Mowing mitigates the negative impacts of N addition on plant species diversity

doi:10.1007/s00442-019-04353-9

	Mowing mitigates the negative impacts of N addition on plant species diversity
	Liu, Zhuo-Yi 3,4; Yang, Guo-Jiao 3,4; Lu, Xiao-Tao 3; Stevens, Carly J.5; Zhang, Guang-Ming 2; Wang, Hong-Yi 1,3; Han, Xing-Guo 2,3,4; Wang, Zheng-Wen 3; Zhang, Zi-Jia 3
刊名	OECOLOGIA
	2019-03-01
卷号	189 期号:3 页码:769-779
关键词	Biodiversity loss Nitrogen compounds Hay-making Community evenness Semi-arid grassland
ISSN号	0029-8549
DOI	10.1007/s00442-019-04353-9
英文摘要	Increasing availability of reactive nitrogen (N) threatens plant diversity in diverse ecosystems. While there is mounting evidence for the negative impacts of N deposition on one component of diversity, species richness, we know little about its effects on another one, species evenness. It is suspected that ecosystem management practice that removes nitrogen from the ecosystem, such as hay-harvesting by mowing in grasslands, would mitigate the negative impacts of N deposition on plant diversity. However, empirical evidence is scarce. Here, we reported the main and interactive effects of N deposition and mowing on plant diversity in a temperate meadow steppe with 4-year data from a field experiment within which multi-level N addition rates and multiple N compounds are considered. Across all the types of N compounds, species richness and evenness significantly decreased with the increases of N addition rate, which was mainly caused by the growth of a tall rhizomatous grass, Leymus chinensis. Such negative impacts of N addition were accumulating with time. Mowing significantly reduced the dominance of L. chinensis, and mitigated the negative impacts of N deposition on species evenness. We present robust evidence that N deposition threatened biodiversity by reducing both species richness and evenness, a process which could be alleviated by mowing. Our results highlight the changes of species evenness in driving the negative impacts of N deposition on plant diversity and the role of mowing in mediating such negative impacts of N deposition.
资助项目	National Natural Science Foundation of China[31430016] ; National Natural Science Foundation of China[31822006] ; National Natural Science Foundation of China[31770503] ; National Basic Research Program of China[2016YFC0500601] ; National Basic Research Program of China[2015CB150802] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB15010403] ; Youth Innovation Promotion Association CAS[2014174] ; CAS[QYZDB-SSW-DQC006]
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000461360700018
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/123941]
专题	中国科学院沈阳应用生态研究所
通讯作者	Lu, Xiao-Tao
作者单位	1.Heilongjiang Bayi Agr Univ, Daqing 163319, Peoples R China 2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat Environm Change, Beijing 100093, Peoples R China 3.Chinese Acad Sci, Inst Appl Ecol, CAS Key Lab Forest Ecol & Management, Erguna Forest Steppe Ecotone Res Stn, Shenyang 110016, Liaoning, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Univ Lancaster, Lancaster Environm Ctr, Lancaster LA1 4YQ, England
推荐引用方式 GB/T 7714	Liu, Zhuo-Yi,Yang, Guo-Jiao,Lu, Xiao-Tao,et al. Mowing mitigates the negative impacts of N addition on plant species diversity[J]. OECOLOGIA,2019,189(3):769-779.
APA	Liu, Zhuo-Yi.,Yang, Guo-Jiao.,Lu, Xiao-Tao.,Stevens, Carly J..,Zhang, Guang-Ming.,...&Zhang, Zi-Jia.(2019).Mowing mitigates the negative impacts of N addition on plant species diversity.OECOLOGIA,189(3),769-779.
MLA	Liu, Zhuo-Yi,et al."Mowing mitigates the negative impacts of N addition on plant species diversity".OECOLOGIA 189.3(2019):769-779.