TY - GEN
T1 - Nitrous oxide flux from long-term fertilized black soils in a snowfall process
AU - Wang, Lianfeng
AU - Han, Zuoqiang
AU - Sun, Xin
AU - Xilin, Zhang
AU - Lianfeng, Wang
AU - Yanjiang, Cai
PY - 2010
Y1 - 2010
N2 - Snowfall is a general natural phenomenon in winterspring alternate season in northeast of China. Snow was melt with the increase of temperature, i.e. freezing-thawing alternations affects soil properties. Static chamber technique was used to monitor nitrous oxide (N2O) flux from black soils in a snowfall process. The fertilization treatments are none (CK), 150 kg N ha -1 (N1), 300 kg N ha-1 (N2) and 150 kg N ha-1 organic manure plus 150 kg N ha-1 chemical nitrogen fertilizer (M1N1). Before snowfall, there is insignificant difference in N2O emission from four treatments. After snowfall, N2O emission from CK, N1, N2 and MINI is 9.56, 9.16, 9.86, 9.91 mg N2O-N m-2 during 55-hour monitoring period, respectively (p<0.05). Snowmelt increase soil moisture content, which significantly stimulated the soil N2O emissions, meanwhile, freezing-thawing alternations influences N2O emission. The findings indicate that effect of snow on N2O emission should be considered separately, i.e. before and after snowfall.
AB - Snowfall is a general natural phenomenon in winterspring alternate season in northeast of China. Snow was melt with the increase of temperature, i.e. freezing-thawing alternations affects soil properties. Static chamber technique was used to monitor nitrous oxide (N2O) flux from black soils in a snowfall process. The fertilization treatments are none (CK), 150 kg N ha -1 (N1), 300 kg N ha-1 (N2) and 150 kg N ha-1 organic manure plus 150 kg N ha-1 chemical nitrogen fertilizer (M1N1). Before snowfall, there is insignificant difference in N2O emission from four treatments. After snowfall, N2O emission from CK, N1, N2 and MINI is 9.56, 9.16, 9.86, 9.91 mg N2O-N m-2 during 55-hour monitoring period, respectively (p<0.05). Snowmelt increase soil moisture content, which significantly stimulated the soil N2O emissions, meanwhile, freezing-thawing alternations influences N2O emission. The findings indicate that effect of snow on N2O emission should be considered separately, i.e. before and after snowfall.
KW - Black soil
KW - Freezing-thawing
KW - NO
KW - Snowfall
UR - http://www.scopus.com/inward/record.url?scp=77956139853&partnerID=8YFLogxK
U2 - 10.1109/ICBBE.2010.5515395
DO - 10.1109/ICBBE.2010.5515395
M3 - Conference contribution
AN - SCOPUS:77956139853
SN - 9781424447138
T3 - 2010 4th International Conference on Bioinformatics and Biomedical Engineering, iCBBE 2010
BT - 2010 4th International Conference on Bioinformatics and Biomedical Engineering, iCBBE 2010
T2 - 4th International Conference on Bioinformatics and Biomedical Engineering, iCBBE 2010
Y2 - 18 June 2010 through 20 June 2010
ER -
