Increased rainfall and nitrogen alter colonization and extinction during postgrazing steppe succession

doi:10.1111/jvs.12698

	Increased rainfall and nitrogen alter colonization and extinction during postgrazing steppe succession
	Yu, Hong-Wei ; He, Wei-Ming
	2019
发表期刊	JOURNAL OF VEGETATION SCIENCE
ISSN	1100-9233
卷号	30 期号:1 页码:75-85
摘要	Question Steppes may be sensitive to rainfall and nitrogen (N) pulses; however, their potential effects on local colonization and extinction during postgrazing steppe succession have not been thoroughly elucidated to date. We addressed how increased rainfall and N influenced plant species richness, gain, loss, and turnover in an ungrazed steppe. Location Northeastern Inner Mongolia, China. Methods We performed a five-growing-season field experiment, in which an ungrazed steppe was subject to nine different combinations of rainfall and N. The three rainfall levels were ambient amount of rainfall, a 14% increase in amount of rainfall, and a 28% increase in amount of rainfall; the three N levels were no N addition, an addition of 5 g N m(-2) year(-1), and an addition of 10 g N m(-2) year(-1). We determined successional changes at the taxonomic and functional levels by surveying plant species in the first and fifth growing seasons. Results (a) Increased rainfall and N addition did not affect plant species richness but did influence plant species loss, gain, and turnover. (b) At the taxonomic level, species loss, gain, and turnover decreased monotonically with increasing rainfall; N addition decreased species loss and turnover but did not influence species gain; the slope of the species loss-gain relation was approximately 1.0. (c) At the plant functional group level, increased rainfall favored C-3 plants by sustaining species gain and decreasing species loss; N addition favored C-4 plants by increasing the species gain and decreasing the species loss. Conclusion Increased rainfall and simulated N deposition could induce rapid colonization and extinction during postgrazing steppe succession, but maintain plant diversity homeostasis by equally affecting species colonization and extinction. Future rainfall enrichment and N deposition might strongly influence the relative abundance of different plant functional groups, thereby affecting successional changes under global change.
关键词	nitrogen deposition postgrazing steppe succession rainfall amount species gain species loss species richness species turnover
学科领域	Plant Sciences ; Ecology ; Forestry
DOI	10.1111/jvs.12698
收录类别	SCI
语种	英语
WOS关键词	STRESS-GRADIENT HYPOTHESIS ; PLANT COMMUNITY RESPONSES ; SPECIES RICHNESS ; ECOSYSTEM RESPONSES ; TEMPORAL VARIATION ; SOIL-MOISTURE ; GRASSLAND ; WATER ; PRECIPITATION ; DIVERSITY
WOS研究方向	Plant Sciences ; Environmental Sciences & Ecology ; Forestry
WOS记录号	WOS:000459812100008
出版者	WILEY
文献子类	Article
出版地	HOBOKEN
EISSN	1654-1103
资助机构	Ministry of Science and Technology of the People's Republic of ChinaMinistry of Science and Technology, China [2017YFC1200102] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31570538]
作者邮箱	weiminghe@ibcas.ac.cn
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/19635
专题	植被与环境变化国家重点实验室
作者单位	1.[Yu, Hong-Wei 2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China 3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Yu, Hong-Wei,He, Wei-Ming. Increased rainfall and nitrogen alter colonization and extinction during postgrazing steppe succession[J]. JOURNAL OF VEGETATION SCIENCE,2019,30(1):75-85.
APA	Yu, Hong-Wei,&He, Wei-Ming.(2019).Increased rainfall and nitrogen alter colonization and extinction during postgrazing steppe succession.JOURNAL OF VEGETATION SCIENCE,30(1),75-85.
MLA	Yu, Hong-Wei,et al."Increased rainfall and nitrogen alter colonization and extinction during postgrazing steppe succession".JOURNAL OF VEGETATION SCIENCE 30.1(2019):75-85.

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