DOI: 10.1016/j.atmosenv.2014.11.067
Scopus记录号: 2-s2.0-84917690635
论文题名: Greenhouse gas emissions from naturally ventilated freestall dairy barns
作者: Joo H ; S ; , Ndegwa P ; M ; , Heber A ; J ; , Ni J ; -Q ; , Bogan B ; W ; , Ramirez-Dorronsoro J ; C ; , Cortus E
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 102 起始页码: 384
结束页码: 392
语种: 英语
英文关键词: Enhanced concentrations
; Environmental factors
; Freestall barns
; Greenhouse gases
Scopus关键词: Air
; Dairies
; Farm buildings
; Gas emissions
; Greenhouse gases
; Nitrogen oxides
; Ventilation
; Background concentration
; Environmental conditions
; Environmental factors
; Freestall barn
; Gas-sampling systems
; Nitrous oxide emissions
; Temperature humidity index
; Ultrasonic anemometer
; Carbon dioxide
; carbon dioxide
; methane
; nitrous oxide
; air sampling
; atmospheric pollution
; cattle
; environmental factor
; greenhouse gas
; methane
; nitrous oxide
; spatiotemporal analysis
; air conditioning
; air sampling
; air temperature
; anemometry
; Article
; carbon footprint
; dairy industry
; environmental parameters
; environmental temperature
; gas
; Holstein cattle
; humidity
; infrared radiation
; limit of detection
; lung ventilation
; nitrous oxide emission
; nonhuman
; seasonal variation
; solar radiation
; weather
; wind
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: Greenhouse gas (GHG) emissions from two naturally-ventilated dairy freestall barns measured for a total of 21d, one week each in May, July, and September 2009, are presented in this article. The holding capacity of Barn 1 (B1) was 400 Holstein cows, while that for Barn 2 (B2) was 850 cows. Air samples were taken from inlets and outlets of the barns via a custom made multiplexer gas sampling system for measurement of gas concentrations using a photoacoustic infrared multigas analyzer. Barn ventilation rates were based on air velocity measured with arrays of 3-D ultrasonic anemometers at inlets and outlets. Gas concentrations (10min means) in the barns ranged from: 443-789ppm for CO2, 0.0-39.4ppm for CH4, and 0.25-0.39ppm for N2O; with mean concentrations ranging from 6 to 20%, 0 to 4%, and 26 to 180% above the average background concentrations for CO2, N2O, and CH4, respectively. The correlations between CO2 and CH4 enhanced concentrations were relatively stronger (R of 0.67-0.74) than between CO2 and N2O enhanced concentrations (R of 0.10-0.20). Environmental conditions did not significantly (p=0.46) impact the enhanced concentrations of N2O in the barns. All three parameters (T, RH, and v) had significant (p<0.01) influences on CO2 enhanced concentrations; while only T (p<0.01) and v (p<0.01) had significant influences on CH4 enhanced concentrations. Enhanced concentrations of CO2 and CH4 correlated negatively with all three parameters. The influence of the temperature-humidity index (THI) on CO2 enhanced concentrations was higher than that of v; while the effect v had on CH4 enhanced concentrations was slightly higher than that of the temperature-humidity index. The average emissions, based on hourly means, ranged from 5.3 to 10.7kgd-1AU-1 for CO2; 0.3 to 2.5gd-1AU-1 for N2O; and between 67 and 252gd-1AU-1 for CH4. Nitrous oxide emissions from the smaller barn, B1 (0.4-2.5gd-1AU-1), were significantly higher than from the larger barn, B2 (0.3-0.5gd-1AU-1) most probably because 50% of B1 was open (no stalls) loose dirt floor. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82034
Appears in Collections: 气候变化事实与影响
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作者单位: Biological Systems Engineering, Washington State University, PO Box 646120, Pullman, WA, United States; Agricultural and Biological Engineering, Purdue University, 225 South University Street, West LafayetteIN, United States; Natural Resources and Environmental Management, Ball State University, 2000 W. University Ave., Muncie, IN, United States; Agricultural and Biosystems Engineering, South Dakota State University, Brookings, SD, United States
Recommended Citation:
Joo H,S,, Ndegwa P,et al. Greenhouse gas emissions from naturally ventilated freestall dairy barns[J]. Atmospheric Environment,2015-01-01,102