scholarly journals Spatial Variability of Litter Gaseous Flux within a Commercial Broiler House: Ammonia, Nitrous Oxide, Carbon Dioxide, and Methane

2006 ◽  
Vol 85 (2) ◽  
pp. 167-172 ◽  
Author(s):  
D.M. Miles ◽  
P.R. Owens ◽  
D.E. Rowe
Keyword(s):  
Carbon Dioxide ◽  
Nitrous Oxide ◽  
Spatial Variability ◽  
Commercial Broiler ◽  
Broiler House

scholarly journals Spatial variability of enthalpy in broiler house during the heating phase

2016 ◽  
Vol 20 (6) ◽  
pp. 570-575 ◽  
Author(s):  
Patrícia F. P. Ferraz ◽  
Tadayuki Yanagi Junior ◽  
Gabriel A. e S. Ferraz ◽  
Leonardo Schiassi ◽  
Alessandro T. Campos
Keyword(s):  
Spatial Variability ◽  
Thermal Environment ◽  
Great Influence ◽  
Heating System ◽  
Economic Losses ◽  
Thermal Discomfort ◽  
Heating Phase ◽  
Commercial Broiler ◽  
Geostatistical Techniques ◽  
Broiler House

ABSTRACT The thermal environment inside a broiler house has a great influence on animal welfare and productivity during the production phase. Enthalpy is a thermodynamic property that has been proposed to evaluate the internal broiler house environment, for being an indicator of the amount of energy contained in a mixture of water vapor and dry air. Therefore, this study aimed to characterize the spatial variability of enthalpy in a broiler house during the heating phase using geostatistics. The experiment was conducted in the spring season, in a commercial broiler house with heating system consisting of two furnaces that heat the air indirectly, in the first 14 days of the birds' life. It was possible to characterize enthalpy variability using geostatistical techniques, which allowed observing the spatial dependence through kriging maps. The analyses of the maps allowed observing problems in the heating system in regions inside the broiler house, which may cause a thermal discomfort to the animals besides productive and economic losses.

Ammonia and Nitrous Oxide Emissions from a Commercial Broiler House

2014 ◽  
Vol 43 (4) ◽  
pp. 1119-1124 ◽  
Author(s):  
D. M. Miles ◽  
P. A. Moore ◽  
R. T. Burns ◽  
J. P. Brooks
Keyword(s):  
Nitrous Oxide ◽  
Nitrous Oxide Emissions ◽  
Commercial Broiler ◽  
Broiler House

Ammonia, Nitrous Oxide, Carbon Dioxide and Methane Emissions from Commercial Broiler Houses in Mediterranean Portugal

2018 ◽  
Vol 229 (12) ◽  
Author(s):  
José L. S. Pereira ◽  
Sílvia Ferreira ◽  
Victor Pinheiro ◽  
Henrique Trindade
Keyword(s):  
Carbon Dioxide ◽  
Nitrous Oxide ◽  
Methane Emissions ◽  
Commercial Broiler

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

Tidal rewetting in salt marshes triggers pulses of nitrous oxide emissions but slows carbon dioxide emission

2021 ◽  
Vol 156 ◽  
pp. 108197
Author(s):  
Hollie E. Emery ◽  
John H. Angell ◽  
Akaash Tawade ◽  
Robinson W. Fulweiler
Keyword(s):  
Carbon Dioxide ◽  
Nitrous Oxide ◽  
Salt Marshes ◽  
Carbon Dioxide Emission ◽  
Nitrous Oxide Emissions

scholarly journals Greenhouse gas emissions from the water–air interface of a grassland river: a case study of the Xilin River

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Xue Hao ◽  
Yu Ruihong ◽  
Zhang Zhuangzhuang ◽  
Qi Zhen ◽  
Lu Xixi ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Land Use ◽  
Nitrous Oxide ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Ghg Emissions ◽  
Nitrous Oxide Emissions ◽  
Gas Emissions ◽  
Sand Land ◽  
Very High

AbstractGreenhouse gas (GHG) emissions from rivers and lakes have been shown to significantly contribute to global carbon and nitrogen cycling. In spatiotemporal-variable and human-impacted rivers in the grassland region, simultaneous carbon dioxide, methane and nitrous oxide emissions and their relationships under the different land use types are poorly documented. This research estimated greenhouse gas (CO2, CH4, N2O) emissions in the Xilin River of Inner Mongolia of China using direct measurements from 18 field campaigns under seven land use type (such as swamp, sand land, grassland, pond, reservoir, lake, waste water) conducted in 2018. The results showed that CO2 emissions were higher in June and August, mainly affected by pH and DO. Emissions of CH4 and N2O were higher in October, which were influenced by TN and TP. According to global warming potential, CO2 emissions accounted for 63.35% of the three GHG emissions, and CH4 and N2O emissions accounted for 35.98% and 0.66% in the Xilin river, respectively. Under the influence of different degrees of human-impact, the amount of CO2 emissions in the sand land type was very high, however, CH4 emissions and N2O emissions were very high in the artificial pond and the wastewater, respectively. For natural river, the greenhouse gas emissions from the reservoir and sand land were both low. The Xilin river was observed to be a source of carbon dioxide and methane, and the lake was a sink for nitrous oxide.

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

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