A novel soil manganese mechanism drives plant species loss with increased nitrogen deposition in a temperate steppe

doi:10.1890/15-0917.1

CORC > 植物研究所 > 中国科学院植物研究所 > 植被与环境变化国家重点实验室

	A novel soil manganese mechanism drives plant species loss with increased nitrogen deposition in a temperate steppe
	Tian, Qiuying ; Liu, Nana 13; Bai, Wenming ; Li, Linghao ; Chen, Jiquan 11,12; Reich, Peter B.; Yu, Qiang 6; Guo, Dali 9; Smith, Melinda D.; Knapp, Alan K.
刊名	ECOLOGY
	2016
卷号	97 期号:1
关键词	Artemisia frigida forbs and grasses Inner Mongolia China manganese mobilization and acquisition nitrogen deposition photosynthesis soil acidification species richness Stipa krylovii temperate steppe
ISSN号	0012-9658
DOI	10.1890/15-0917.1
文献子类	Article
英文摘要	Loss of plant diversity with increased anthropogenic nitrogen (N) deposition in grasslands has occurred globally. In most cases, competitive exclusion driven by preemption of light or space is invoked as a key mechanism. Here, we provide evidence from a 9-yr N-addition experiment for an alternative mechanism: differential sensitivity of forbs and grasses to increased soil manganese (Mn) levels. In Inner Mongolia steppes, increasing the N supply shifted plant community composition from grass-forb codominance (primarily Stipa krylovii and Artemisia frigida, respectively) to exclusive dominance by grass, with associated declines in overall species richness. Reduced abundance of forbs was linked to soil acidification that increased mobilization of soil Mn, with a 10-fold greater accumulation of Mn in forbs than in grasses. The enhanced accumulation of Mn in forbs was correlated with reduced photosynthetic rates and growth, and is consistent with the loss of forb species. Differential accumulation of Mn between forbs and grasses can be linked to fundamental differences between dicots and monocots in the biochemical pathways regulating metal transport. These findings provide a mechanistic explanation for N-induced species loss in temperate grasslands by linking metal mobilization in soil to differential metal acquisition and impacts on key functional groups in these ecosystems.
学科主题	Ecology
电子版国际标准刊号	1939-9170
出版地	HOBOKEN
WOS关键词	NUTRIENT ENRICHMENT ; ACIDIC GRASSLANDS ; BIODIVERSITY LOSS ; REGIONAL TRENDS ; DIVERSITY ; FERTILIZATION ; LIGHT ; ACIDIFICATION ; COMPETITION ; THRESHOLDS
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
语种	英语
出版者	WILEY
WOS记录号	WOS:000369852600009
资助机构	Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31130008, 31272234, 31430016, 41320104002] ; National Basic Research Program of ChinaNational Basic Research Program of China [2010CB833502]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/24573]
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 2.Chinese Acad Agr Sci, Natl Soil Fertil & Fertilizer Effects Long Term M, Beijing 100081, Peoples R China 3.Univ Calif Santa Cruz, Environm Studies, Santa Cruz, CA 95064 USA 4.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Synth Res Ctr, Chinese Ecosyst Res Network,Inst Geog Sci & Nat R, Beijing 100101, Peoples R China 5.Reich, Peter B.] Univ Minnesota, Dept Forest Resources, St Paul, MN 55108 USA 6.Reich, Peter B.] Univ Western Sydney, Hawkesbury Inst Environm, Penrith, NSW 2753, Australia 7.Chinese Acad Sci, State Key Lab Forest & Soil Ecol, Inst Appl Ecol, Shenyang 110164, Peoples R China 8.Yu, Qiang; Smith, Melinda D.; Knapp, Alan K.] Colorado State Univ, Dept Biol, Ft Collins, CO 80523 USA 9.Yu, Qiang; Smith, Melinda D.] Chinese Acad Sci, Grad Degree Program Ecol, Beijing 100101, Peoples R China 10.Michigan State Univ, CGCEO Geog, E Lansing, MI 48823 USA
推荐引用方式 GB/T 7714	Tian, Qiuying,Liu, Nana,Bai, Wenming,et al. A novel soil manganese mechanism drives plant species loss with increased nitrogen deposition in a temperate steppe[J]. ECOLOGY,2016,97(1).
APA	Tian, Qiuying.,Liu, Nana.,Bai, Wenming.,Li, Linghao.,Chen, Jiquan.,...&Zhang, Wen-Hao.(2016).A novel soil manganese mechanism drives plant species loss with increased nitrogen deposition in a temperate steppe.ECOLOGY,97(1).
MLA	Tian, Qiuying,et al."A novel soil manganese mechanism drives plant species loss with increased nitrogen deposition in a temperate steppe".ECOLOGY 97.1(2016).