No significant difference in N_2O emission, fertilizer-induced N_2O emission factor and CH_4 absorption between anaerobically digested cattle slurry and chemical fertilizer applied timothy (Phleum pratense L.) sward in central Hokkaido, Japan

この論文にアクセスする

この論文をさがす

著者

抄録

Nitrous oxide (N_2O) and methane (CH_4) fluxes from a fertilized timothy (Phleum pratense L.) sward on the northern island of Japan were measured over 2 years using a randomized block design in the field. The objectives of the present study were to obtain annual N_2O and CH_4 emission rates and to elucidate the effect of the applied material (control [no nitrogen], anaerobically digested cattle slurry [ADCS] or chemical fertilizer [CF]) and the application season (autumn or spring) on the annual N_2O emission, fertilizer-induced N_2O emission factor (EF) and the annual CH_4 absorption. Ammonium sulfate was applied to the CF plots at the same application rate of NH_4-N to the ADCS plots. A three-way ANOVA was used to examine the significance of the factors (the applied material, the application season and the year). The ANOVA for the annual N_2O emission rates showed a significant effect with regard to the applied material (P = 0.042). The annual N_2O emission rate from the control plots (0.398 kg N_2O-N ha^<−1> year^<−1>) was significantly lower than that from the ADCS plots (0.708 kg N_2O-N ha^<−1> year^<−1>) and the CF plots (0.636 kg N_2O-N ha^<−1> year^<−1>). There was no significant difference in the annual N_2O emission rate between the ADCS and CF plots. The ANOVA for the EFs showed insignificance of all factors (P > 0.05). The total mean ± standard error of the EFs (fertilizer-induced N_2O-N emission/total applied N) was 0.0024 ± 0.0007 (kg N_2O-N [kg N]^<−1>), which is similar to the reported EF (0.0032 ± 0.0013) for well-drained uplands in Japan. The CH_4 absorption rates differed significantly between years (P = 0.014). The CH_4 absorption rate in the first year (3.28 kg CH_4 ha^<−1> year^<−1>) was higher than that in the second year (2.31 kg CH_4 ha^<−1> year^<−1>), probably as a result of lower precipitation in the first year. In conclusion, under the same application rate of NH_4-N, differences in the applied materials (ADCS or CF) and the application season (autumn or spring) led to no significant differences in N_2O emission, fertilizer-induced N_2O EF and CH_4 absorption.

Nitrous oxide (N_2O) and methane (CH_4) fluxes from a fertilized timothy (Phleum pratense L.) sward on the northern island of Japan were measured over 2 years using a randomized block design in the field. The objectives of the present study were to obtain annual N_2O and CH_4 emission rates and to elucidate the effect of the applied material (control [no nitrogen], anaerobically digested cattle slurry [ADCS] or chemical fertilizer [CF]) and the application season (autumn or spring) on the annual N_2O emission, fertilizer-induced N_2O emission factor (EF) and the annual CH_4 absorption. Ammonium sulfate was applied to the CF plots at the same application rate of NH_4-N to the ADCS plots. A three-way ANOVA was used to examine the significance of the factors (the applied material, the application season and the year). The ANOVA for the annual N_2O emission rates showed a significant effect with regard to the applied material (P=0.042). The annual N_2O emission rate from the control plots (0.398kg N_2O-N ha^<-1> year^<-1>) was significantly lower than that from the ADCS plots (0.708kg N_2O-N ha^<-1> year^<-1>) and the CF plots (0.636kg N_2O-N ha^<-1> year^<-1>). There was no significant difference in the annual N_2O emission rate between the ADCS and CF plots. The ANOVA for the EFs showed insignificance of all factors (P>0.05). The total mean±standard error of the EFs (fertilizer-induced N_2O-N emission/total applied N) was 0.0024±0.0007 (kg N_2O-N [kg N]^<-1>), which is similar to the reported EF (0.0032±0.0013) for well-drained uplands in Japan. The CH_4 absorption rates differed significantly between years (P=0.014). The CH_4 absorption rate in the first year (3.28kg CH_4 ha^<-1> year^<-1>) was higher than that in the second year (2.31kg CH_4 ha^<-1> year^<-1>), probably as a result of lower precipitation in the first year. In conclusion, under the same application rate of NH_4-N, differences in the applied materials (ADCS or CF) and the application season (autumn or spring) led to no significant differences in N_2O emission, fertilizer-induced N_2O EF and CH_4 absorption.

収録刊行物

  • Soil science and plant nutrition

    Soil science and plant nutrition 56(3), 492-502, 2010-06-01

    一般社団法人日本土壌肥料学会

参考文献:  32件中 1-32件 を表示

被引用文献:  1件中 1-1件 を表示

各種コード

  • NII論文ID(NAID)
    110008144347
  • NII書誌ID(NCID)
    AA00844314
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    00380768
  • NDL 記事登録ID
    10772818
  • NDL 請求記号
    Z53-G349
  • DOI
    10.1111/j.1747-0765.2010.00465.x
  • データ提供元
    CJP書誌  CJP引用  NDL  NII-ELS  IR 
ページトップへ