DOI: 10.1016/j.envpol.2019.113556
论文题名: Effects of warming and elevated O3 concentrations on N2O emission and soil nitrification and denitrification rates in a wheat-soybean rotation cropland
作者: Wang Y. ; Hu Z. ; Shang D. ; Xue Y. ; Islam A.R.M.T. ; Chen S.
刊名: Environmental Pollution
ISSN: 2697491
出版年: 2020
卷: 257 语种: 英语
英文关键词: Agro-ecosystem
; Global climate change
; N2O flux
; Nitrogen cycle
; Ozone
Scopus关键词: Crops
; Denitrification
; Farms
; Global warming
; Nitrification
; Nitrogen oxides
; Ozone
; Soils
; Agro ecosystems
; Denitrification rate
; Elevated temperature
; Global climate changes
; Nitrate reductase activities
; Nitrification and denitrification
; Nitrification rates
; Nitrogen cycles
; Soil pollution
; nitrate reductase
; nitrous oxide
; ozone
; agricultural ecosystem
; concentration (composition)
; crop rotation
; denitrification
; global warming
; nitrification
; nitrogen cycle
; nitrous oxide
; ozone
; soybean
; wheat
; agricultural land
; Article
; climate change
; concentration (parameter)
; cropland
; denitrification
; environmental temperature
; enzyme activity
; growing season
; nitrification
; nonhuman
; plant leaf
; seasonal variation
; soil denitrification
; soil nitrification
; soybean
; warming
; wheat
; Glycine max
; Triticum aestivum
英文摘要: The effects of warming and elevated ozone (O3) concentrations on nitrous oxide (N2O) emission from cropland has received increasing attention; however, the small number of studies on this topic impedes understanding. A field experiment was performed to explore the role of warming and elevated O3 concentrations on N2O emission from wheat-soybean rotation cropland from 2012 to 2013 using open-top chambers (OTCs). Experimental treatments included ambient temperature (control), elevated temperature (+2 °C), elevated O3 (100 ppb), and combined elevated temperature (+2 °C) and O3 (100 ppb). Results demonstrate that warming significantly increased the accumulative amount of N2O (AAN) emitted from the soil-winter wheat system due to enhanced nitrification rates in the wheat farmland and nitrate reductase activity in wheat leaves. However, elevated O3 concentrations significantly decreased AAN emission from the soil-soybean system owing to reduced nitrification rates in the soybean farmland. The combined treatment of warming and elevated O3 inhibited the emission of N2O from the soybean farmland. Additionally, both the warming and combined treatments significantly increased soil nitrification rates in winter wheat and soybean croplands and decreased denitrification rates in the winter wheat cropping system. Our results suggest that global warming and elevated O3 concentrations will strongly affect N2O emission from wheat-soybean rotation croplands. Warming increased N2O emission from wheat-soybean rotational cropland, whereas elevated O3 decreased N2O emission. © 2019 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/159529
Appears in Collections: 气候变化与战略
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作者单位: Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing, 210044, China; Department of Disaster Management, Disaster Management E-Learning Centre, Begum Rokeya University, Rangpur, 5400, Bangladesh
Recommended Citation:
Wang Y.,Hu Z.,Shang D.,et al. Effects of warming and elevated O3 concentrations on N2O emission and soil nitrification and denitrification rates in a wheat-soybean rotation cropland[J]. Environmental Pollution,2020-01-01,257