Growth stages affect species richness and vegetation patterns of nebkhas in the desert steppes of China
文献类型：期刊论文
| 作者 | Luo, Weicheng; Zhao, Wenzhi; Liu, Bing |
| 刊名 | CATENA
 |
| 出版日期 | 2016-02-01 |
| 卷号 | 137页码:126-133 |
| 关键词 | Desert steppes Nebkha growth stage Neblcha morphology Species composition Species growth form |
| ISSN号 | 0341-8162 |
| DOI | 10.1016/j.catena.2015.09.011 |
| 通讯作者 | Zhao, Wenzhi(zhaowzh@lzb.ac.cn) |
| 英文摘要 | Nebkhas are important indicators of land degradation in desert steppes and play an important role in the ecological and evolutionary dynamics of desert steppe ecosystems. This study examined the relationship between the diversity of plant species and nebkha morphology during different growth stages of the nebkhas. In this study, each nebkha is defined as a self-contained unit. The species composition and vegetation patterns within each unit during different stages of formation were investigated, while also the plant species within the internebkha area of the desert steppe field were examined. Results show that more than 90% of the species within the nebkha units were herbaceous. In developing nebkhas, the increase in nebkha size was associated with an increase in the herb species richness but a decrease in the overall plant density. When nebkha size was constant, similar correlations with species richness or density were found. The richness of species within the internebkha area was significantly higher compared to developing nebkhas during periods of growth, but lower when nebkha development was complete and growth hadstalled. The density of species was significantly higher in the nebkhas than the inter-nebkha area during all developmental periods. Thus, nebkhas provide a highly favorable condition for plant recruitment and survival when fully developed. However, when nebkhas are still forming, the inter-nebldia areas provide greater plant support. These results have important implications to biodiversity conservation in desert steppe fields. (C) 2015 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | SOUTHERN NEW-MEXICO ; PLANT INTERACTIONS ; MOJAVE DESERT ; MORPHOLOGICAL-CHARACTERISTICS ; ENVIRONMENTAL-CHANGE ; PHYTOGENIC MOUNDS ; LAND DEGRADATION ; INNER-MONGOLIA ; BURKINA-FASO ; COPPICE DUNE |
| WOS研究方向 | Geology ; Agriculture ; Water Resources |
| WOS类目 | Geosciences, Multidisciplinary ; Soil Science ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000367635800015 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2557117 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Zhao, Wenzhi |
| 作者单位 | Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Key Lab Inland River Basin Ecohydrol, Linze Inland River Basin Res Stn, Lanzhou, Peoples R China |
| 推荐引用方式 GB/T 7714 | Luo, Weicheng,Zhao, Wenzhi,Liu, Bing. Growth stages affect species richness and vegetation patterns of nebkhas in the desert steppes of China[J]. CATENA,2016,137:126-133. |
| APA | Luo, Weicheng,Zhao, Wenzhi,&Liu, Bing.(2016).Growth stages affect species richness and vegetation patterns of nebkhas in the desert steppes of China.CATENA,137,126-133. |
| MLA | Luo, Weicheng,et al."Growth stages affect species richness and vegetation patterns of nebkhas in the desert steppes of China".CATENA 137(2016):126-133. |
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来源：寒区旱区环境与工程研究所
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