研究者情報 (国立研究開発法人農業環境技術研究所)
2015年4月現在
氏名
八木 一行 (やぎ かずゆき) YAGI, Kazuyuki
所属・職名
研究コーディネータ
現在の研究内容
- 農業生態系における温室効果ガスの動態解明とその制御技術の開発
- 土壌生態系と生物地球化学的な炭素・窒素循環とのリンク
- モンスーンアジア域における農業と環境に関する国際研究ネットワーク形成
最近の業績(2002年以降の主なもの)
(原著論文)
- Cheng, W., Yagi, K., Sakai, H., and Kobayashi, K.: Effects of elevated atmospheric CO2 concentrations on CH4 and N2O emission from rice soil: an experiment in controlled-environment chambers. Biogeochem., 77, 351-373 (2006).
- Chu, H., Hosen, Y., Yagi, K., Okada, K. and Ito, O.: Soil microbial biomass and activities in a Japanese Andisol as affected by controlled release and application depth of urea. Biol. Fertil. Soil., 42(2), 89-96 (2005).
- Nishimura, S., Sawamoto, T., Akiyama, H., Sudo, S., Cheng, W., and Yagi, K.: Continuous, automated nitrous oxide measurements from paddy soils converted to upland crops. Soil Sci. Soc. Am. J., 69(6), 1977-1986, doi:10.2136/sssaj2005.0035 (2005).
- Nishimura, S., Sudo, S., Akiyama, H., Yonemura, S., Yagi, K., and Tsuruta, H.: Development of a system for simultaneous and continuous measurement of carbon dioxide, methane and nitrous oxide fluxes from cropfields based on the automated closed chamber method. Soil Sci. Plant Nutr., 51, 557-564 (2005).
- Cheng, W., Yagi, K., Sakai, H., Xu, H., and Kobayashi, K.: Changes in concentrations and δ13C values of dissolved CH4, CO2, and water-soluble organic carbon in rice paddies under ambient and elevated concentrations of atmospheric CO2. Org. Geochem., 36, 813-823 (2005).
- Cheng, W., Yagi, K., Xu, H., Sakai, H., and Kobayashi, K.: Influence of elevated concentrations of atmospheric CO2 on CH4 and CO2 entrapped in rice-paddy soil. Chem. Geol., 218, 15-24 (2005).
- Yan, X., Yagi, K., Akiyama, H., and Akimoto, H.: Statistical analysis of the major variables controlling methane emission from rice fields. Global Change Biol., 11, 1131-1141, doi: 10.1111/j.1365-2486.2005.00976.x (2005).
- Sawamoto, T., Nakajima, Y., Kasuya, M., Tsuruta, H., and Yagi, K.: Evaluation of emission factors for indirect N2O emission due to nitrogen leaching in agro-ecosystems. Geophys. Res. Let., 32, L03403, doi:10.1029/2004GL021625 (2005).
- Akiyama, H., Yagi, K., and Yan, X.: Direct N2O emissions from rice paddy fields: summary of available data. Global Biogeochem. Cycle, 19, GB1005, doi:10.1029/2004GB002378 (2005)
- Koga, N., Tsuruta, H., Sawamoto, T., Nishimura, S., and, Yagi, K.: N2O emission and CH4 uptake in arable fields managed under conventional and reduced tillage cropping systems in northern Japan. Global Biogeochem. Cycle, 18, GB4025, doi:10.1029/2004GB002260 (2004)
- Li, Z., and Yagi, K.: Rice root-derived carbon input and its effect on decomposition of old soil carbon pool under elevated CO2 . Soil Biol. Biochem. 36, 1967-1973 (2004)
- Nishimura, S., Sawamoto, T., Akiyama, H., Sudo, S., and Yagi, K.: Methane and nitrous oxide emissions from a paddy field with Japanese conventional water management and fertilizer application. Global Biogeochem. Cycles, 18(2), GB2017, doi:10.1029/2003GB002207 (2004)
- Chu, H., Hosen, Y., and Yagi, K.: Nitrogen oxide emissions and soil microbial activities in a Japanese Andisol as affected by N-fertilizer management. Soil Sci. Plant Nutr., 50, 287-292 (2004)
- Cheng, W., Tsuruta, H., Chen, G.X. and Yagi, K.: N2O and NO production in various Chinese agricultural soils by nitrification. Soil Biol. Biochem. 36, 953-963 (2004)
- Zhu, J., Chu, H., Xie, Z., and Yagi, K.: Effects of lanthanum on nitrification and ammonification in three Chinese soils. Nutr. Cycling Agroecosys., 63, 309-314 (2002)
- Yan, X., Hosen, Y., and Yagi, K.: Nitrous oxide and nitric oxide emissions from maize field plots as affected by N fertilizer type and application method. Biol. Fertil. Soil, 34, 297-303 (2001)
- Cheng, W., Inubushi, K., Yagi, K., Sakai, H., and Kobayashi, K.: Effect of elevated carbon dioxide concentration on biological nitrogen fixation, nitrogen mineralization and carbon decomposition in submerged rice soil. Biol. Fertil. Soil, 34, 7-13 (2001)
- Bilek, R.S., Tyler, S.C., Kurihara, M., and Yagi, K.: Investigation of cattle methane production and emission over a 24-hour period using measurements of delta-13C and delta-D of emitted CH4 and rumen water. J. Geophys. Res., 106, 15405-15413 (2001)
(総説)
- Yagi, K. and Minami, K.: Challenges of reducing excess nitrogen in Japanese agroecosystems. Sci. China. Ser. C, 48, Supecial Issue, 928-936 (2005).
- 八木一行: 土壌生態系からの微量ガス発生と大気環境,土壌の物理性, 94, 21-31 (2003)
- Yagi, K.: Mitigation options for methane emissions in rice. Encyclopedia of Soil Science [Marcel Dekker, Inc.], 814-818 (2002)
(著書)
- 続・環境負荷を予測する/波多野隆介・犬伏和之 編,博友社(2005)(「農耕地土壌からの温室効果ガス排出量評価に対する国際的取り組み」,323-342)
- 農業生態系における炭素と窒素の循環/農業環境研究叢書第15号,農業環境技術研究所(2002)(「大気メタンの動態と水田からのメタン発生」, 23-50 )