Patterns of shrub species richness and abundance in relation to environmental factors on the Alxa Plateau: Prerequisites for conserving shrub diversity in extreme arid desert regions
文献类型：期刊论文
| 作者 | Li XinRong; Tan HuiJuan; He MingZhu; Wang XinPing; Li XiaoJun |
| 刊名 | SCIENCE IN CHINA SERIES D-EARTH SCIENCES
 |
| 出版日期 | 2009-05-01 |
| 卷号 | 52期号:5页码:669-680 |
| 关键词 | biodiversity conservation shrub species richness abundance Alxa Plateau desert ecosystems |
| ISSN号 | 1006-9313 |
| DOI | 10.1007/s11430-009-0054-7 |
| 通讯作者 | Li XinRong(Lxinrong@lzb.ac.cn) |
| 英文摘要 | Shrub species are considered the dominant plants in arid desert ecosystems, unlike in semiarid steppe zones or in grassland ecosystems. On the Alxa Plateau, northern China, sparse vegetation with cover ranging from 15% to 30% is characterized mainly by multifarious shrubs because herbaceous species are strongly restricted by the extreme drought climate, wind erosion, overgrazing and sand burial. Patterns in shrub species richness and species abundance in relation to environmental conditions were examined by DCA (detrended correspondence analysis) and interpreted by a biplot. The relationships between species diversity and environmental factors were examined using regression analyses. Our results show that the distributions of the shrub species in response to environmental conditions can be grouped into four ecological types, corresponding with the biological traits of the shrubs and their responses to the gradients of soil texture and soil water content. Patterns in species richness and species abundance were mainly determined by the deeper soil water content, instead of the soil texture as hypothesized by numerous studies in semiarid grasslands. With exception of the deeper soil water content, soil organic matter and total N content were positively correlated with species abundance, while pH was negatively correlated with it. These findings imply that it is vital for current shrub diversity conservation to reduce agricultural water use in the middle reaches of the Heihe River, which supplies water for the lower reaches in the western parts of the plateau, and to reduce the amount of groundwater exploitation and urban and oasis water use, to increase the water supply from Helan Mountain to the eastern desert of the Alxa Plateau. |
| 收录类别 | SCI |
| WOS关键词 | SPATIAL HETEROGENEITY ; VEGETATION PATTERNS ; SOIL PROPERTIES ; ECOSYSTEM ; COMMUNITY ; BIODIVERSITY ; RESPONSES ; FOREST ; CHINA |
| WOS研究方向 | Geology |
| WOS类目 | Geosciences, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000265924500010 |
| 出版者 | SCIENCE PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2556144 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Li XinRong |
| 作者单位 | Chinese Acad Sci, Cold & Arid Regions Environm & Engn Res Inst, Shapotou Desert Res & Expt Stn, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li XinRong,Tan HuiJuan,He MingZhu,et al. Patterns of shrub species richness and abundance in relation to environmental factors on the Alxa Plateau: Prerequisites for conserving shrub diversity in extreme arid desert regions[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2009,52(5):669-680. |
| APA | Li XinRong,Tan HuiJuan,He MingZhu,Wang XinPing,&Li XiaoJun.(2009).Patterns of shrub species richness and abundance in relation to environmental factors on the Alxa Plateau: Prerequisites for conserving shrub diversity in extreme arid desert regions.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,52(5),669-680. |
| MLA | Li XinRong,et al."Patterns of shrub species richness and abundance in relation to environmental factors on the Alxa Plateau: Prerequisites for conserving shrub diversity in extreme arid desert regions".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 52.5(2009):669-680. |
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来源：寒区旱区环境与工程研究所
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