globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gcb.12611
论文题名:
Rapid plant species loss at high rates and at low frequency of N addition in temperate steppe
作者: Zhang Y.; Lü X.; Isbell F.; Stevens C.; Han X.; He N.; Zhang G.; Yu Q.; Huang J.; Han X.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2014
卷: 20, 期:11
起始页码: 3520
结束页码: 3529
语种: 英语
英文关键词: Acidification ; Ammonium toxicity ; Biodiversity ; Inner Mongolia ; N addition frequency ; Peak effect ; Pulse effect ; Temperate grassland
Scopus关键词: fertilizer ; nitrogen ; biodiversity ; China ; dose response ; drug effects ; grassland ; physiology ; Viridiplantae ; Biodiversity ; China ; Dose-Response Relationship, Drug ; Fertilizers ; Grassland ; Nitrogen ; Viridiplantae
英文摘要: Humans are both intentionally (fertilization) and unintentionally (atmospheric nutrient deposition) adding nutrients worldwide. Increasing availability of biologically reactive nitrogen (N) is one of the major drivers of plant species loss. It remains unclear, however, whether plant diversity will be equally reduced by inputs of reactive N coming from either small and frequent N deposition events or large and infrequent N fertilization events. By independently manipulating the rate and frequency of reactive N inputs, our study teases apart these potentially contrasting effects. Plant species richness decreased more quickly at high rates and at low frequency of N addition, which suggests that previous fertilization studies have likely over-estimated the effects of N deposition on plant species loss. N-induced species loss resulted from both acidification and ammonium toxicity. Further study of small and frequent N additions will be necessary to project future rates of plant species loss under increasing aerial N deposition. © 2014 John Wiley & Sons Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62186
Appears in Collections:影响、适应和脆弱性

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作者单位: State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing, China; State Key Laboratory of Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China; University of Chinese Academy of Sciences, Yuquan Road, Beijing, China; Department of Plant Biology, University of Georgia, Athens, GA, United States; Lancaster Environment Centre, Lancaster University, Lancaster, United Kingdom; Synthesis Research Center of Chinese Ecosystem Research Network, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China; Department of Biology, Graduate Degree Program in Ecology, Colorado State University, Fort Collins, CO, United States

Recommended Citation:
Zhang Y.,Lü X.,Isbell F.,et al. Rapid plant species loss at high rates and at low frequency of N addition in temperate steppe[J]. Global Change Biology,2014-01-01,20(11)
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