scholarly journals Dissolved nitrous oxide (N2 O) dynamics in agricultural field drains and headwater streams in an intensive arable catchment

2017 ◽  
Vol 31 (6) ◽  
pp. 1371-1381 ◽  
Author(s):  
Zanist Q. Hama-Aziz ◽  
Kevin M. Hiscock ◽  
Richard J. Cooper
Keyword(s):  
Nitrous Oxide ◽  
Headwater Streams ◽  
Agricultural Field

Annual Variability in Nitrous Oxide Emission from Agricultural Field Soils

2017 ◽  
Vol 8 (4) ◽  
pp. 305-312 ◽  
Author(s):  
Junge Hyun ◽  
Sin Yee Yoo ◽  
Xing Ya Yang ◽  
Jong Eun Lee ◽  
Gayoung Yoo
Keyword(s):  
Nitrous Oxide ◽  
Nitrous Oxide Emission ◽  
Agricultural Field ◽  
Annual Variability ◽  
Field Soils

scholarly journals Spatial Variability of Nitrous Oxide Emissions and Their Soil-Related Determining Factors in an Agricultural Field

2003 ◽  
Vol 32 (6) ◽  
pp. 1965-1977 ◽  
Author(s):  
Junta Yanai ◽  
Takuji Sawamoto ◽  
Taku Oe ◽  
Kanako Kusa ◽  
Keisuke Yamakawa ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Spatial Variability ◽  
Nitrous Oxide Emissions ◽  
Agricultural Field ◽  
Determining Factors

Nitrous oxide emission from an agricultural field: Comparison between measurements by flux chamber and micrometerological techniques

1996 ◽  
Vol 30 (24) ◽  
pp. 4183-4190 ◽  
Author(s):  
S. Christensen ◽  
P. Ambus ◽  
J.R.M. Arah ◽  
H. Clayton ◽  
B. Galle ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Nitrous Oxide Emission ◽  
Agricultural Field ◽  
Flux Chamber

Nitrate removal with low N2O emission by application of sulfur denitrification in actual agricultural field

2004 ◽  
Vol 50 (8) ◽  
pp. 145-151 ◽  
Author(s):  
K. Hasegawa ◽  
K. Shimizu ◽  
K. Hanaki
Keyword(s):  
Nitrous Oxide ◽  
Removal Efficiency ◽  
Nitrate Concentration ◽  
Nitrate Removal ◽  
N2o Emission ◽  
Spring Water ◽  
The Other ◽  
Agricultural Field ◽  
Valley Bottom ◽  
Sampling Points

Sulfur denitrification was applied to the agricultural field and the characteristics of the treatment were evaluated from the viewpoints of nitrate removal efficiency and nitrous oxide (N2O) emission. Two actual sites where sulfur denitrification was performed were surveyed. One is a valley bottom field, where groundwater contaminated with nitrate is coming up as spring water. The nitrate concentration in influent was about 45 mgN/L. The other was wastewater from a plastic greenhouse. The nitrate concentration in inflow water was about 200 mgN/L. Nitrate was almost removed by the containers packed with sulfur (S0)- CaCO3 blocks in both sites. Increase of sulfate indicated that nitrate was removed by sulfur denitrification. This was also estimated stoichiometrically from the relationships between the removed nitrate and produced sulfate. The N2O was supersaturated in water at most sampling points and the highest concentration of dissolved N2O reached 900 μgN/L in Saitama in March. It seemed that insufficient nitrate removal caused accumulation of intermediates during denitrification, such as nitrite and N2O, in this month. However, the emission ratio of N2O to the removed nitrate during these processes was kept low, ranging from 0.01 to 0.19%, at both two sites throughout all surveys.

Sign in / Sign up

Export Citation Format

Share Document