Effects of elevated CO2 and N fertilization on CH4 emissions from paddy rice fields

The authors employed free‐air carbon dioxide enrichment facilities for investigating the effects of elevating the present atmospheric CO2 by 200 μmol mol−1 and increasing the application rate of urea‐based fertilizers from 150 to 250 kg N ha−1 on CH4 emissions from paddy rice fields in southeastern China. The elevated CO2 significantly stimulated methane emission, which was mainly due to the stimulation in rice growth. Intensifying N fertilization mitigated the CH4 emission under the ambient CO2 but stimulated the CH4 emission under the elevated CO2. This suggests that N fertilization has a potential to stimulate both CH4 production and CH4 oxidation. Thus the net effect of N fertilization on CH4 emission from paddy rice fields most likely depends upon the counterbalance between the nitrogen‐induced increases in CH4 production and CH4 oxidation, as a N excess may result in the inhibition of methane emission, whereas a N limitation may result in the stimulation of methane emission.

[1]  W. Cheng,et al.  Effects of free‐air CO2 enrichment (FACE) on CH4 emission from a rice paddy field , 2003 .

[2]  Wang Yue-si,et al.  Quick measurement of CH4, CO2 and N2O emissions from a short-plant ecosystem , 2003 .

[3]  D. C. Uprety,et al.  Responses of Rice Cultivars to the Elevated CO2 , 2003, Biologia Plantarum.

[4]  P. V. van Bodegom,et al.  Quantification of methane oxidation in the rice rhizosphere using 13C-labelled methane , 2003 .

[5]  Masumi Okada,et al.  Seasonal changes in the effects of elevated CO2 on rice at three levels of nitrogen supply: a free air CO2 enrichment (FACE) experiment , 2003 .

[6]  M. Krüger,et al.  Effects of N‐fertilisation on CH4 oxidation and production, and consequences for CH4 emissions from microcosms and rice fields , 2003 .

[7]  J. Patrick Megonigal,et al.  Elevated CO2 and water depth regulation of methane emissions: Comparison of woody and non-woody wetland plant species , 2003 .

[8]  R. Conrad.  Control of microbial methane production in wetland rice fields , 2002, Nutrient Cycling in Agroecosystems.

[9]  Mingxing Wang,et al.  CH4 emission and oxidation in Chinese rice paddies , 2002, Nutrient Cycling in Agroecosystems.

[10]  Gang Liu,et al.  [Rice-wheat rotational FACE platform. II. Data processing software package]. , 2002, Ying yong sheng tai xue bao = The journal of applied ecology.

[11]  R. B. Jackson,et al.  Root production and demography in a california annual grassland under elevated atmospheric carbon dioxide , 2002 .

[12]  P. Boeckx,et al.  Nitrous oxide and methane emissions during rice growth and through rice plants: effect of dicyandiamide and hydroquinone , 2002, Biology and Fertility of Soils.

[13]  P. Martikainen,et al.  Effect of experimental nitrogen load on methane and nitrous oxide fluxes on ombrotrophic boreal peatland , 2002, Plant and Soil.

[14]  K. Gao,et al.  Daily production and photosynthetic characteristics of Nostoc flagelliforme grown under ambient and elevated CO2 conditions , 2002, Journal of Applied Phycology.

[15]  Reiner Wassmann,et al.  Impact of root exudates of different cultivars and plant development stages of rice (Oryza sativa L.) on methane production in a paddy soil , 2001, Plant and Soil.

[16]  M. Lieffering,et al.  Free-air CO2 enrichment (FACE) using pure CO2 injection: system description , 2001 .

[17]  Kazuyuki Yagi,et al.  Rice carbon balance under elevated CO2 , 2001 .

[18]  S. C. Lahiri,et al.  Methane emission from rice paddy soils, aerotolerance of methanogens and global thermal warming , 2000 .

[19]  J. Coleman,et al.  Elevated CO2 increases productivity and invasive species success in an arid ecosystem , 2000, Nature.

[20]  W. Cheng,et al.  Effects of Elevated CO2 and Temperature on Methane Production and Emission from Submerged Soil Microcosm , 2000, Nutrient Cycling in Agroecosystems.

