DOI: 10.1016/j.atmosenv.2017.12.022
Scopus记录号: 2-s2.0-85039457017
论文题名: Spatial variations in soil and plant nitrogen levels caused by ammonia deposition near a cattle feedlot
作者: Shen J ; , Chen D ; , Bai M ; , Sun J ; , Lam S ; K ; , Mosier A ; , Liu X ; , Li Y
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2018
卷: 176 起始页码: 120
结束页码: 127
语种: 英语
英文关键词: Leaf nitrogen
; Nitrogen deposition
; Soil nitrogen
; Stable isotope 15N
Scopus关键词: Ammonia
; Deposition rates
; Nitrogen
; Plants (botany)
; Soils
; Ammonia deposition
; Leaf nitrogen
; Nitrogen deposition
; Soil mineral nitrogen
; Soil nitrogen
; Spatial variations
; Stable isotopes
; Victoria , Australia
; Forestry
; ammonia
; nitrogen
; nitrogen 15
; ammonia
; grass
; grassland
; herb
; livestock farming
; mineralogy
; nitrogen
; nitrogen isotope
; soil nitrogen
; spatial variation
; stable isotope
; air pollution indicator
; animal food
; Article
; atmospheric deposition
; Australia
; bovine
; Cymbonotus lawsonianus
; feedlot
; grass
; grassland
; Microlaena stipoides
; nitrogen deposition
; plant
; plant leaf
; priority journal
; soil
; soil analysis
; species
; Australia
; Victoria [Australia]
; Bos
; Cymbonotus lawsonianus
; Microlaena stipoides
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: Cattle feedlots are significant ammonia (NH3) emission sources, and cause high NH3 deposition. This study was conducted to investigate the responses of soil mineral nitrogen (N), percent cover of plant species, leaf N content, and leaf δ15N to NH3 deposition around a 17,500-head cattle feedlot in Victoria, Australia. Soil samples were collected in May 2015 at 100-m intervals along eight downwind transects, and plant samples were collected in June 2015 from five sites at 50- to 300-m intervals along a grassland transect within 1 km downwind of the feedlot. NH3 deposition was also monitored at five sites within 1 km downwind of the feedlot. The estimated NH3-N deposition rates ranged from 2.9 kg N ha−1 yr−1 at 1 km from the feedlot to 203 kg N ha−1 yr−1 at 100 m from the feedlot. The soil mineral N content was high (22–98 mg kg−1, mainly nitrate), significantly decreased with increasing distance from the feedlot, and significantly increased with increasing NH3-N deposition. With increasing NH3-N deposition, the percent cover of the herb species Cymbonotus lawsonianus increased significantly, but that of the grass species Microlaena stipoides decreased significantly. The leaf total N contents of the grass and herb species were high (>4%), and were linearly, positively correlated with the NH3-N deposition rate. Leaf δ15N values were linearly, negatively correlated with the N deposition rate. These results indicate that the leaf N contents and δ15N values of C. lawsonianus and M. stipoides may be bioindicators of N deposition. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/83019
Appears in Collections: 气候变化事实与影响
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作者单位: Key Laboratory of Agro-Ecological Processes in Subtropical Regions, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China; School of Agriculture and Food, Faculty of Veterinary and Agricultural Sciences, The University of MelbourneVictoria, Australia
Recommended Citation:
Shen J,, Chen D,, Bai M,et al. Spatial variations in soil and plant nitrogen levels caused by ammonia deposition near a cattle feedlot[J]. Atmospheric Environment,2018-01-01,176