Spatial Variability of Methane, Nitrous Oxide, and Carbon Dioxide Emissions from Drained Grasslands

1998 ◽  
Vol 62 (3) ◽  
pp. 810-817 ◽  
Author(s):  
A. van den Pol-van Dasselaar ◽  
W. J. Corré ◽  
A. Priemé ◽  
Å. K. Klemedtsson ◽  
P. Weslien ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Nitrous Oxide ◽  
Spatial Variability ◽  
Carbon Dioxide Emissions

Nitrous oxide and carbon dioxide emissions from monoculture and rotational cropping of corn, soybean and winter wheat

2008 ◽  
Vol 88 (2) ◽  
pp. 163-174 ◽  
Author(s):  
C F Drury ◽  
X M Yang ◽  
W D Reynolds ◽  
N B McLaughlin
Keyword(s):  
Carbon Dioxide ◽  
Nitrous Oxide ◽  
Winter Wheat ◽  
Carbon Dioxide Emissions ◽  
Crop Residue ◽  
Agricultural Land ◽  
Application Rate ◽  
Climatic Conditions ◽  
Growing Seasons ◽  
Previous Crop

It is well established that nitrous oxide (N2O) and carbon dioxide (CO2) emissions from agricultural land are influenced by the type of crop grown, the form and amount of nitrogen (N) applied, and the soil and climatic conditions under which the crop is grown. Crop rotation adds another dimension that is often overlooked, however, as the crop residue being decomposed and supplying soluble carbon to soil biota is usually from a different crop than the crop that is currently growing. Hence, the objective of this study was to compare the influence of both the crop grown and the residues from the preceding crop on N2O and CO2 emissions from soil. In particular, N2O and CO2 emissions from monoculture cropping of corn, soybean and winter wheat were compared with 2 -yr and 3-yr crop rotations (corn-soybean or corn-soybean-winter wheat). Each phase of the rotation was measured each year. Averaged over three growing seasons (from April to October), annual N2O emissions were about 3.1 to 5.1 times greater in monoculture corn (2.62 kg N ha-1) compared with either monoculture soybean (0.84 kg N ha-1) or monoculture winter wheat (0.51 kg N ha-1). This was due in part to the higher inorganic N levels in the soil resulting from the higher N application rate with corn (170 kg N ha-1) than winter wheat (83 kg N ha-1) or soybean (no N applied). Further, the previous crop also influenced the extent of N2O emissions in the current crop year. When corn followed corn, the average N2O emissions (2.62 kg N ha-1) were about twice as high as when corn followed soybean (1.34 kg N ha-1) and about 60% greater than when corn followed winter wheat (1.64 kg N ha-1). Monoculture winter wheat had about 45% greater CO2 emissions than monoculture corn or 51% greater emissions than monoculture soybean. In the corn phase, CO2 emissions were greater when the previous crop was winter wheat (5.03 t C ha-1) than when it was soybean (4.20 t C ha-1) or corn (3.91 t C ha-1). Hence, N2O and CO2 emissions from agricultural fields are influenced by both the current crop and the previous crop, and this should be accounted for in both estimates and forecasts of the emissions of these important greenhouse gases. Key words: Denitrification, soil respiration, rotation, crop residue

Balancing the competing needs of climate change, biodiversity and rural communities

2009 ◽  
Vol 2009 ◽  
pp. 249-249
Author(s):  
H Prosser
Keyword(s):  
Climate Change ◽  
Carbon Dioxide ◽  
Land Use ◽  
Nitrous Oxide ◽  
Anaerobic Digestion ◽  
Rural Communities ◽  
Carbon Dioxide Emissions ◽  
Energy Use ◽  
New Technology ◽  
The Uk

The work of the UK Climate Change Commission (UKCCC) in recommending targets and options for reducing emissions of greenhouse gases is focusing attention on what agriculture and land use can contribute to deliver these targets. Although overall the major issue is the reduction of carbon dioxide emissions from energy use, agriculture and land use are significant emitters of methane and nitrous oxide. UKCCC has identified three main routes by which emissions can be reduced• Lifestyle change with less reliance on carbon intensive produce -eg switching from sheep, and beef to pig, poultry and vegetables.• Changing farm practices – eg to improve use of fertilisers and manures• Using new technology on farms – eg modifying rumen processes, anaerobic digestion.

scholarly journals Nitrous oxide and carbon dioxide emissions from surface and subsurface drip irrigated tomato fields

2018 ◽  
Vol 98 (3) ◽  
pp. 389-398 ◽  
Author(s):  
K.P. Edwards ◽  
C.A. Madramootoo ◽  
J.K. Whalen ◽  
V.I. Adamchuk ◽  
A.S. Mat Su ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Nitrous Oxide ◽  
Drip Irrigation ◽  
Carbon Dioxide Emissions ◽  
Subsurface Drip Irrigation ◽  
Southern Ontario ◽  
Irrigation Methods ◽  
Significant Difference ◽  
Subsurface Drip ◽  
Irrigation Practices

