scholarly journals Characteristics of N2O Emission Factor and Measurements from Gasoline-Powered Passenger Vehicles

2007 ◽  
Vol 16 (2) ◽  
pp. 179-185
Author(s):  
Deug-Soo Kim ◽  
Jeong-Ho Ryu ◽  
Young-Sook Yoo ◽  
Sung-Woon Jung ◽  
Dae-Wook Kim
Keyword(s):  
Emission Factor ◽  
N2o Emission ◽  
Passenger Vehicles ◽  
N2o Emission Factor

Estimating a nitrous oxide emission factor for animal urine from some New Zealand pastoral soils

Soil Research ◽  
2003 ◽  
Vol 41 (3) ◽  
pp. 381 ◽  
Author(s):  
Cecile A. M. de Klein ◽  
Louise Barton ◽  
Robert R. Sherlock ◽  
Zheng Li ◽  
Roger P. Littlejohn
Keyword(s):  
Nitrous Oxide ◽  
New Zealand ◽  
Emission Factor ◽  
N2o Emission ◽  
Emission Factors ◽  
N2o Emissions ◽  
Drainage Class ◽  
Background Levels ◽  
Cow Urine ◽  
N2o Emission Factor

The Intergovernmental Panel on Climate Change methodology estimates that over 50% of total nitrous oxide (N2O) emissions in New Zealand derive from animal excreta-N deposited during grazing. The emission factor for excreta-N as used by this methodology has an important impact on New Zealand's total N2O inventory. The objectives of this study were to refine the N2O emission factor for urine by simultaneously measuring N2O emissions from 5 pastoral soils of different drainage class, in 3 different regions in New Zealand following a single application of urine; plus test various aspects of the soil cover method for determining emission factors. Cow urine and synthetic urine was applied to pastoral soils in autumn 2000 and N2O emissions were measured using closed flux chambers at regular intervals for 4–18 months following application. The N2O emission factors for cow urine estimated for the first 4 months after urine application varied greatly depending on rainfall and soil drainage class, and ranged from 0.3 to 2.5% of the urine-N applied, suggesting that adopting a single emission factor for New Zealand may be inappropriate. The largest emission factor was found in a poorly drained soil, and the lowest emission factor was found in a well-drained stony soil. Ongoing measurements on one of the soils resulted in an increase in emission factors as the N2O emissions had not reached background levels 4 months after urine application. To characterise urine-induced N2O emissions, we recommend measurements continue until N2O emissions from urine-amended soil return to background levels. Furthermore, we recommend using real animal urine rather than synthetic urine in studies when determining the N2O emission factor for urine.

scholarly journals Developing N2O Emission Factor in Red Pepper Fields to Quantify N2O Emission of Agricultural Field

2014 ◽  
Vol 47 (6) ◽  
pp. 598-603
Author(s):  
Gun-Yeob Kim ◽  
Woo-Kyun Park ◽  
Jong-Sik Lee ◽  
Hyun-Cheol Jeong ◽  
Sun-Il Lee ◽  
...  
Keyword(s):  
Emission Factor ◽  
N2o Emission ◽  
Red Pepper ◽  
Agricultural Field ◽  
N2o Emission Factor

scholarly journals Assessment of N2O Emission Factor of Autumn Chinese Cabbage Fields at Three Different Geographical Location in South Korea

2015 ◽  
Vol 48 (3) ◽  
pp. 163-169
Author(s):  
Gun-Yeob Kim ◽  
Woo-Kyun Park ◽  
Hyun-Cheol Jeong ◽  
Sun-il Lee ◽  
Pil-Joo Kim ◽  
...  
Keyword(s):  
South Korea ◽  
Chinese Cabbage ◽  
Emission Factor ◽  
Geographical Location ◽  
N2o Emission ◽  
N2o Emission Factor

The Development of N2O Emission Factor at Killn Type Pyrolysis Melting Facility

2017 ◽  
Vol 8 (3) ◽  
pp. 231-237
Author(s):  
Hyun-Ki Yun ◽  
Dae Kyeom Lee ◽  
Changsang Cho ◽  
Kang Seongmin ◽  
Young joong Yoon ◽  
...  
Keyword(s):  
Emission Factor ◽  
N2o Emission ◽  
N2o Emission Factor

scholarly journals Nitrous oxide emission in response to N application in irrigated sugarcane

2018 ◽  
Vol 22 (11) ◽  
pp. 758-763
Author(s):  
Alzeneide da S. Lopes ◽  
Aderson S. de Andrade Júnior ◽  
Luís H. Bassoi ◽  
Josiane F. Silva ◽  
Edson A. Bastos ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Experimental Design ◽  
Emission Factor ◽  
Fertilizer Application ◽  
N2o Emission ◽  
N2o Emissions ◽  
N Application ◽  
N Dose ◽  
N2o Emission Factor ◽  
Methods Of Application

ABSTRACT The objective of this study was to compare the emissions of nitrous oxide (N2O) resulting from the application of nitrogen (N) and potassium (K) doses in fertigated sugarcane, in comparison to emissions from conventional fertilizer application. The study was conducted in the experimental area of Embrapa Mid-North, Teresina, Piauí state, Brazil, from August 2014 to January 2015. The experimental design was in randomized blocks, analyzed in a (2 x 2) +1 factorial scheme, with four replicates. The treatments consisted of the combination of two doses of N and K2O (60-120 and 120-180 kg ha-1, respectively) and two methods of application (in soil and fertigation), and a control. The use of fertigation reduced the emissions of N2O in sugarcane compared with the crop under conventional fertilization. Increase in N dose from 60 to 120 kg ha-1 applied through fertigation did not affect N2O emissions, while 60 and 120 kg ha-1 applied in the soil led to 40.6 and 50.2% increases in N2O emissions, respectively. The application of 60 and 120 kg ha-1 of N in the soil led to higher N2O emission factor, being 1.39 and 2.08% higher than in the crop fertigated with 60 and 120 kg ha-1 of N, respectively.

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