[21]  B. Duan,et al.  Methane Emissions and Mitigation Options in Irrigated Rice Fields in Southeast China , 2000, Nutrient Cycling in Agroecosystems.

[22]  T. Adhya,et al.  Influence of heavy metals on methane oxidation in tropical rice soils. , 2000, Ecotoxicology and environmental safety.

[23]  K. Yagi,et al.  Importance of physical plant properties on methane transport through several rice cultivars , 2000, Plant and Soil.

[24]  R. Wassmann,et al.  The role of rice plants in regulating mechanisms of methane missions , 2000, Biology and Fertility of Soils.

[25]  P. Bodelier,et al.  Stimulation by ammonium-based fertilizers of methane oxidation in soil around rice roots , 2000, Nature.

[26]  J. Schimel.  Global change: Rice, microbes and methane , 2000, Nature.

[27]  T. Adhya,et al.  Influence of fertilizer management and water regime on methane emission from rice fields , 1999 .

[28]  J. Singh,et al.  Methane flux from irrigated rice fields in relation to crop growth and N-fertilization , 1999 .

[29]  J. Baker,et al.  Effect of CO2 enrichment and elevated temperature on methane emissions from rice, Oryza sativa , 1999 .

[30]  Finzi,et al.  Net primary production of a forest ecosystem with experimental CO2 enrichment , 1999, Science.

[31]  B. Wang,et al.  Methane production in a flooded soil in response to elevated atmospheric carbon dioxide concentrations , 1999, Biology and Fertility of Soils.

[32]  S. Saarnio,et al.  Effects of increased CO2 and N on CH4 efflux from a boreal mire: a growth chamber experiment , 1999, Oecologia.

[33]  R. Conrad,et al.  Effect of rice plants on methane production and rhizospheric metabolism in paddy soil , 1999 .

[34]  H. Neue,et al.  Factors controlling diel patterns of methane emission via rice , 1999, Nutrient Cycling in Agroecosystems.

[35]  M. Agrawal,et al.  Growth and yield responses of wheat plants to elevated levels of CO2 and SO2, singly and in combination , 1999 .

[36]  B. Hütsch.  Methane oxidation in arable soil as inhibited by ammonium, nitrite, and organic manure with respect to soil pH , 1998, Biology and Fertility of Soils.

[37]  R. A. Rasmussen,et al.  Factors affecting methane emissions from rice fields , 1998 .

[38]  J. Heyer,et al.  Comparison of manual and automatic methods for measurement of methane emission from rice paddy fields , 1998 .

[39]  Dale W. Johnson,et al.  Elevated CO2, rhizosphere processes, and soil organic matter decomposition , 1998, Plant and Soil.

[40]  Reinoud Segers,et al.  Methane production and methane consumption: a review of processes underlying wetland methane fluxes , 1998 .

[41]  E. Chang,et al.  Effect of fertilizer application on methane emission/production in the paddy soils of Taiwan , 1997, Biology and Fertility of Soils.

[42]  Xiaoyuan Yan,et al.  Methane and nitrous oxide emissions from rice paddy fields , 2002 .

[43]  K. Butterbach‐Bahl,et al.  Impact of gas transport through rice cultivars on methane emission from rice paddy fields , 1997 .

[44]  R. B. Jackson,et al.  The fate of carbon in grasslands under carbon dioxide enrichment , 1997, Nature.

[45]  M. Kimura,et al.  Methane emission fluxes from rice paddies and the methane productive potential in the soils , 1997, Nutrient Cycling in Agroecosystems.

[46]  H. Neue,et al.  Factors and processes controlling methane emissions from rice fields , 1997, Nutrient Cycling in Agroecosystems.

[47]  I. Nouchi,et al.  The dependence of methane transport in rice plants on the root zone temperature , 1997, Plant and Soil.

[48]  W. Schlesinger,et al.  Enhanced CH4 emission from a wetland soil exposed to Elevated CO2 , 1997 .

[49]  Z. Wang,et al.  Nitrous oxide and methane transport through rice plants , 1997, Biology and Fertility of Soils.

