DOI: 10.1016/j.atmosenv.2014.10.048
Scopus记录号: 2-s2.0-84911061620
论文题名: Short-term emissions of CO2 and N2O in response to periodic flood irrigation with waste water in the Mezquital Valley of Mexico
作者: González-Méndez B ; , Webster R ; , Fiedler S ; , Loza-Reyes E ; , Hernández J ; M ; , Ruíz-Suárez L ; G ; , Siebe C
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 101 起始页码: 116
结束页码: 124
语种: 英语
英文关键词: Carbon dioxide
; Mexico
; Nitrous oxide
; REML
; Sewage effluent
; Static chambers
Scopus关键词: Carbon
; Carbon dioxide
; Ecosystems
; Floods
; Gas emissions
; Irrigation
; Maximum likelihood
; Nitrogen
; Nitrogen compounds
; Nitrogen oxides
; Rain
; Redox reactions
; Sewage
; Me-xico
; Nitrous oxide
; REML
; Sewage effluents
; Static chambers
; Effluents
; carbon
; carbon dioxide
; nitrogen
; nitrous oxide
; rain
; agricultural emission
; alfalfa
; carbon dioxide
; flooding
; grass
; irrigation system
; maize
; nitrous oxide
; waste management
; wastewater
; alfalfa
; Article
; atmosphere
; carbon footprint
; carbon mineralization
; carbon source
; city
; controlled study
; flood irrigation
; flooding
; grass
; irrigation (agriculture)
; maize
; maximum likelihood method
; Mexico
; nitrogen mineralization
; nitrous oxide emission
; nonhuman
; oxidation reduction potential
; rye
; rye grass
; soil
; waste water management
; Durango [Mexico]
; Mexico [North America]
; Mezquital Valley
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: Irrigation with waste water adds labile carbon and nitrogen compounds to the soil, and when applied by flooding it rapidly changes the soil's atmosphere and redox potential. In the Mezquital Valley more than 90000ha is irrigated with waste water from Mexico City, and enhanced emissions of CO2 and N2O follow each flooding. We measured the emissions of these two gases from a field irrigated periodically with waste water and under three crops, namely alfalfa, rye-grass and maize, using static chambers for 21 months. We also measured emissions from a field growing rain-fed maize before and shortly after two rain events. The data from repeated measurements from the same chambers are correlated in time, and so we modelled the ante-dependence and fitted the models by residual maximum likelihood (REML). The emissions of both CO2 and N2O increased rapidly in response to flood irrigation with peaks up to 448mgCm-2hour-1 for CO2 and 2.98mgNm-2hour-1 for N2O under maize. Emissions peaked in particular irrigation events either as the infiltrating water replaced the gas from air-filled pores or several days after irrigation as excess nitrogen and fresh sources of carbon were mineralized. Processes operating during the few days during and immediately after irrigation seem to determine the dynamics of gaseous production in this agricultural ecosystem. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82084
Appears in Collections: 气候变化事实与影响
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作者单位: Instituto de Geología, Universidad Nacional Autónoma de México, Ciudad Universitaria, Coyoacán, México D.F., Mexico; Rothamsted Research, Harpenden, Hertfordshire, United Kingdom; Johannes Gutenberg-University Mainz, Institute for Geography, Johann-Joachim-Becher-Weg 21, Mainz, Germany; Centro de Ciencias de la Atmósfera, Universidad Nacional Autónoma de México, Ciudad Universitaria, Coyoacán, México D.F., Mexico
Recommended Citation:
González-Méndez B,, Webster R,, Fiedler S,et al. Short-term emissions of CO2 and N2O in response to periodic flood irrigation with waste water in the Mezquital Valley of Mexico[J]. Atmospheric Environment,2015-01-01,101