Arid
DOI10.1016/j.catena.2015.09.011
Growth stages affect species richness and vegetation patterns of nebkhas in the desert steppes of China
Luo, Weicheng; Zhao, Wenzhi; Liu, Bing
通讯作者Zhao, Wenzhi
来源期刊CATENA
ISSN0341-8162
EISSN1872-6887
出版年2016
卷号137页码:126-133
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.


英文关键词Desert steppes Nebkha growth stage Neblcha morphology Species composition Species growth form
类型Article
语种英语
国家Peoples R China
收录类别SCI-E
WOS记录号WOS:000367635800015
WOS关键词PLANT INTERACTIONS ; MORPHOLOGICAL-CHARACTERISTICS ; PHYTOGENIC MOUNDS ; LAND DEGRADATION ; INNER-MONGOLIA ; COPPICE DUNE ; WIND EROSION ; DYNAMICS ; DIVERSITY ; HETEROGENEITY
WOS类目Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向Geology ; Agriculture ; Water Resources
来源机构中国科学院西北生态环境资源研究院
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/191968
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]. 中国科学院西北生态环境资源研究院,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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