干旱区生态环境知识资源中心(Arid): Asymmetric responses of plant community structure and composition to precipitation variabilities in a semi-arid steppe

Arid

DOI	10.1007/s00442-019-04520-y
	Asymmetric responses of plant community structure and composition to precipitation variabilities in a semi-arid steppe
	Zhong, Mingxing 1; Song, Jian 2; Zhou, Zhenxing 1; Ru, Jingyi 1; Zheng, Mengmei 1; Li, Ying 1; Hui, Dafeng 3; Wan, Shiqiang 1,2
通讯作者	Wan, Shiqiang
来源期刊	OECOLOGIA
ISSN	0029-8549
EISSN	1432-1939
出版年	2019
卷号	191 期号:3 页码:697-708
英文摘要	Changing precipitation regimes can profoundly affect plant growth in terrestrial ecosystems, especially in arid and semi-arid regions. However, how changing precipitation, especially extreme precipitation events, alters plant diversity and community composition is still poorly understood. A 3-year field manipulative experiment with seven precipitation treatments, including - 60%, - 40%, - 20%, 0% (as a control), + 20%, + 40%, and + 60% of ambient growing-season precipitation, was conducted in a semi-arid steppe in the Mongolian Plateau. Results showed total plant community cover and forb cover were enhanced with increased precipitation and reduced under decreased precipitation, whereas grass cover was suppressed under the - 60% treatment only. Plant community and grass species richness were reduced by the - 60% treatment only. Moreover, our results demonstrated that total plant community cover was more sensitive to decreased than increased precipitation under normal and extreme precipitation change, and species richness was more sensitive to decreased than increased precipitation under extreme precipitation change. The community composition and low field water holding capacity may drive this asymmetric response. Accumulated changes in community cover may eventually lead to changes in species richness. However, compared to control, Shannon-Weiner index (H) did not respond to any precipitation treatment, and Pielou's evenness index (E) was reduced under the + 60% treatment across the 3 year, but not in each year. Thus, the findings suggest that plant biodiversity in the semi-arid steppe may have a strong resistance to precipitation pattern changes through adjusting its composition in a short term.
英文关键词	Dominated species Extreme precipitation Functional groups Sensitivity Species richness
类型	Article
语种	英语
国家	Peoples R China ; USA
收录类别	SCI-E
WOS记录号	WOS:000489456900001
WOS关键词	NET PRIMARY PRODUCTIVITY ; CLIMATE-CHANGE ; EXTREME PRECIPITATION ; CARBON ASSIMILATION ; NITROGEN ADDITION ; GRASSLAND ; DROUGHT ; ECOSYSTEMS ; DIVERSITY ; TEMPERATURE
WOS类目	Ecology
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/217813
作者单位	1.Henan Univ, Coll Life Sci, Int Joint Res Lab Global Change Ecol, Kaifeng 475004, Henan, Peoples R China; 2.Hebei Univ, Coll Life Sci, Baoding 071002, Hebei, Peoples R China; 3.Tennessee State Univ, Dept Biol Sci, Nashville, TN 37209 USA
推荐引用方式 GB/T 7714	Zhong, Mingxing,Song, Jian,Zhou, Zhenxing,et al. Asymmetric responses of plant community structure and composition to precipitation variabilities in a semi-arid steppe[J],2019,191(3):697-708.
APA	Zhong, Mingxing.,Song, Jian.,Zhou, Zhenxing.,Ru, Jingyi.,Zheng, Mengmei.,...&Wan, Shiqiang.(2019).Asymmetric responses of plant community structure and composition to precipitation variabilities in a semi-arid steppe.OECOLOGIA,191(3),697-708.
MLA	Zhong, Mingxing,et al."Asymmetric responses of plant community structure and composition to precipitation variabilities in a semi-arid steppe".OECOLOGIA 191.3(2019):697-708.