干旱区生态环境知识资源中心(Arid): Role of seed bank in aboveground vegetation regeneration signal ecosystem transition from arid grassland to shrubland with decreasing soil moisture

Arid

DOI	10.1007/s11104-021-05044-2
	Role of seed bank in aboveground vegetation regeneration signal ecosystem transition from arid grassland to shrubland with decreasing soil moisture
	Zhao, Yunpeng; Du, Guozhen; Qi, Wei; An, Hang; Wang, Lipei; Luo, Shuaiwei; Ma, Beibei; Ma, Miaojun
通讯作者	Ma, MJ (corresponding author), Lanzhou Univ, Sch Life Sci, State Key Lab Grassland & Agroecosyst, Lanzhou 730000, Gansu, Peoples R China.
来源期刊	PLANT AND SOIL
ISSN	0032-079X
EISSN	1573-5036
出版年	2021
卷号	466 期号:1-2 页码:193-205
英文摘要	Aims This study aimed to evaluate the role of seed bank during ecosystem transitions from arid grassland to shrubland. Methods We explored the aboveground vegetation, seed bank and soil environmental factors at 29 sites along a moisture gradient that served as a space-for-time substitution in the Qaidam Basin on the Tibetan Plateau to test whether changes seed bank composition or changes in the ability of the seed bank to restore aboveground vegetation could lead to ecosystem transition. Results We found that the composition of the aboveground vegetation presented nonlinear changes with decreased soil moisture and showed an inflection point in the threshold zone on the spatial scale of ecosystem transition from arid grassland to shrubland; however, an inflection point was not observed for the seed bank. Surprisingly, we also found the similarity between the aboveground vegetation and seed bank decreased obviously when soil moisture crosses the critical threshold. Conclusions Our results suggest that the transition from arid grassland to shrubland ecosystem is not caused by changes of the seed bank composition but by the inhibition of the seed bank's restorability to aboveground vegetation. Future work on changes in vegetation composition and species diversity with ecosystem transitions should consider the belowground seed bank.
英文关键词	Arid grassland Ecosystem transition Shrubland Soil seed bank Soil moisture Threshold
类型	Article
语种	英语
开放获取类型	Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000663979100003
WOS关键词	QAIDAM BASIN ; ECOLOGICAL THRESHOLDS ; CLIMATE-CHANGE ; DESERTIFICATION ; ENCROACHMENT ; RESTORATION ; DIVERSITY ; EVOLUTION ; FRAMEWORK ; DYNAMICS
WOS类目	Agronomy ; Plant Sciences ; Soil Science
WOS研究方向	Agriculture ; Plant Sciences
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/352427
作者单位	[Zhao, Yunpeng; Du, Guozhen; Qi, Wei; An, Hang; Wang, Lipei; Luo, Shuaiwei; Ma, Beibei; Ma, Miaojun] Lanzhou Univ, Sch Life Sci, State Key Lab Grassland & Agroecosyst, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Yunpeng,Du, Guozhen,Qi, Wei,et al. Role of seed bank in aboveground vegetation regeneration signal ecosystem transition from arid grassland to shrubland with decreasing soil moisture[J]. 兰州大学,2021,466(1-2):193-205.
APA	Zhao, Yunpeng.,Du, Guozhen.,Qi, Wei.,An, Hang.,Wang, Lipei.,...&Ma, Miaojun.(2021).Role of seed bank in aboveground vegetation regeneration signal ecosystem transition from arid grassland to shrubland with decreasing soil moisture.PLANT AND SOIL,466(1-2),193-205.
MLA	Zhao, Yunpeng,et al."Role of seed bank in aboveground vegetation regeneration signal ecosystem transition from arid grassland to shrubland with decreasing soil moisture".PLANT AND SOIL 466.1-2(2021):193-205.