[50]  I. Watanabe,et al.  Methane-oxidizing activities and methanotrophic populations associated with wetland rice plants , 1997, Biology and Fertility of Soils.

[51]  R. Sass,et al.  Methane emissions from rice paddies: a process study summary , 1997, Nutrient Cycling in Agroecosystems.

[52]  E. Wada,et al.  Photosynthates as dominant source of CH4 and CO2 in soil water and CH4 emitted to the atmosphere from paddy fields , 1996 .

[53]  M. Press,et al.  Elevated concentrations of CO2 may double methane emissions from mires , 1995 .

[54]  D. Powlson,et al.  Methane oxidation in soil as affected by land use, soil pH and N fertilization☆ , 1994 .

[55]  P. Martikainen,et al.  Temperature and N fertilization effects on methane oxidation in a drained peatland soil , 1994 .

[56]  B. Drake,et al.  Stimulation of methane emission by carbon dioxide enrichment of marsh vegetation , 1994, Nature.

[57]  K. Bronson,et al.  Suppression of methane oxidation in aerobic soil by nitrogen fertilizers, nitrification inhibitors, and urease inhibitors , 1994, Biology and Fertility of Soils.

[58]  J. Chanton,et al.  Primary production control of methane emission from wetlands , 1993, Nature.

[59]  H. Neue.  Methane emission from rice fields , 1993 .

[60]  G. King,et al.  Methane Consumption in Temperate and Subarctic Forest Soils: Rates, Vertical Zonation, and Responses to Water and Nitrogen , 1993, Applied and environmental microbiology.

[61]  S. Mariko,et al.  Mechanism of Methane Transport from the Rhizosphere to the Atmosphere through Rice Plants. , 1990, Plant physiology.

[62]  J. Aber,et al.  Influence of nitrogen fertilization on methane uptake in temperate forest soils , 1989, Nature.

[63]  R. Knowles,et al.  Physiology, biochemistry, and specific inhibitors of CH4, NH4+, and CO oxidation by methanotrophs and nitrifiers , 1989, Microbiological reviews.

[64]  R. Cicerone,et al.  Biogeochemical aspects of atmospheric methane , 1988 .

[65]  Ralph J. Cicerone,et al.  Sources of atmospheric methane: Measurements in rice paddies and a discussion , 1981 .

[66]  P. Ineson,et al.  Soil gas fluxes of N2O, CH4 and CO2 beneath Lolium perenne under elevated CO2: The Swiss free air carbon dioxide enrichment experiment , 2004, Plant and Soil.

[67]  S. Mitra,et al.  Properties of rice soils affecting methane production potentials: 2. Differences in topsoil and subsoil , 2004, Nutrient Cycling in Agroecosystems.

[68]  W. H. Patrick,et al.  Characteristics of methane oxidation in a flooded rice soil profile , 2004, Nutrient Cycling in Agroecosystems.

[69]  Shan Huang,et al.  Methane emission from fields with differences in nitrogen fertilizers and rice varieties in Taiwan paddy soils. , 2003, Chemosphere.

[70]  R. Conrad,et al.  Effect of a late season urea fertilization on methane emission from a rice field in Italy , 2001 .

[71]  S. Schneider,et al.  Climate Change 2001: Synthesis Report: A contribution of Working Groups I, II, and III to the Third Assessment Report of the Intergovernmental Panel on Climate Change , 2001 .

[72]  Wang Da,et al.  EFFECTS OF CO_2 ENRICHMENT ON CH_4 EMISSION FROM RICE PADDIES , 1999 .

[73]  YA T.B.MO.  Long-term growth at elevated carbon dioxide stimulates methane emission in tropical paddy rice , 1998 .

[74]  P. Pinter,et al.  Comparisons of Responses of Vegetation to Elevated Carbon Dioxide in Free‐Air and Open‐Top Chamber Facilities , 1997 .

[75]  P. Boeckx,et al.  Methane Oxidation in a Neutral Landfill Cover Soil: Influence of Moisture Content, Temperature, and Nitrogen-Turnover , 1996 .

[76]  Xu Hua,et al.  Estimate of methane emission from rice paddy fields in Taihu region,China , 1994 .