Community-level trait responses and intra-specific trait variability play important roles in driving community productivity in an alpine meadow on the Tibetan Plateau

doi:10.1093/jpe/rtw069

ISWC OpenIR > 水保所科研产出--SCI > 2017--SCI

	Community-level trait responses and intra-specific trait variability play important roles in driving community productivity in an alpine meadow on the Tibetan Plateau
	Li, Wei 1; Zhao, Jie 1; Epstein, Howard E.1; Jing, Guanghua 1; Cheng, Jimin 1; Du, Guozhen 1; Li, W (reprint author), Chinese Acad Sci, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, 26 Xinong Rd, Yangling 712100, Shaanxi, Peoples R China.
文章类型	Article
	2017
发表期刊	JOURNAL OF PLANT ECOLOGY
ISSN	1752-9921
通讯作者邮箱	liwei2013@nwsuaf.edu.cn
卷号	10 期号:4 页码:592-600
摘要	Aims Human activities have dramatically increased nutrient inputs to ecosystems, impacting plant community diversity, composition and functioning. Extensive research has shown that a decrease in species diversity and an increase in productivity are a common phenomenon following fertilization in grasslands ecosystem. The magnitude of the response of species diversity and above-ground net primary productivity (ANPP) to fertilization mainly depends on species traits (mean trait values) and traits variability (plasticity). Our aim of this study was to examine (i) changes of species diversity (species richness and Shannon-Wiener index) and ANPP following fertilization; (ii) which species traits or community-weighted mean (CWM) traits can determine ANPP, as expected from the 'biomass ratio hypothesis'; and (iii) the relative role of intra-specific and inter-specific trait variability in this process following fertilization. Methods We measured ANPP and four key plant functional traits: specific leaf area (SLA), leaf dry matter content (LDMC), mature plant height (MPH) and leaf nitrogen concentration (LNC) for 25 component species along a fertilization gradient in an alpine meadow on the Tibetan Plateau. In addition, trait variation of species was assessed using coefficients of variation (CV), and we calculated the ratio of the CVintra to the CVinter. Important Findings Our results showed that: (i) fertilization significantly reduced species richness and Shannon-Weiner diversity index, but significantly increased ANPP; (ii) there was a significant positive correlation between ANPP and CWM-SLA and CWM-MPH, yet there was no significant relationship between ANPP and CWM-LNC or CWM-LDMC; (iii) intra-specific variability in SLA and MPH was found to be much greater than inter-specific variability, especially at the higher fertilization levels. We concluded that CWM-SLA and CWM-MPH can be used to assess the impacts of species changes on ecosystem functioning, and dominant species can maximize resource use through intra-specific variability in SLA and MPH to compensate for the loss of species following fertilization, therefore maintaining high community productivity.
关键词	Biomass Ratio Hypothesis Fertilization Leaf Dry Matter Content Leaf Nitrogen Concentration Mature Plant Height Specific Leaf Area Tibetan Plateau
学科领域	Plant Sciences ; Environmental Sciences & Ecology
DOI	10.1093/jpe/rtw069
收录类别	SCI
出版地	OXFORD
语种	英语
WOS记录号	WOS:000417976800002
出版者	OXFORD UNIV PRESS
项目资助者	Natural Science Foundation of China [41230852]; Chinese Academy of Sciences [KJZD-EW-TZ-G10]; Northwest A F University [Z109021107, Z109021307, QN2013070]; West Light Foundation of Chinese Academy of Sciences [K318021305]; Natural Science Foundation of Shaanxi Province [2016JQ3008]; China Scholarship Council ; Natural Science Foundation of China [41230852]; Chinese Academy of Sciences [KJZD-EW-TZ-G10]; Northwest A F University [Z109021107, Z109021307, QN2013070]; West Light Foundation of Chinese Academy of Sciences [K318021305]; Natural Science Foundation of Shaanxi Province [2016JQ3008]; China Scholarship Council
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	sbir.nwafu.edu.cn/handle/361005/7945
专题	水保所科研产出--SCI_2017--SCI
通讯作者	Li, W (reprint author), Chinese Acad Sci, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, 26 Xinong Rd, Yangling 712100, Shaanxi, Peoples R China.
作者单位	1.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, 26 Xinong Rd, Yangling 712100, Peoples R China 2.Chinese Acad Sci, Inst Soil & Water Conservat, 26 Xinong Rd, Yangling 712100, Peoples R China 3.Minist Water Resource, 26 Xinong Rd, Yangling 712100, Peoples R China 4.Northwest A&F Univ, Coll Anim Sci & Technol, 22 Xinong Rd, Yangling 712100, Peoples R China 5.Univ Virginia, Dept Environm Sci, 291 McCormick Rd, Charlottesville, VA 22904 USA 6.Lanzhou Univ, Sch Life Sci, 222 Tianshui Rd, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Li, Wei,Zhao, Jie,Epstein, Howard E.,et al. Community-level trait responses and intra-specific trait variability play important roles in driving community productivity in an alpine meadow on the Tibetan Plateau[J]. JOURNAL OF PLANT ECOLOGY,2017,10(4):592-600.
APA	Li, Wei.,Zhao, Jie.,Epstein, Howard E..,Jing, Guanghua.,Cheng, Jimin.,...&Li, W .(2017).Community-level trait responses and intra-specific trait variability play important roles in driving community productivity in an alpine meadow on the Tibetan Plateau.JOURNAL OF PLANT ECOLOGY,10(4),592-600.
MLA	Li, Wei,et al."Community-level trait responses and intra-specific trait variability play important roles in driving community productivity in an alpine meadow on the Tibetan Plateau".JOURNAL OF PLANT ECOLOGY 10.4(2017):592-600.