Irrigation practices change the soil moisture in agricultural fields and influence emissions of greenhouse gases (GHG). A 2 yr field study was conducted to assess carbon dioxide (CO2) and nitrous oxide (N2O) emissions from surface and subsurface drip irrigated tomato (Solanum lycopersicum L.) fields on a loamy sand in southern Ontario. Surface and subsurface drip irrigation are common irrigation practices used by tomato growers in southern Ontario. The N2O fluxes were generally ≤50 μg N2O-N m−2 h−1, with mean cumulative emissions ranging between 352 ± 83 and 486 ± 138 mg N2O-N m−2. No significant difference in N2O emissions between the two drip irrigation practices was found in either study year. Mean CO2 fluxes ranged from 22 to 160 mg CO2-C m2 h−1 with cumulative fluxes between 188 ± 42 and 306 ± 31 g CO2-C m−2. Seasonal CO2 emissions from surface drip irrigation were significantly greater than subsurface drip irrigation in both years, likely attributed to sampling time temperature differences. We conclude that these irrigation methods did not have a direct effect on the GHG emissions from tomato fields in this study. Therefore, both irrigation methods are expected to have similar environmental impacts and are recommended to growers.

Nitrous Oxide and Carbon Dioxide Emissions from Aerobic and Anaerobic Incubations: Effect of Core Length

2013 ◽  
Vol 77 (3) ◽  
pp. 817-829 ◽  
Author(s):  
Xiaobin Guo ◽  
Craig F. Drury ◽  
W. Daniel Reynolds ◽  
Xueming Yang ◽  
Ruqin Fan
Keyword(s):  
Carbon Dioxide ◽  
Nitrous Oxide ◽  
Carbon Dioxide Emissions ◽  
Core Length ◽  
Aerobic And Anaerobic

Feedstock particle size and pyrolysis temperature regulate effects of biochar on soil nitrous oxide and carbon dioxide emissions

2021 ◽  
Vol 120 ◽  
pp. 33-40
Author(s):  
Bangliang Deng ◽  
Xi Yuan ◽  
Evan Siemann ◽  
Shuli Wang ◽  
Haifu Fang ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Particle Size ◽  
Nitrous Oxide ◽  
Carbon Dioxide Emissions ◽  
Pyrolysis Temperature

scholarly journals Impact of future nitrous oxide and carbon dioxide emissions on the stratospheric ozone layer

2015 ◽  
Vol 10 (3) ◽  
pp. 034011 ◽  
Author(s):  
Richard S Stolarski ◽  
Anne R Douglass ◽  
Luke D Oman ◽  
Darryn W Waugh
Keyword(s):  
Carbon Dioxide ◽  
Nitrous Oxide ◽  
Carbon Dioxide Emissions ◽  
Stratospheric Ozone ◽  
Ozone Layer ◽  
Stratospheric Ozone Layer

The Impact of Air Transportation on Carbon Dioxide, Methane, and Nitrous Oxide Emissions in Pakistan: Evidence from ARDL Modelling Approach

2018 ◽  
Vol 3 (6) ◽  
pp. 7-32 ◽  
Author(s):  
Syeda Anam Hassan ◽  
Misbah Nosheen
Keyword(s):  
Carbon Dioxide ◽  
Nitrous Oxide ◽  
Carbon Dioxide Emissions ◽  
Air Transportation ◽  
Methane Emissions ◽  
Nitrous Oxide Emissions ◽  
Positive Relation ◽  
Long Run ◽  
The Impact ◽  
Bound Test

No one can deny the progression and innovation in the aviation transportation collected at national and international level. But the accountancy of the impact of air transportation on environmental degradation is naive and emerging trend of the current era. The air transportation versus environment is the key contribution to the literature that is solely conducted for Pakistan first time in this context. The objective of this research is to compute the impact of air transportation on carbon dioxide emissions, nitrous emissions and methane emissions separately in the three models by applying ARDL bound test approach during 1990 to 2017. The result depicts significant and positive relation of air transportation (carriage) to carbon dioxide emissions (0.77), nitrous emissions (0.20) and methane emissions (0.38) in long-run. The short-run results infer that the air transportation (passenger) has significantly positive relation to carbon dioxide emissions (0.278), nitrous emissions (0.207), and methane emissions (0.080). The econometric outcomes show the significant and direct relation to transportation (both passenger and cargo) to carbon dioxide, methane, and nitrous oxide emissions in short and long-run. Moreover, per capita GDP, population density, and energy demand also significantly affect the environment showing significant and positive coefficients to all three categories (carbon dioxide, methane, and nitrous oxide) of emission. In case of Pakistan, FDI and trade for this duration didn’t significantly contribute to the CO2, NO2, and methane emissions. Since the last decade the economic issues of Pakistan like terrorism, political instability, energy crises, and poor management along with the worst performance by tertiary sectors have severely hit the economy, and as a result, the FDI and trade sector has tormented in a substantial proportion. Finally, pairwise Granger causation also supports the short and long-run consequences. The outcomes suggested that the fuel-efficient energy use and technological diversification in the transportation sector are essential to mitigate the degrading environmental emissions.

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