Effects of nitrogen addition and mowing on nitrogen- and water-use efficiency of Artemisia frigida in a grassland restored from an abandoned cropland

doi:10.1093/jpe/rtab006

	Effects of nitrogen addition and mowing on nitrogen- and water-use efficiency of Artemisia frigida in a grassland restored from an abandoned cropland
	Diao, Huajie 1,2; Kardol, Paul 3; Dong, Kuanhu 2; Wang, Changhui 1,2
	2021
发表期刊	JOURNAL OF PLANT ECOLOGY
ISSN	1752-9921
卷号	14 期号:3 页码:515-526
摘要	Aims Competition among plants in a community usually depends on their nitrogen (N)-use efficiency (NUE) and water-use efficiency (WUE) in arid and semi-arid regions. Artemisia frigida is an indicator species in heavily degraded grassland, however, how its NUE and WUE respond to N addition in different successional stages is still unclear, especially with mowing, a common management practice in semi-arid grasslands. Methods Based on a long-term controlled experiment with N addition and mowing in an abandoned cropland from 2006 to 2013, we investigated the NUE and WUE of A. frigida in two patches (i.e. grass and herb patches) in 2013 which represented two potential successional stages from herb to grass communities. The coverage of A. frigida was higher (about 50%) in the herb patch than in the grass patch (about 10%). Stable isotopic C (delta C-13) and N (delta N-15) as well as C and N pools were measured in plants and soils. NUE was calculated as leaf C/N, and leaf delta C-13 values were used as a proxy for WUE. Important Findings N addition did not affect WUE of A. frigida, but significantly decreased NUE by 42.9% and 26.6% in grass and herb patches, respectively. The response of NUE to N addition was related to altering utilization of different N sources (NH4+ vs. NO3-) by A. frigida according to the changed relationship between leaf delta N-15/soil delta N-15 and NUE. Mowing had no effect on NUE regardless of N addition, but significantly increased WUE by 2.3% for A. frigida without N addition in the grass patch. The addition of N reduced the positive effect of mowing on its WUE in grass patch. Our results suggested that decreased NUE and/or WUE of A. frigida under mowing and N addition could reduce its competition, and further accelerate restoration succession from the abandoned cropland to natural grassland in the semi-arid region.
关键词	mowing nitrogen addition nitrogen-use efficiency semi-arid grassland water-use efficiency
学科领域	Plant Sciences ; Ecology ; Forestry
DOI	10.1093/jpe/rtab006
收录类别	SCI
语种	英语
WOS关键词	CARBON-ISOTOPE COMPOSITION ; N-15 NATURAL-ABUNDANCE ; PLANT NITROGEN ; SEMIARID GRASSLAND ; LEAF CARBON ; SOIL ; RESPONSES ; PATTERNS ; STOICHIOMETRY ; DELTA-N-15
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000648966700013
出版者	OXFORD UNIV PRESS
文献子类	Article
出版地	OXFORD
EISSN	1752-993X
资助机构	National Natural Science Foundation of China [31770526, 31872406] ; Chinese National Key Development Program for Basic Research [2016YFC0500703]
作者邮箱	dongkuanhu@126.com ; wangch@ibcas.ac.cn
作品OA属性	hybrid, Green Published
引用统计	被引频次：9[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/2S10CLM1/26462
专题	植被与环境变化国家重点实验室
作者单位	1.Shanxi Agr Univ, Coll Grassland Sci, Taigu 030801, Peoples R China 2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 3.Shanxi Agr Univ, Youyu Loess Plateau Grassland Ecosyst Res Stn, Taigu 030801, Peoples R China 4.Swedish Univ Agr Sci, Dept Forest Ecol & Management, S-90183 Umea, Sweden
推荐引用方式 GB/T 7714	Diao, Huajie,Kardol, Paul,Dong, Kuanhu,et al. Effects of nitrogen addition and mowing on nitrogen- and water-use efficiency of Artemisia frigida in a grassland restored from an abandoned cropland[J]. JOURNAL OF PLANT ECOLOGY,2021,14(3):515-526.
APA	Diao, Huajie,Kardol, Paul,Dong, Kuanhu,&Wang, Changhui.(2021).Effects of nitrogen addition and mowing on nitrogen- and water-use efficiency of Artemisia frigida in a grassland restored from an abandoned cropland.JOURNAL OF PLANT ECOLOGY,14(3),515-526.
MLA	Diao, Huajie,et al."Effects of nitrogen addition and mowing on nitrogen- and water-use efficiency of Artemisia frigida in a grassland restored from an abandoned cropland".JOURNAL OF PLANT ECOLOGY 14.3(2021):515-526.

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