-564 |
| 关键词 | Arid region Species distribution Legume shrub Restoration species selection Ecological restoration |
| 中文摘要 | Shrubs play different key roles in arid regions. Comparisons of shrubs and their site adaptability are essential for correct selection of candidates in developing restoration theory and practice. A survey of topography, soil properties and shrub composition was conducted in fifty-seven 5-m x 5-m plots in an arid valley of the upper Minjiang River, Southwest China. With cluster analysis and critical examinations based on edaphic properties, soil was classified into three groups: dry cinnamon soils (DCS), calcareous cinnamon soils (CCS) and eluvial-accumulation cinnamon soils (EACS). EACS had the highest fertility level, DCS the next and CCS the lowest level. For non-N fixers, soil moisture is the primary limiting factor, and nitrogen the next. However, N-fixers are weakly constrained by soil moisture and nitrogen, the extent of which is species-specific. N-fixers had a significantly higher cumulative relative importance value (44.4%) in CCS than in DCS (34.0%) and EACS (17.3%). The results suggest that it would be reasonable to restore non-N fixers in DCS and EACS and that N-fixers are appropriate for CCS. Compared with grass, shrubs significantly enhanced the availability of nitrogen and phosphorus and soil electric conductivity, and significantly decreased the soil C/N ratio. The median fertility level of soil dominated by N-fixers indicates that N-fixers are suitable driver candidates from grassland to non-N-fixing shrub land. Four native shrubby legumes (Indigofera amblyantha, Sorphora viciifolia, Desmodium podocarpum and Bauhinia faberivar) and one soil-conserving shrub (Ajania potaninii) are the top-priority pioneers for ecological restoration. |
| WOS记录号 | WOS:000277596100007 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/20960]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Song, Cheng Jun,Ma, Ke Ming,Fu, Bo Jie,et al. Distribution patterns of shrubby N-fixers and non-N fixers in an arid valley in Southwest China: implications for ecological restoration[J]. ECOLOGICAL RESEARCH,2010,25(3):553-564. |
| APA | Song, Cheng Jun.,Ma, Ke Ming.,Fu, Bo Jie.,Qu, Lai Ye.,Xu, Xian Li.,...&Zhong, Jian Fei.(2010).Distribution patterns of shrubby N-fixers and non-N fixers in an arid valley in Southwest China: implications for ecological restoration.ECOLOGICAL RESEARCH,25(3),553-564. |
| MLA | Song, Cheng Jun,et al."Distribution patterns of shrubby N-fixers and non-N fixers in an arid valley in Southwest China: implications for ecological restoration".ECOLOGICAL RESEARCH 25.3(2010):553-564. |
入库方式： OAI收割
来源：生态环境研究中心
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。