DOI: 10.1016/j.atmosenv.2014.06.001
Scopus记录号: 2-s2.0-84902346922
论文题名: Ozone and nitrogen effects on yield and nutritive quality of the annual legume Trifolium cherleri
作者: Sanz J ; , González-Fernández I ; , Calvete-Sogo H ; , Lin J ; S ; , Alonso R ; , Muntifering R ; , Bermejo V
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 94 起始页码: 765
结束页码: 772
语种: 英语
英文关键词: Annual grasslands
; Dehesa
; Forage quality
; Ozone fluxes
; POD
; Senescence
Scopus关键词: Biomass
; Charcoal
; Deposition
; Experiments
; Nitrogen
; Ozone
; Annual grassland
; Dehesa
; Forage quality
; Ozone flux
; POD
; Senescence
; Ecology
; nitrogen
; ozone
; aboveground biomass
; atmospheric deposition
; atmospheric pollution
; crop yield
; dose-response relationship
; environmental stress
; global change
; grassland
; legume
; nitrogen
; ozone
; pollution effect
; senescence
; article
; biodiversity
; biomass
; biomass production
; cell wall
; clover
; controlled study
; environmental stress
; experimental study
; fertilization
; food quality
; fumigation
; global change
; meteorology
; nodulation
; nonhuman
; pasture
; plant cell
; plant growth
; pollutant
; priority journal
; stomatal conductance
; Trifolium cherleri
; Iberian Peninsula
; Mediterranean Region
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: Two independent experiments were performed in an Open-Top Chamber facility to determine the response of biomass and nutritive quality of the annual legume Trifolium cherleri to increased levels of ozone (O3) and nitrogen (N) deposition, two main drivers of global change. Plants growing in pots were exposed to three O3 treatments: charcoal-filtered air (CFA); non-filtered air, reproducing ambient O3 levels of the site (NFA); and non-filtered air supplemented with 40nll-1 (NFA+). Nitrogen was added in biweekly doses to achieve final doses of 5 (N5), 15 (N15) and 30kgha-1 (N30), reproducing the N deposition range in the Iberian Peninsula. Ozone negatively affected all the growth-related parameters and increased plant senescent biomass. The pollutant affected subterranean biomass to a greater extent than aerial biomass, resulting in altered aerial/subterranean ratio. Effects in the second experiment followed the same pattern as in the first, but were of lesser magnitude. However, these differences between assays could not be explained adequately by the absorbed O3 fluxes (Phytotoxic Ozone Dose, POD). Concentrations of cell-wall constituents related to nutritive quality increased with the O3 exposure, reducing the Relative Food Value index (RFV) that indicates decreased nutritive quality of the forage.Nitrogen stimulated all growth-related parameters, but increased the aboveground biomass more than the subterranean biomass. No effects of N fertilizer were detected for the nutritive quality parameters. A significant interaction between O3 and N was found in the second experiment. N further enhanced the increase of senescent biomass caused by O3.Results indicate that O3 is a potentially significant environmental stress factor in terms of structure and diversity of Mediterranean pastures. © 2014. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/80901
Appears in Collections: 气候变化事实与影响
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作者单位: Ecotoxicology of Air Pollution, CIEMAT, Avda. Complutense 40, 28040 Madrid, Spain; Department of Animal Sciences, Auburn University, Auburn, AL 36849, United States
Recommended Citation:
Sanz J,, González-Fernández I,, Calvete-Sogo H,et al. Ozone and nitrogen effects on yield and nutritive quality of the annual legume Trifolium cherleri[J]. Atmospheric Environment,2014-01-01,94