DOI: 10.1016/j.atmosenv.2014.10.051
Scopus记录号: 2-s2.0-84909992163
论文题名: Effects of straw return on C2-C5 non-methane hydrocarbon (NMHC) emissions from agricultural soils
作者: Wang R ; , Wu T ; , Dai W ; , Liu H ; , Zhao J ; , Wang X ; , Huang F ; , Wang Z ; , Shi C
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 100 起始页码: 210
结束页码: 217
语种: 英语
英文关键词: Agricultural soils
; C2-C5 non-methane hydrocarbons (NMHCs)
; Crop straw return
; Emission fluxes
Scopus关键词: Budget control
; Crops
; Ethylene
; Floods
; Methane
; Microorganisms
; Agricultural soils
; Control treatments
; Crop straws
; Emission fluxes
; Emissions rates
; Flooded conditions
; Non-flooded conditions
; Non-methane hydrocarbons
; Soils
; 1 butene
; 1 pentene
; alkene
; butane
; ethane
; ethylene
; hydrocarbon
; i butane
; isoprene
; non methane hydrocarbon
; pentane
; propane
; propylene
; unclassified drug
; agricultural soil
; carbon flux
; emission inventory
; nonmethane hydrocarbon
; soil amendment
; soil emission
; straw
; agricultural land
; Article
; concentration (parameters)
; controlled study
; flooding
; soil
; soil amendment
; soil microflora
; straw
; water content
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: The effect of crop straw return on C2-C5 non-methane hydrocarbon (NMHC) emissions from agricultural soils is investigated using a laboratory-controlled incubation of agricultural soils amended with crop straw for a period of 56 days. The average emission fluxes of total C2-C5 NMHCs from amended agricultural soils are 304 and 173ngkg-1h-1 under non-flooded and flooded conditions, respectively. Alkenes are the principal emitted C2-C5 NMHCs from amended agricultural soils, where a predominance of ethene, propene and 1-butene together shared 65% and 59% of the total C2-C5 NMHCs under non-flooded and flooded conditions, respectively. The emissions rates of the above top three alkenes and the total C2-C5 alkenes from amended agricultural soils under non-flooded conditions are one to four times those under flooded conditions, and these average values are 14-89 and 5-34 times those in their corresponding control treatments, respectively. These results imply that straw return contributes substantially to the emissions of light alkenes from agricultural soils, particularly under non-flooded conditions. The high correlation between microorganisms and C2-C5 NMHC fluxes from amended agricultural soils suggest that microbes play an important role in C2-C5 NMHC emissions from straw-amended agricultural soils. A rough estimate indicates that crop straw return could contribute insignificantly to global C2-C5 hydrocarbon budgets. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82133
Appears in Collections: 气候变化事实与影响
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作者单位: College of Environmental Sciences and Engineering, Anhui Normal University, Wuhu, China; State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, China; Huangshan Meteorological Administration Office, Huangshan, China
Recommended Citation:
Wang R,, Wu T,, Dai W,et al. Effects of straw return on C2-C5 non-methane hydrocarbon (NMHC) emissions from agricultural soils[J]. Atmospheric Environment,2015-01-01,100