| Species diversity and vegetation distribution in nebkhas of Nitraria tangutorum in the Desert Steppes of China | |
| Zhou, Hai1,2; Zhao, Wen-Zhi1; Luo, Wei-Cheng1,2; Liu, Bing1 | |
| 刊名 | ECOLOGICAL RESEARCH
 |
| 2015-07-01 | |
| 卷号 | 30期号:4页码:735-744 |
| 关键词 | Nebkha size Nebkha microsites Soil moisture Microheterogeneity Species composition |
| ISSN号 | 0912-3814 |
| DOI | 10.1007/s11284-015-1277-z |
| 通讯作者 | Zhao, Wen-Zhi(zhaowzh@lzb.ac.cn) |
| 英文摘要 | Nebkhas (phytogenic miniature dunes) are mounds composed of wind-borne sediment within or around shrub canopies and often develop under plants, creating microenvironments that affect the distribution of vegetation. In our study we investigated the vegetation of 397 nebkhas populated with the shrub Nitraria tangutorum in Yanchi County, in the northwest of China. We measured nebkha size (height, width and length) and soil moisture (from 0 to 100 cm). Distinct microsites of each nebkha (crest, mid-slope, bottom, edge and internebkha space) were identified and plant species diversity was also measured. Four vegetation groups (N. tangutorum-Chloris virgata + Eragrostis pilosa, N. tangutorum Artemisia scoparia, N. tan gutorum-Salsola collina + Bassia dasyphylla, N. tangutorum Agriophyllum squarrosum) were described by two way indicator species analysis (TWINSPAN) on the basis of classification and, concomitantly, the relationships between species composition and environmental gradients were explained by canonical correspondence analysis (CCA). Regression analysis indicated that as height and area of the nebkhas increased, species richness increased linearly, while the other species diversity indices (Simpson index, Pielou index and Shannon-Wiener evenness index) increased logarithmically. The response of species richness to heterogeneity of the microenvironment resulted from the four aspects (east, south, north and west) of the nebkhas, and varied among the different microsites of the nebkhas. Species composition was correlated with spatial variability in soil moisture along the gradient from the nebkha crest to the internebkha space. It appeared that the microheterogeneity of the nebkhas promoted the abundance of plant species. |
| 收录类别 | SCI |
| WOS关键词 | PLANT COMMUNITY-DEVELOPMENT ; DUNE SLACK SUCCESSION ; SAND BURIAL ; SEEDLING EMERGENCE ; PHYTOGENIC MOUNDS ; CHIHUAHUAN DESERT ; SOIL ; MICROTOPOGRAPHY ; RESTORATION ; GRASSLAND |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Ecology |
| 语种 | 英语 |
| 出版者 | SPRINGER JAPAN KK |
| WOS记录号 | WOS:000362924100019 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2557007 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Zhao, Wen-Zhi |
| 作者单位 | 1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lab Inland River Ecohydrol, Linze Inland River Basin Res Stn, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Hai,Zhao, Wen-Zhi,Luo, Wei-Cheng,et al. Species diversity and vegetation distribution in nebkhas of Nitraria tangutorum in the Desert Steppes of China[J]. ECOLOGICAL RESEARCH,2015,30(4):735-744. |
| APA | Zhou, Hai,Zhao, Wen-Zhi,Luo, Wei-Cheng,&Liu, Bing.(2015).Species diversity and vegetation distribution in nebkhas of Nitraria tangutorum in the Desert Steppes of China.ECOLOGICAL RESEARCH,30(4),735-744. |
| MLA | Zhou, Hai,et al."Species diversity and vegetation distribution in nebkhas of Nitraria tangutorum in the Desert Steppes of China".ECOLOGICAL RESEARCH 30.4(2015):735-744. |
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